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• Sodium nitroprusside (SNP) individually or combination with gibberellic acid (GA 3) increase vase life of dahlia cut flower. • Postharvest quality of cut flower improves treated with SNP and GA 3 PGRs. • Physiological traits such as solution uptake, fresh weight, anthocyanin content, etc. improves in cut flower by using both PGRs. • Exogenous SNP and GA 3 modulates antioxidant activity (CAT, SOD, POD, MDA) in dahlia cut flower. The goal of the current study was to evaluate the impacts of both sodium nitroprusside (SNP) and gibberellic acid (GA 3) separately and in combination on the longevity of Dahlia cut flowers. Additionally, the potential physiological and biochemical changes associated with these treatments are also examined. Cut flowers treated with nitric oxide donor SNP and GA 3 significantly improved all postharvest characteristics of cut flowers, including vase life and other physiological characteristics, as compared to control. Flowers treated with T 15 (SNP 20 mg L-l + GA 3 20 mg L-l) resulted in maximum vase life, followed by treatment T 3 (SNP 20 mg-l) and minimum vase life recorded in control. Treatment T 15 (SNP 20 mg L-l + GA 3 20 mg L-l) shows an improvement in all biochemical activities, including superoxide dismutase, catalase, and peroxidase activity, except malondialdehyde accumulation, as compared with untreated cut flowers. Thus, SNP alone or along with GA 3 as a pulsing solution could be a promising approach to improving the postharvest quality of dahlia cut flowers by influencing physiological and biochemical modifications. [ABSTRACT FROM AUTHOR]

In the last years, special attention has been given to the nutritional properties of food, and the edible flowers (EFs) represent an uncommon fresh product to characterise, with the aim to explore new species with peculiar aesthetic and the aromatic features. This work investigated some nutritional properties of eight new EFs, such as Begonia boliviensis A.DC. (pink and white varieties), Dahlia pinnata Cav., Salvia farinacea Benth., S. × jamensis J.Compton, S. 'Purple Queen' Tulbaghia simmleri Beauv. 'Alba', T. violacea Harv. 'Alba', chosen for their different colours and corolla morphologies. Primary and secondary metabolites have been determined. The highest protein content was found in T. violacea 'Alba' and D. pinnata. The Salvia species showed the highest soluble sugar content. The two Tulbaghia species were notable for hexose and ascorbic acid content. D. pinnata showed the highest polyphenols, flavonoids and carotenoid content, with the highest antiradical activity. [ABSTRACT FROM AUTHOR]

This research investigated the structural and chemical modifications of Dahlia 'Kennemerland' across different technological conditions and throughout the vegetation period. Using FT-IR imaging, this study focused on the changes in the inulin, lignin, and suberin contents of tuberous roots. FT-IR maps were generated to visualize the distribution of these compounds across scanned areas, highlighting variations across cultivation methods and seasonal stages. The key compounds analyzed included inulin, lignin, and suberin, which were identified in different root zones. The results showed that inulin was distributed in all analyzed areas, predominantly in zone 1 (periderm), with a distribution that increased with forced cultivation, while lignin and suberin distributions varied with zone and season. Forced tuberous root lignin was detected in all four areas analyzed, in the fall accumulating mainly in area 4 and in suberin starting from summer until autumn. Based on the evaluation of the maps obtained by representing the area ratios of specific bands (inulin/lignin and inulin/suberin), we established where the inulin was present in the highest quantity and concluded that suberin was the constituent with the lowest concentration in tuberous Dahlia roots. These findings emphasize the influence of technological factors and seasonal changes on the biochemical makeup of tuberous Dahlia roots. This detailed biochemical mapping provides insights for optimizing Dahlia cultivation and storage for various industrial applications. This study concludes that FT-IR spectroscopy is an effective tool for monitoring and understanding the biochemical dynamics of Dahlia roots, aiding their agricultural and industrial utilization. [ABSTRACT FROM AUTHOR]

