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Three field experiments were carried out during 2022 summer season at three diverse locations of Gemmeiza, Sakha and Mallawy Experimental Stations of Agricultural Research Center (ARC), Egypt. Thirty crosses (ten inbred lines crossed with three testers inbred line Sd. 7, Sk. 5 and SC 130) and four standard checks SC 10, SC 2031, TWC 321 and TWC 324 were evaluated for yield and yield related traits to evaluate using line × tester mating design. Analysis of variance revealed significant differences among genotypes for most traits indicating existence of variability among genotypes. Results showed that maternal parents play the most important role. The general combining ability effect showed that Gm. 1031, Gm.62 and Sk.5 are good combiners for earliest, shortened and lower ear placement. Four inbred lines (Gm. 267, Gm. 50, Gm.66 and Gm. 64) and testers Sk.5 were good general combiner for grain yield. The crosses (Gm. 62×Sc. 130), (Gm. 66× Sk.5) and (Gm. 64×sd. 7) had significant values of SCA for plant and ear height and the cross (Gm. 52 × SC. 130) had significant values of SCA for grain yield. Most of all crosses had better performance than check varieties for earliness, short plant and lower ear placement. The two crosses (Gm. 64×Sk.5) and (Gm. 64×SC. 130) were better than all check varieties for grain yield. For grain yield, the cross (Gm. 66×Sd. 7) had a significant superiority percentage over check (SC 2031) while the two crosses (Gm. 52×SC. 130) and (Gm. 64 × SC.130) had significant superiority percentages over checks (TWC321 and TWC324). Therefore, Identify superior crosses to improve the yielding ability in maize breeding programs. [ABSTRACT FROM AUTHOR]

Copyright of Egyptian Journal of Agronomy is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Plant Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

ADOPTION of quality protein maize in Egyptian maize breeding programs would maximize the nutritional value of maize products. However, the assessment of adaptability of exotic quality protein maize germplasms is an important step before incorporating them in breeding programs. The current studies consisted of two experiments including a preliminary evaluation of some exotic quality protein maize inbreds and combine eight adapted elite inbreds into a halfdiallel cross. The current study revealed that CML158 exhibited the highest significant general combining ability effect with an average grain yield/plant of 53.0g. While CML492 contained the highest percentages of both protein (14.5%) and tryptophan (1.02%) with the highest values of general combining ability effects. Based on specific combining ability, the best parental combination for grain yield/plant was CML182×CML184, which yielded 239g and exceeded the average grain yield/plant of all hybrids (201.5g). It seems that CML143 possesses favorable alleles for increasing the percentage of protein (CML143×CML557) and tryptophan (CML158×CML491 and CML143×CML182) because it was a common parent in the best parental combinations for both traits. Mid-parent heterosis % varied from trait to trait; however, the highest amount of heterosis was detected in grain yield/plant due to its polygenic state. In conclusion, superior hybrids in yield and quality were detected. These hybrids need further evaluations across years and locations to assess stability. These hybrids can be considered as a cheap and sustainable source of high protein and tryptophan content for human consumption, which might play a magnificent role in food security in Egypt. [ABSTRACT FROM AUTHOR]

Copyright of Egyptian Journal of Agronomy is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This investigation was carried out at Sakha Agricultural Research Station Farm, ARC, Egypt during the two growing summer seasons (2015 and 2016). Six parents namely; Line 4, Line 10, Line 16, Line 17, Line 63 and Giza 102, were crossed in half diallel mating design, giving a total of 15 crosses, which were evaluated under three water treatments; (T1) normal irrigation every 14 days, irrigation every 21 days (T2) and irrigation every 28 days (T3) and compared with a check variety namely; Sakha 53. Through this study, general and specific combining ability were estimated for earliness attributes, yield and its components, seed oil percent and oil yield. Data revealed that, most of the variance due to irrigation treatments (I), genotypes (G), G x I, crosses (Cr), (GCA), (SCA), Crosses x I, GCA x I and SCA x I, showed highly significant differences for most traits under the three irrigation treatments and their combined analysis. The parents; (Giza 102) and (Line 63) considered as good combiners for earliness under the three irrigation treatments and their combined analysis. The parents; (Line 4), (Line 10), (Giza 102) and (Line 63) considered as good combiners for yield and its components under the three water treatments and their combined analysis. These parents could be used in breeding program aiming to regenerate genotype (s) characterized by high seed and oil yields. Based on the estimates of (s^ij), it could be summarized that the best crosses were; (Line 10 x Giza 102) and (Line17 x Giza 102) for earliness under T1, T2 and T3 and their combined data. For yield and yield components, the crosses; (Line 4 x Line 63), (Line 17 x Line 63), (Line 16 x Line 17), (Line 10 x Giza 102) and (Line 4 x Giza 102) under T1, T2, T3 and their combined data are the best crosses. These parents and crosses could be used as a hybrid varieties in sunflower cultivation under water stress conditions to cover a part of oil production gap in Egypt. [ABSTRACT FROM AUTHOR]

Six parental genotypes namely "673 (P1), 3M-637-D (P2), 3M-673-EB (P3), 86E2143 (P4), 86E2147 (P5) and WA20 (P6)" representing wide range of variability in most of the studied traits, were employed and crossed in half diallel fashion. This investigation was carried out at the Experimental Farm of lsmailia Agriculture Research station, Ismailia Governorate, Egypt, during the three summer seasons of 2015, 2016 and 2017, to study the important economical traits of muskmelon as fruit width, fruit length, flesh thickness, cavity diameter, total soluble solids, ascorbic acid content, carotenoids content, fruit weight, total yield/vine and fruit number/vine. A greater ratio of GCA/SCA than unity was detected for most studied traits, revealing that the inheritance of these traits was mainly controlled by additive gene effects. On the contrary, both TSS and ascorbic acid content traits, nonadditive type of gene action seemed to be more prevalent. The maximum significant MP heterosis in desirable direction (112.4%) was recorded for ascorbic acid followed by total yield/vine (101.0%), number of fruits per vine (100%), TSS (65.3%), flesh thickness (62.1%), fruit weight (59.8%) and fruit length (53.6%). Heterobeltiasis (over the best parent better, BP) was observed and the maximum significant manifestation was orderd as: Ascorbic acid (108%), number of fruits per vine (69.4%), both TSS (%) and cavity diameter (58.8%) and total yield per vine (49.8%). The cross 3M-637-D (P2) x 86E2143 (P4) was derived from low x high general combiner parents for total yield/ vine and exhibited the highest mean yield, highest heterosis, highest SCA effects for yield. It showed also, significant or highly significant desirable SCA .effects for eight important traits. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Plant Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)