New evidence on the phylogeny of basic chromosome number in Pennisetum

Rao, Y S and Rao, S A and Mengesha, M H (1989) New evidence on the phylogeny of basic chromosome number in Pennisetum. Current Science, 58 (15). pp. 869-871. ISSN 0011-3891

Preview

PDF - Published Version Download (863kB) | Preview

Abstract

Meiosis was studied in P. ramosum, P. schweinfurthii and P. mezianum. Chromosome pairing was normal in P. ramosum (2n = 10) with the formation of 5 ring bivalents. In 30% of the P. schweinfurthii (2n = 14) PMCs analysed 2 trivalents and 4 bivalents were formed. Pollen fertility was 73%. P. mezianum (2n = 16) had mostly bivalents at diakinesis and metaphase I. In 23% of PMCs 2 trivalents/cell were noted. Pollen stainability was 83%. Trivalent formation suggests chromosome duplication in P. mezianum and P. schweinfurthii. It is assumed that the chromosome complement in Pennisetum has evolved from a base number of 5.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Genetics and Genomics Others > Plant Pathology
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	20 Feb 2012 05:14
Last Modified:	20 Feb 2012 05:16
URI:	http://oar.icrisat.org/id/eprint/5550
Official URL:	http://cs-test.ias.ac.in/cs/php/toc.php?vol=058&is...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

View Statistics

Actions (login required)

View Item