This study demonstrated the effects of adding specific proportions of vermiculite (VMT: 0%, 10%, and 20%) and earthworm casts (EWCs: 0%, 10%, and 20%) on the physico-chemical properties of composted green waste (CGW), and the impacts of amended CGW as growth media on the growth of three common ornamental plants (Dahlia pinnata Cav. [dahlia], Centaurea cyanus L. [cornflower], and Consolida ajacis [L.] Schur [delphinium]). Compared with Treatment T1 (CK), the addition of 10% VMT and 20% EWCs greatly (p < 0.05) increased the total porosity, aeration porosity, water-holding porosity, total nitrogen, available phosphorus, available potassium, and organic matter of CGW by 9%, 35%, 4%, 18%, 27%, 13%, and 33%, respectively. In addition, this pattern increased (p < 0.05) the total fresh biomass, total chlorophyll content, and root length of dahlias by 9%, 19%, and 27%, respectively; those of cornflowers by 17%, 30%, and 29%, respectively (p < 0.05); and those of delphiniums by 23%, 14%, and 63%, respectively. Therefore, the amended CGW supplemented with 10% VMT and 20% EWCs was an ideal growth medium for the three plants. [ABSTRACT FROM AUTHOR]

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This research focuses on the socialization of health communication carried out by Posyandu Dahlia Heram District cadres in reducing the number of cases of malnutrition in infants aged 0-9 months. Using descriptive qualitative research and an interpretive paradigm, the author tries to find the strategies used by Posyandu Dahlia cadres when they go to the field to reduce infant mortality. Data sources were obtained through in-depth interviews with seven informants as wel as from valid internet reference sources, books and documentation by the authors in the field directly. This study found that Huge Rank's Health Communication Theory did not apply al of the techniques by Posyandu Dahlia Cadres. Only a few of the downplay and intensive techniques were used by informants if they were suitable for application when socializing or carrying out work program activities from the posyandu. [ABSTRACT FROM AUTHOR]

This essay focuses its attention on Madrid, the Royal Botanical Garden (RBG), and the LatinX presence just as they were all coming into existence in the Spanish and European world. Pursuing a LatinX origin that exceeds humanness, this thought exploration tracks the Mesoamerican dahlia, transplanted to Spain in 1789. Acocoxochitl— what we now know as the dahlia, named after Swedish naturalist Andreas Dahl (1751–1789)—was one of the first plants to arrive at Madrid's RBG when it opened nearly three centuries ago. The flower was tested on, domesticated, and acclimated, making its botanical debut as the dahlia pinnata in 1791. The dahlia is a vector for an unanticipated life form, clueing us in on where the LatinX world-in-process was heading. It offers a glimpse of how the garden and the Latin find themselves arranged and come into being. How LatinX history is blurred—and how LatinX difference has been produced—in Madrid's iconography is disentangled here. The piece weighs in on these considerations: What does it mean to think alongside the dahlia? What might the plant mean to a human whose body has been tampered with; who asymmetrically became one of Carolus Linnaeus's Latin species; who has been "naturally" passed down to different kinds of nature; whose construction is both native and foreign; and who comes into being through a rather unnatural classificatory order? [ABSTRACT FROM AUTHOR]

Objective / Background. Phytophthora capsici is the causal agent of chili wilt. Among the strategies for its control is the use of resistance inducers. Fructans are molecules with interesting biological properties, including the ability to induce resistance mechanisms in some plants. In this work, the protective effect of four concentrations inulin from dahlia tubers on chili infected with P. capsici was evaluated. Materials and Methods. The concentration that showed the highest protection was chosen to evaluate the induction of defense response through the enzymatic activity of β-1,3 glucanases, peroxidases and the production of total phenolic compounds. Results. Inulin showed a protective effect against infection at concentrations of 100 to 300 μM, as symptoms decreased and seedlings showed improved vegetative development. It was observed that inulin at 200 μM concentration was able to induce an effective defense response associated with increased activity of β-1,3 glucanases and peroxidases through a local and systemic response in seedlings. This response was differentiated between seedlings treated with inulin and seedlings infected with P. capsici. Conclusion. It was concluded that inulin has the ability to protect chili bell pepper from P. capsici by induction of resistance. [ABSTRACT FROM AUTHOR]

