Indian Society of Genetics & Plant Breeding

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MEIOTIC STUDIES IN AN INTERGENERIC HYBRID BETWEEN TRITICUM AESTIVUM L, AND THINOPYRUM BESSARABICUM AND THEIR BACKCROSS PROGENIES

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In order to transfer desirable traits from diploid wheatgrass, an intergeneric hybrid
(Triticum tlestivu". cv. Chinese Spring monosomic 5B X Thino""",,,. besStlrtlbicu". with
2n ... 2x ... 14, JJ genome) was backcrossed to two breadwheat cultivars. Pollination of the Ft
hybrid (2n = 27, ABDJ) with the pollen of wheat cultivars resulted in one BCt hybrid (2n =
48) planL Subsequentbackcrossingwithcommonwheat produced about 60 BCz plantswith
the chromosome number ranging from 2n ... 38 to 48. Plants having 2n ... 48 chromlJsomes
were also observed in BC3 generation. The phenomenon of meiotic nonreduction was
observed in BCt, BCz and BC3 progenies. Analysis of these progenies led to identification
of the supposed wheat Th. besstlrtlbicu". addition lines.
 

Keywords: Thinopyrum bessarabicum, Triticum aestivum, intergeneric hybrid, meiotic analysis, meiotic nonreduction.

Info

Year: 1995
Volume: 55
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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