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58. Antibacterial, anthelmintic, and analgesic activities of Piper sylvaticum (Roxb.) leaves and in silico molecular docking and PASS prediction studies of its isolated compounds

Author

Chy, Md. Nazim Uddin, primary, Chakrabarty, Nishan, additional, Roy, Ajoy, additional, Paul, Arkajyoti, additional, Emu, Khadija Aktar, additional, Dutta, Trishala, additional, Dutta, Emon, additional, Ferdous, Irin, additional, Das, Raju, additional, Hasan, Md. Jahid, additional, and Tasnim, Syeda Mashnia, additional

Published
2019
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60. Phenotype study of multifoliolate leaf formation in Trifolium alexandrinum L.

Author

Malaviya, Devendra Ram, Roy, Ajoy Kumar, Kaushal, Pankaj, Pathak, Shalini, and Kalendar, Ruslan

Subjects
PHENOTYPES, CLOVER, CHROMOSOMAL rearrangement, LEAF development, EPIGENETICS, PLANT tissue culture
Abstract

Background. The genus Trifolium is characterized by typical trifoliolate leaves. Alterations in leaf formats from trifoliolate to multifoliolate, i.e., individual plants bearing trifoliolate, quadrifoliolate, pentafoliolate or more leaflets, were previously reported among many species of the genus. The study is an attempt to develop pure pentafoliolate plants of T. alexandrinum and to understand its genetic control. Methods. The experimental material consisted of two populations of T. alexandrinum with multifoliolate leaf expression, i.e., interspecific hybrid progenies of T. alexan-drinum with T. apertum, and T. alexandrinum genotype Penta-1. Penetrance of the multifoliolate trait was observed among multifoliolate and trifoliolate plant progenies. In vitro culture and regeneration of plantlets from the axillary buds from different plant sources was also attempted. Results. The inheritance among a large number of plant progenies together with in vitro micro-propagation results did not establish a definite pattern. The multifoliolate leaf formation was of chimeric nature, i.e., more than one leaf format appearing on individual branches. Reversal to normal trifoliolate from multifoliolate was also quite common. Penetrance and expression of multifoliolate leaf formation was higher among the plants raised from multifoliolate plants. Multifoliolate and pure pentafoliolate plants were observed in the progenies of pure trifoliolate plants and vice-versa. There was an apparent increase in the pentafoliolate leaf formation frequency over the years due to targeted selection. A few progenies of the complete pentafoliolate plants in the first year were true breeding in the second year. Frequency of plantlets with multifoliolate leaf formation was also higher in in vitro axillary bud multiplication when the explant bud was excised from the multifoliolate leaf node. Conclusion. Number of leaflets being a discrete variable, occurrence of multifoliolate leaves on individual branches, reversal of leaf formats on branches and developing true breeding pentafoliolates were the factors leading to a hypothesis beyond normal Mendelian inheritance. Transposable elements (TEs) involved in leaf development in combination with epigenetics were probably responsible for alterations in the expression of leaflet number. Putative TE's movement owing to chromosomal rearrangements possibly resulted in homozygous pentafoliolate trait with evolutionary significance. The hypothesis provides a new insight into understanding the genetic control of this trait in T. alexandrinum and may also be useful in other Trifolium species where such observations are reported. [ABSTRACT FROM AUTHOR]

Published
2021
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61. Assessment of anti-nociceptive and anthelmintic activities of Vitex Peduncularis Wall. leaves and in silico molecular docking, ADME/T, and PASS prediction studies of its isolated compounds

Author

Auniq, Reedwan, primary, Chy, Md, additional, Adnan, Md, additional, Roy, Ajoy, additional, Islam, Mohammad, additional, Khan, Tourna, additional, Hasan, Md, additional, Ahmed, Suhel, additional, Khan, Mohammad, additional, Islam, Nazmul, additional, Khan, Muhammad, additional, Hossain, Md, additional, Kabir, Md, additional, Mukut, Md, additional, and Islam, Sabrina, additional

Published
2019
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63. Interspecific compatibility barriers, development of interspecific hybrids through embryo rescue and lineage ofTrifolium alexandrinum(Egyptian clover)-important tropical forage legume

Author

Malaviya, Devendra R., primary, Roy, Ajoy K., additional, Kaushal, Pankaj, additional, Chakraborti, Mridul, additional, Yadav, Aradhana, additional, Khare, Ambica, additional, Dhir, Richa, additional, Khairnar, Dushyant, additional, and George, Ginu Percis, additional

