Chromosome characters of three indigenous medicinal plants of high repute were studied. Their karyotypes were commonly mono-modal, decreasing in length from the longest to the shortest chromosomes. The chromosome complement in centromeric positions was 6sm+34M+24m for Bacopa monnieri (L.)Wettst. (2n064), 2m.st+12M+6sm+2m for Tylophora indica (Burm.f.) Merrill (2n022) and 2m.st+4m.sm+4M+18m+20sm for Withania somnifera (L.) Dunal (2n048). © Archana Sharma Foundation of Calcutta 2012.

T SAMADDAR

S NATH

M HALDER

B SIL

D ROYCHOWDHURY

S SEN

S JHA

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

&nbsp;

The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

&nbsp;

It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Nucleus (India)

Karyomorphological studies of three locally important species of Allium, namely, A. tuberosum, A. chinense and A. schoenoprasum, were performed to highlight the chromosomal variations between them, despite the fact that all of them are known as "chives" in commerce, due to their overall morphological similarities. Only critical morphological analyses reveal several important phenotypic dissimilarities between the three species. Karyomorphological investigations show that A. tuberosum and A. chinense are both 2n = 32, and A. schoenoprasum is 2n = 16. A. chinense has maximum karyotype symmetry among the three, and most of its chromosomes are of either median or submedian types. The karyotype of A. tuberosum is characterized by the presence of different types of secondary constrictions, while A. schoenoprasum, apart from showing the maximum karyotype asymmetry among the three, also reveals the presence of at least one pair of acrocentric chromosomes. © 2014 Archana Sharma Foundation of Calcutta.

Comparative karyomorphological studies of three edible locally important species of Allium from India

Transgenic plants of Tylophora indica obtained via somatic embryogenesis through genetic transformation by Agrobacterium rhizogenes have been maintained in vitro for over 6 years and the comparison of long term cultures and field grown normal and transformed plants on various morphological, biochemical and molecular characterisation described. Ri-transformed plants were found to be morphologically stable after 6 years in axenic culture as well as after transfer to the field. Genetic stability for rolA, rolB, rolC and rolD genes were obtained in Ri-transformed plants prior to and after transfer to field. The chromosome number, 2n = 22 was maintained in all the transgenic plants. The Ri-transformed plants retained and expressed all the four rol genes after transfer to the field and were able to synthesise and accumulate tylophorine. Thus, the Ri-transformed plants were found to be stable for more than 6 years in vitro and after 1year of field transfer. © 2013 Archana Sharma Foundation of Calcutta.

Genetic and morphological stability of six-year-old transgenic Tylophora indica plants

Plant Systematics and Evolution

Utility of a multidisciplinary approach for genome diagnostics of cultivated and wild germplasm resources of medicinal Withania somnifera, and the status of new species, W. ashwagandha, in the cultivated taxon

ChemInform

ChemInform Abstract: Withasteroids, a Growing Group of Naturally Occurring Steroidal Lactones

Hereditas

NOMENCLATURE FOR CENTROMERIC POSITION ON CHROMOSOMES

CYTOLOGIA

Cytogenetic Studies in Withania somnifera (L.) Dun. (Solanaceae)

Cancer Research

Novel Mode of Action of Tylophorine Analogs as Antitumor Compounds

Karyotype analysis of three important traditional indian medicinal plants, bacopa monnieri, tylophora indica and withania somnifera

Journal	Nucleus (India)
Publisher	-
ISSN	0029-568X