The genus Dahlia has approximately 40 species; however, the complete chloroplast genome has been reported only for one species. Due to this lack of information on the chloroplast genomes, the phylogenetic relationships within the Dahlia genus remain unclear. Therefore, the present study sequenced the complete chloroplast genome of D. imperialis for the first time. This genome was 152,084 bp long with a typical quadripartite structure and a GC content of 38.45%. A total of 134 genes were annotated in the genome, including 86 protein-coding genes, 38 transfer RNA genes, 8 ribosomal RNA genes, and 2 pseudogenes. The detailed analysis identified UUA as the most frequently used codon and found 62 intergenic repeat sequences and 157 SSR loci in the D. imperialis genome. Phylogenetic analysis based on 49 chloroplast genomes showed that Dahlia was a monophyletic group, with D. imperialis positioned at the base of this clade. Network evolution and gene flow analysis unveiled extensive hybridization events within the Heliantheae alliance, especially in Dahlia. Thus, the comprehensive analysis of the complete chloroplast genome of D. imperialis enriches the information on the genetic resources of the Dahlia species, provides valuable information for reconstructing their phylogeny, and reveals the evolutionary dynamics of the Dahlia chloroplast genome. [ABSTRACT FROM AUTHOR]

This article focuses on the ways in which modern Hebrew poetry uses the demonstrative pronoun 'zeh' (this, that or it): an everyday and efficient word that relies on shared understandings or the illusion of shared understandings between speakers, and in which a long text is often condensed into the act of pointing. The extensive usage of 'zeh', sometimes as the poem's subject or as its main interest, is a poetic phenomenon that needs to be examined and characterized. The article traces various uses of this word in Hebrew poetry, and classifies and examines the insinuation, that is, what is implied, in poems by Rachel Bluwstein, Nathan Zach, Yona Wallach, Mois Benarroch, Dahlia Ravikovitch and Hedva Harechavi. In these poems, the demonstrative - a deixis always implying a context or a frame of reference - is essential and central, and the article shows how the immediate act of pointing in daily language is transformed by the poems for their own purposes. The article contains four sections, each examining a different usage of 'zeh'. The first section examines uses that are existentialist in nature, some of which relate to suspicion and its activation in readers; these uses also tend to function as a shibboleth, splitting readers into those who understand and decipher what is implied and those who don't, the insiders and the outsiders. The other three sections describe uses of the demonstrative 'zeh' that can be interpreted as standing against or in opposition to the former ones; poems that use the insinuations to produce different identifications with alternative groups, signal being "like that" ['ka-zeh']; poems that point at what is implied and naming it, debunking and ridiculing the very act of implying or insinuating; and lastly poems that point out the powerlessness of poetry and language, doing this by an act of pointing that tries to achieve the impossible in the poems, and to allegedly, revive the dead. [ABSTRACT FROM AUTHOR]

Verticillium wilt is a soil-borne vascular disease caused by the fungal pathogen Verticillium dahliae. It causes great harm to upland cotton (Gossypium hirsutum) yield and quality. A previous study has shown that Hen egg white lysozyme (HEWL) exerts strong inhibitory activity against V. dahliae in vitro. In the current study, we introduced the HEWL gene into cotton through the Agrobacterium-mediated transformation, and the exogenous HEWL protein was successfully expressed in cotton. Our study revealed that HEWL was able to significantly inhibit the proliferation of V. dahlia in cotton. Consequently, the overexpression of HEWL effectively improved the resistance to Verticillium wilt in transgenic cotton. In addition, ROS accumulation and NO content increased rapidly after the V. dahliae inoculation of plant leaves overexpressing HEWL. In addition, the expression of the PR genes was significantly up-regulated. Taken together, our results suggest that HEWL significantly improves resistance to Verticillium wilt by inhibiting the growth of pathogenic fungus, triggering ROS burst, and activating PR genes expression in cotton. [ABSTRACT FROM AUTHOR]

Flower cultivation has increased nationwide. Currently, species of the Dahlia genus (known colloquially as Dahlias) are grown for ornamental purposes, with central Mexico having the highest production rate. Due to its importance, we sought to evaluate the effect of three different methods of cultivation (shade net, greenhouse, and open field) on the growth and development of four dahlia varieties in Saltillo, Coahuila, Mexico. The experiment was carried out at the Horticulture Department of the Universidad Autónoma Agraria Antonio Narro. Tuberous roots of four D. pinnata varieties were sown directly into the soil and covered with mulch. The shade netting production environment proved to be the best in production, with the best results in plant height, stem diameter, number of leaves, and days to flowering. The highest-performing cultivar was the Antje variety. On the other hand, the Antje variety (cultivated under shade netting) had the longest flower stalks, the Boy Mick variety (cultivated in the greenhouse) had the heaviest flowers, and the Canby Centennial variety (cultivated in open field) had the flowers with the thickest stalks. The results show that Dahlias can be grown in northeastern Mexico because the area meets suitable conditions for crop development and production. [ABSTRACT FROM AUTHOR]

Dahlia (Dahlia variabilis) is a widely cultivated ornamental and medicinal plant in China. Recently, dahlia plants with symptoms of leaf mottling and distortion were collected in Hohhot, Inner Mongolia, China. The presence of dahlia common mosaic virus (DCMV), an unassigned species in the genus Caulimovirus, was confirmed by high-throughput sequencing. Three fragments of DCMV Inner Mongolia isolate (DCMV-IN) were PCR-amplified with specific primers, sequenced and assembled into the complete genome sequence with a GenBank accession number of OR494328. The double-stranded circular DNA genome of DCMV-IN consists of 7949 bp and contains six open reading frames (ORFs). Sequence analysis showed that DCMV-IN shared high sequence identities with other DCMV isolates available in the GenBank database. Phylogenetic analysis of DCMV isolates and other representative caulimoviruses based on genome sequence clustered four DCMV isolates to a single branch which was closest to dahlia mosaic virus (DMV). No recombination event was detected among the four DCMV isolates. [ABSTRACT FROM AUTHOR]

The high temperature may cause difficult growth or bloom in the summer, which is the key problem limiting the cultivation and application of dahlia. The photosynthetic physiological mechanisms of dahlia under high temperature stress were studied to provide a theoretical basis for expanding the application range of cultivation and annual production. Two dahlia varieties, 'Tampico' and 'Hypnotica Tropical Breeze', were used as test materials and were treated for 1 d or 2 d at temperatures of 35/30 °C or 40/35 °C (day/night: 14 h/10 h) and then recovered at 25/20 °C for 7 d. A 25/20 °C treatment was used as the control. The results are as follows: (1) High-temperature stress resulted in the chlorophyll (Chl) content, Fv/Fm, transpiration rate (Tr), net photosynthetic rate (Pn), and water potential decreasing significantly, and the Chl content, Tr, and stomatal density of 'Tampico' were higher than those of 'Hypnotica Tropical Breeze' during the same period. (2) After the two dahlia varieties were treated with high-temperature stress and recovered at 25/20 °C for 7 d, the plant morphology and various physiological indices under the 35/30 °C treatment gradually returned to normal, with 'Tampico' in better condition than 'Hypnotica Tropical Breeze'. (3) Both dahlia varieties could not withstand the stress of 40/35 °C for 2 days. [ABSTRACT FROM AUTHOR]

Dahlia Ravikovitch's unpublished poems, which have come to light out of her archive, reveal a complementary corpus to the set of works she published during her lifetime. This corpus sends branches to the published poems, but also sheds light on intertextual relationships between Ravikovitch and the Bible, and between Ravikovitch and canonical Hebrew poets such as Rachel Bluwstein and Leah Goldberg. The first part of the article discusses two unpublished poems by Ravikovitch, which refer to the biblical characters Moses and Michal. The poems were written when Ravikovitch was a girl of about seventeen, who decided to highlight two values in the stories of the two characters. As for Moshe, Ravikovitch emphasizes his insistence on continuing to serve as a moral authority for the Israelites, despite their self-imposed ways. Thus she preserves his point of view while reminding him of his stubbornness. As for Michal, Ravikovitch shows solidarity with the one who is left in terrible loneliness, because she did not refrain from criticizing. The second part of the article focuses on Ravikovitch's multifaceted use of Michal's character, not only as she was presented in the Bible, but as she was represented in Rachel Bluwstein's poetry and was perceived as her own mother, who bore this name. The third part of the article deals with three archived poems by Ravikovitch, written in the early fifties, which maintain thematic and formal connections between themselves and between three poems by Leah Goldberg. One of the poems is actually Ravikovitch's first publication as a poet. Ravikovitch converses with Goldberg through her poems, and takes the opposite point of view from her. She presents Goldberg with the dangers of the every-day existence and the dangers of lust. [ABSTRACT FROM AUTHOR]

Plants of the Dahlia genus are particularly valued for their wide variety of shapes and colors both as cultivated plants and as cut flowers thus increasing the interest for the introduction in the culture of cultivars with great decorative value and great resistance as cut flowers. The work presents anatomical aspects, but also particularities regarding the life span of cut flowers in preservation solutions for the cultivars 'Topmix Red', 'Hy Pimento', 'Babylon Red', 'Marble Ball' and 'Thomas Edison'. The objective of this study was to analyze dahlia varieties both from the anatomical point of view and the preservation of cut flowers in vases using different preservation solutions to establish a correlation between the diameter of xylem vessels and cut flower life. The diameter of the xylem vessels does not seem to influence the life span of the cut flowers, regardless of the solution used in the conditions of this experiment. The Quick dip and eZDose conservation solution increased the lifespan of the varieties studied compared to the other conservation solutions used. [ABSTRACT FROM AUTHOR]

Dahlia (Dahlia variabilis) is a tuberous-rooted flower crop, exhibiting rich diversity in flower color and inflorescence form. The study was conducted to quantify diversity in 24 dahlia genotypes based on agronomic traits. The dahlia accessions were grouped based on their similarity for phenotypic resemblance following hierarchal clustering and principal component analysis (PCA). The hierarchical cluster analysis grouped the dahlia accessions into three distinct clusters viz., C1, C2 and C3 comprising 8, 3 and 13 genotypes, respectively. The 24 dahlia genotypes were found scattered across the whole variation observed by PC1 and PC2 (explaining nearly 55.2% of the cumulative total variation). The two-dimensional PCA analysis revealed that the most appropriate traits for grouping the dahlia accessions were plant height, flower weight, stalk length, vase life and number of flowers per plant. The study signifies the importance of germplasm collection, characterization and utilization of dahlia to popularize its commercial cultivation among the flower growers. [ABSTRACT FROM AUTHOR]

Information on dahlias, including their history, cultural requirements, bulb storage and recommended varieties

PGPR (Plant Growth Promoting Rhizobacteria) are used as biofertilizers and biological control agents against fungi. The objective of this work was to evaluate the antagonistic activities of some bacterial strains isolated from soil against four phytopathogenic fungal strains (Fusarium graminearum, F. culmorum, Phytophthora sp. and Verticillium dahlia). Two strains having an antagonist effect on fungi and displaying the maximum of plant growth promoting (PGP) traits were selected for further study and identified as Bacillus subtilis and B. amyloliquefaciens respectively. In planta assays demonstrated that the two Bacillus strains are able to enhance plant growth of two wheat cultivars in absence of nitrogen and protect them against F. culmorum. Pot experiments performed in a greenhouse showed that wheat plants inoculation with two bacterial strains reduce F. culmorum disease severity correlated with the accumulation of phenolic compounds and chlorophyll content. These could partly explain the effectiveness of these bacteria in protecting Tunisian durum wheat cultivars against F. culmorum. Application B. amyloliquefaciens, showed better protection than B. subtilis although the last one enhanced more the plant growth of two wheat cultivars in absence of fungus. Hence, combination of two bacterial strains could be a strategic approach to enhance plant growth and control plant diseases. [ABSTRACT FROM AUTHOR]

