Variations of wheat (Triticum aestivum L.) chromosomes caused by the 5A chromosomes with complex cytological structure.

ABSTRACT: To study the effects of structural alterations of chromosomes caused by tandem repeats on the meiotic recombination, the wheat (Triticum aestivum L.) 5A chromosomes with different structure from ten wheat cultivars were used to investigate their meiotic recombination using non-denaturing fluorescence in situ hybridization (ND-FISH) technology. Fifteen cross combinations were carried out and they were divided into seven F₁ categories. The structural difference between the intercalary regions of the long arms of the two 5A chromosomes (5AL) in the F₁ categories III, VI, and VII was greater than that in the categories I and II, subsequently, the recombination frequencies in the distal regions of the 5AL arm in the progenies from the three categories were si

SUBMITTER: Zou Y 

PROVIDER: S-EPMC9465395 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature