On the development of a new set of primary trisomics in an Indian maize

Premachandran, M.N. and Sarkar, K.R. (1992) On the development of a new set of primary trisomics in an Indian maize. Indian Journal of Genetics & Plant Breeding, 52 (1). pp. 7-10.

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Karyotype analysis was carried out on root tip squashes of the following material: Alexander's Synthetic B tetraploid (2n = 4x = 40) crossed with a diploid inbred line (2n = 2x = 20) to obtain triploids (2n = 3x = 30); these triploids crossed with the diploid line; and the resultant plants selfed or crossed with the diploid line. Grains were identified as plump, semiplump, or shrivelled. It was found that: (1) any extra chromosome was transmitted through the female gamete in the 3x X 2x crosses; and (2) plump grains from 3x X 2x crosses had the highest frequency of 2n = 21 trisomic plants and a high survival rate

Item Type: Article
Author Affiliation: Division of Genetics, Indian Research Institute, New Delhi 110012, India
Subjects: Crop Improvement
Divisions: Maize
Depositing User: Mr B Krishnamurthy
Date Deposited: 05 Jan 2011 19:39
Last Modified: 05 Jan 2011 19:39
Official URL: http://www.indianjournals.com/ijor.aspx?target=ijo...
URI: http://eprints.icrisat.ac.in/id/eprint/1257

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