Although acid-base titrations can be done using numerous indicators which are either synthetic or semi-synthetic, the investigation was started for natural compounds as the former ones result in polluting the habitat despite their limited availability, complicated method of preparation, and expensiveness. Equivalence point determination is the point of interest in neutralization titrations. With the change in pH, the indicators which are natural, usually end up giving a sharp color change. Plant-derived pigments that are of various shades and tints generally vary in their dyeing nature by altering pH. An indicator is a substance that exhibits the property of interchangeable color of the reaction mixture when reaching the vicinity of point with the change in pH. Acid-base titration indicators are normally weak acids or bases. Hibiscus rosa-sinensis, Ipomoea biloba, Dahlia pinnata, etc. are among the typical neutralization indicators that are extracted from plants. These natural Indicators are easily available and economical. In this review, we are discussing an overview of plant extracts, and natural pH indicators, and their significance in correspondence to analytical chemistry is illustrated. [ABSTRACT FROM AUTHOR]

Simple Summary: One of the important aspects in the relationship between plants and insects is pollination including attraction of pollinators, which is related to mainly optical effects. Since insects pollinating the majority of plants are in contact with a petal surface for a certain time, it is plausible to hypothesize that such petals should also enable or even promote attachment of insects to their surface. The aim of this study was to understand whether the petal surface in "cafeteria"-type flowers, which offer their nectar and pollen to insect pollinators in an open way, is adapted to a stronger attachment of pollinators. We selected the garden dahlia plant Dahlia pinnata and the hovering fly Eristalis tenax, examined leaves, petals, and flower stems using cryo scanning electron microscopy, and performed force measurements of fly attachment to surfaces of these plant organs. Our experimental results showed that insect attachment on the petal surface was significantly weaker compared to that on smooth leaf and smooth reference glass. In our opinion, these "cafeteria"-type flowers have the petals, where the colour intensity is enhanced due to papillate/conical epidermal cells covered by micro- and nanoscopic cuticular folds, and exactly these latter structures mainly contribute to attachment reduction in insect pollinators. In order to understand whether the petal surface in "cafeteria"-type flowers, which offer their nectar and pollen to insect pollinators in an open way, is adapted to a stronger attachment of insect pollinators, we selected the plant Dahlia pinnata and the hovering fly Eristalis tenax, both being generalist species according to their pollinator's spectrum and diet, respectively. We combined cryo scanning electron microscopy examination of leaves, petals, and flower stems with force measurements of fly attachment to surfaces of these plant organs. Our results clearly distinguished two groups among tested surfaces: (1) the smooth leaf and reference smooth glass ensured a rather high attachment force of the fly; (2) the flower stem and petal significantly reduced it. The attachment force reduction on flower stems and petals is caused by different structural effects. In the first case, it is a combination of ridged topography and three-dimensional wax projections, whereas the papillate petal surface is supplemented by cuticular folds. In our opinion, these "cafeteria"-type flowers have the petals, where the colour intensity is enhanced due to papillate epidermal cells covered by cuticular folds at the micro- and nanoscale, and exactly these latter structures mainly contribute to adhesion reduction in generalist insect pollinators. [ABSTRACT FROM AUTHOR]

Transition metal sulfides have become more and more important in the field of energy storage due to their superior chemical and physical properties. Herein, dahlia β-NiS with a rough surface and β-NiS@reduced graphene oxide (rGO) have been green synthesized by a one-step hydrothermal method. The interface characteristics of β-NiS@ rGO composites have been systematically studied by XPS, Raman, and first-principles calculations. It is found that the residual O atoms in the interface and the polarization charge generated by them play an important role in performance enhancement. The NiS@rGO composite material has the best electrochemical performance when the C/O ratio is 6.48. Furthermore, we designed a NiS@rGO//rGO asymmetric supercapacitor with a potential window of 1.7 V. Its excellent energy density and power density demonstrate the advantages of the optimized NiS@rGO electrode. When the power density is 850 W kg−1, the energy density can reach 40.4 W h kg−1. Even at a power density of up to 6800 W kg−1, the energy density can be maintained at 17.6 W h kg−1. These encouraging results provide a possible pathway for designing asymmetric supercapacitors with ultra-high performance and a feasible strategy for the precise control of electrochemical performance. [ABSTRACT FROM AUTHOR]

