Meiotic pairing control in wheat–rye hybrids. I. Effect of different wheat chromosome arms of homoeologous groups 3 and 5

1 February 1991

journal article
Published by Canadian Science Publishing in Genome

Vol. 34 (1) , 72-75
https://doi.org/10.1139/g91-012

Abstract

Wheat–rye hybrids were analyzed to study how the homoeologous-pairing control of wheat is altered when specific regulators of groups 3 and 5 are lacking or mutated. Lack of the 3DS chromosome arm and the ph2b mutation showed the most significant effect, due to a deficiency or inactivity of the Ph2 suppressor. The 3DL, 5AS, and 5BS chromosome arms have a promoting effect, 5BS being the most effective. A weak suppressive effect of 3AS and 3AL is proposed, and a promotive effect of 5DS was not ruled out. The suppressive effect of 3BS is discussed.Key words: Triticum aestivum, Secale cereale, homoeologous chromosomes, genetic pairing regulation.

Keywords

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