Published
2018
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64. Tropical Forage Legumes in India: Status and Scope for Sustaining Livestock Production

Author

Singh, Tejveer, Ramakrishnan, Srinivasan, Mahanta, Sanat Kumar, Tyagi, Vikas C., Roy, Ajoy Kumar, Singh, Tejveer, Ramakrishnan, Srinivasan, Mahanta, Sanat Kumar, Tyagi, Vikas C., and Roy, Ajoy Kumar

Abstract

Livestock contributes enormously in food and nutritional security apart from livelihood security to rural population all over the world. India has the largest number of livestock, representing over 17% of world population. Availability of forage legumes is essential for better animal health, production and increasing the nutritive value of forage-based rations, besides providing a source of biological nitrogen fixation for enriching soil, reducing land degradation and mitigating climate change. However, supply of quality green fodder in India is extremely precarious, and the gap is huge against demand. The major fodder legume crops cultivated in India are Medicago sativa, Trifolium alexandrinum, Vigna unguiculata, Vigna umbellate and range legumes are Stylosanthes spp., Desmanthus virgatus, and Clitoria ternatea. Indian subcontinent represents wide spectrum of eco-climates and reported diversity of 21 forage legumes genera viz., Desmodium, Lablab, Stylosanthes, Vigna, Macroptelium, Centrosema and browse plants Leucaena, Sesbania, Albizia, Bauhinia, Cassia, Grewia, etc. Diversity of forage legumes were collected (>3200 accessions), evaluated and sources for different biotic and abiotic stress tolerance were identified, apart from >50 cultivars developed. Considering these aspects, tropical legumes for livestock production, soil health and ecosystem services, diversity, evaluation and breeding for improved varieties are discussed in this chapter.

Published
2018
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66. Requirement Of Completion Of Value Chain In Providing Data By Exporters In The Questionnaire Response In India - Critical Overview

Author

Roy, Ajoy

Subjects
Dumping (International trade) -- Laws, regulations and rules -- Surveys, Antidumping duties -- Laws, regulations and rules -- Surveys, Trading companies -- Laws, regulations and rules -- Surveys, Government regulation, Business, international, World Trade Organization -- Surveys
Abstract

1. INTRODUCTION In the recent age of trade protectionism, anti-dumping measures have come to be used as the most widely recognised tools to enforce trade remedies. These measures are adopted [...]

Published
2017

70. Interspecific compatibility barriers, development of interspecific hybrids through embryo rescue and lineage of Trifolium alexandrinum (Egyptian clover)—important tropical forage legume.

Author

Malaviya, Devendra R., Roy, Ajoy K., Kaushal, Pankaj, Chakraborti, Mridul, Yadav, Aradhana, Khare, Ambica, Dhir, Richa, Khairnar, Dushyant, and George, Ginu Percis

Subjects
*SPECIES hybridization, *BERSEEM, *LEGUME farming, *GERMINATION, *CLOVER, *POLLEN tube
Abstract

Abstract: Genetic improvement of Trifolium alexandrinum L. is hampered because of narrow genetic base and lack of interspecies compatibility information. The study was envisaged to understand the interspecies incompatibility and the affinity between T. alexandrinum and 22 species of the genus representing different sections and to develop interspecific crosses. Development of interspecific hybrids with T. resupinatum, T. lappaceum, T. subterraneum, T. vesiculosum and T. echinatum, through embryo rescue, revealed their affinity with T. alexandrinum. Failure of pollen germination or restricted pollen tube growth showed its distant relatedness with T. clypeatum, T. balansae, T. purpureum, T. leucanthum, T. hirtum, T. pilulare and T. hybridum. Pollen tubes reached up to ovule among the crosses with T. alpestre, T. repens and T. nigrescens, whereas it travelled up to ovary among the crosses with T. angustifolium, T. grandiflorum and T. dasyurum indicating need of manipulation to overcome barrier. Thus, incompatibility of T. alexandrinum with many Trifolium species could be overcome through embryo rescue with intensive crossing. Egyptian clover ecotype ‘Fahli’ was more compatible with other species than ‘Mescavi’. [ABSTRACT FROM AUTHOR]

Published
2018
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76. A New Facial Expression to Botox

Author

Aggarwal, Aakash, primary, Banas, Emerald, additional, Shah, Rushikesh, additional, Singh, Pahul, additional, Manocha, Divey, additional, Sampath, Praveen, additional, and Roy, Ajoy, additional

Published
2013
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