Mechanisms regulating flower senescence are not fully understood in any species and are particularly complex in composite flowers. Dahlia (Dahlia pinnata Cav.) florets develop sequentially, hence each composite flower head includes florets of different developmental stages as the whole flower head ages. Moreover, the wide range of available cultivars enables assessment of intraspecific variation. Transcriptomes were compared amongst inner (younger) and outer (older) florets of two flower head ages to assess the effect of floret vs. flower head ageing. More gene expression, including ethylene and cytokinin pathway expression changed between inner and outer florets of older flower heads than between inner florets of younger and older flower heads. Additionally, based on Arabidopsis network analysis, different patterns of co-expressed ethylene response genes were elicited. This suggests that changes occur in young inner florets as the whole flower head ages that are different to ageing florets within a flower head. In some species floral senescence is orchestrated by the plant growth regulator ethylene. However, there is both inter and intra-species variation in its importance. There is a lack of conclusive data regarding ethylene sensitivity in dahlia. Speed of senescence progression, effects of ethylene signalling perturbation, and patterns of ethylene biosynthesis gene expression differed across three dahlia cultivars ('Sylvia', 'Karma Prospero' and 'Onesta') suggesting differences in the role of ethylene in their floral senescence, while effects of exogenous cytokinin were less cultivar-specific. [ABSTRACT FROM AUTHOR]

Tabassum Rahman Diego Raimondo Hassan Rajab Carla Ramalho Atziri Ramirez Negrin Doreen Ramogola-Masire Meena Ramphul Salah Rasheed John Repke Carolina Ribeiro do Valle Gaetano Riemma Stephen Robson Augusto Cam Rojas Slawa Rokicki Aimee Rolston Marta Rondon Cristina Rossi Jana Rossouw Irene Ruengkhachorn Francisco Javier Ruiloba Hamid Rushwan B S b Subhash Saha Ahmed Saleh Carolina Sales Vieira Lauren Schiff Anna Seidenari Kok-Min Seow Omar Shaaban Alireza Shamshirsaz Aparna K Sharma Jai Sharma Dorothy Shaw Perry Sheffield Shirish Sheth Stephanie Shiau Hsu Shih-Tien Mitra Shokat Lee Shulman Ing-Luen Shyu Igno Siebert Chanchal Singh Pratibha Singh Abraham Sium Daniel Skupski Tania Slater Leon Snyman Jonathas Soares Ahmed Sobh Dianrong Song Sumire Sorano Claudio Sosa Marc Steben John Steege Philip Steer Kendall Stevenson John Stratton Elizabeth Stringer Gretchen Stuart Kuo-Min Su Murali Subbaiah Nares Sukcharoen Shunji Suzuki Alessandro Svelato B T b Peng Tan Omer Tapisiz Afsaneh Tehranian Julio Teixeira Elcin Telli Marleen Temmerman Masakazu Terauchi Jan Tesarik Pao-Ling Torng Hsiao-Wen Tsai Kuan-Hao Tsui B U b Akaninyene Eseme Bernard Ubom Mustafa Ulubay Sharee Umpierre Ihab Usta B V b Jens Van Praet Amparo Villasante Joshua Vogel B W b Jennifer Walsh Yichun Wang Chin-Jung Wang YC Wang Lin-Hung Wei Adi Weintraub Yi Cheng Wu MH Wu Hsien-Ming Wu B X b Jose Candido Xarvier Jr Rihua Xie B Y b Szu-Ting Yang Elizabeth Yates Enav Yefet Chih-Feng Yen Sang Wook Yi Tevfik Yoldemir Shu-Han You Omar Young Manal Younis B Z b Nicola Zampieri Jun Zhang Yaniv Zipori Marya Zlatnik The Editors of I International Journal of Gynecology & Obstetrics i recognize that the journal's high scientific standards can only be maintained thanks to the continuing dedication of our reviewers. [Extracted from the article]

Objective: in the production of Dahlia spp., only chemical fertilization has been used, and an option that has not yet been explored is the implementation of a microbial inoculant. Therefore, the objective of this study was to evaluate the effect of the mycorrhizal fungus Funneliformis mosseae on the growth and development of the dahlia (Dahlia variabilis var. Variegated dwarf). Design/methodology/approach: the seeds were sown in polyethylene bags containing a mixture of black soil, peat moss, and agrolite. A completely randomized design was used, and the treatment structure was 2-3 factorial. The study factors were F. mosseae, chemical fertilization, and substrate sterilization. Results: an analysis of variance was performed, and the mean values of the treatments were compared with Tukey's test (α=0.05). Conclusions: with the inoculation of F. mosseae, a significant increase was obtained in the study variables: plant height, stem diameter, number of buds and flowers per plant; leaf + stem, flower, root, and total biomass, compared to non-inoculated plants. A colonization of 89% in the roots was recorded. A limitation of the study is that the effect of the inoculum on plant growth can vary according to the mycorrhiza species used. In conclusion, inoculation with Funneliformis mosseae increased growth and biomass accumulation in Dahlia plants. [ABSTRACT FROM AUTHOR]

The present investigation was conducted to determine the effects of different bio-stimulants on vegetative growth parameters, floral and tuber yield parameters, and different holding solutions on vase life of Dahlia. Seaweed extract, Humic acid and Panchgavya were sprayed on plants four times at 15 days, 30 days, 45 days and 60 days, respectively with different concentrations. The harvested flowers were subjected to treat with Sucrose alone and in combination with Salicylic acid (SA), and Ascorbic acid as vase solutions for assessment of vase life of cut flowers. Results indicated that treatment T9 (75% recommended dose of 50% RDF+ 5% seaweed extract + 3% Humic Acid + 3% Panchgavya foliar spray) was the most effective in improving Dahlia growth and flower yield, while treatment T4 (75% RDF + 3% Humic acid foliar spray) was the most effective in improving tuber yield and quality. However, the vase life analysis revealed that salicylic acid 1.0 mM + 4% sucrose treatment showed the best effect on the viz., maximum fresh weight, total solution uptake and vase life of the dahlia cut flowers. [ABSTRACT FROM AUTHOR]

The paper presents the results of the morphological characteristics of Dahlia leaves (leaves area, the perimeter, the length of the leaves, width of leaf), physiological processes (photosynthesis, respiration and transpiration) and chlorophyll content determined at 5 Dahlia cultivars 'Topmix Red', 'Hy Pimento', 'Babylon Red', 'Marble Ball' and 'Thomas Edison'. The average leaf area has varied from 5.35 cm² ('Topmix Red') to 68.41 cm2 ('Babylon Red'). As for the perimeter, 'Babylon Red' had the highest value (67.49 cm) and 'Topmix Red' had the lowest value (9.72 cm). The length of the leaves was between 14.19 cm for 'Babylon Red' and 4.43 cm for 'Topmix Red'. The width of the leaves was between 10,18 cm for 'Babylon Red' variant and 2.26 cm for 'Topmix Red'.The intensity of photosynthesis varied between 12.85 μmol CO2 m-2s-1 for 'Babylon Red' and 15.24 μmol CO2 m-2s-1 for 'Topmix Red', intensity of transpiration 4.69 mmol H2O m-2s-1 for 'Hy Pimento' and 6.17 mmol H2O m-2s-1 for 'Thomas Edison', intensity respiration 7.46 μmol CO2 m-2s-1 for 'Hy Pimento' and 13.43 μmol CO2 m-2s-1 to 'Marble Ball'. The total chlorophyll content was higher in the case of 'Marble Ball', at a value of 163.90 mg/100g, and the smallest quantity was recorded for the 'Babylon Red' at the value of 102.15 mg/100g. [ABSTRACT FROM AUTHOR]