Chromosome diversity in Dasypyrum villosum, an important genetic and trait resource for hexaploid wheat engineering.

ABSTRACT:

Background and aims

Dasypyrum villosum (2n = 2x = 14) harbours potentially beneficial genes for hexaploid and tetraploid wheat improvement. Highly diversified chromosome variation exists among and within accessions due to its open-pollination nature. The wheat-D. villosum T6VS·6AL translocation was widely used in breeding mainly because gene Pm21 in the 6VS segment conferred high and lasting powdery mildew resistance. However, the widespread use of this translocation may narrow the genetic base of wheat. A better solution is to utilize diversified D. villosum accessions as the genetic source for wheat breeding. Analysis of cytological and genetic polymorphisms among D. villosum accessions also provides genetic evolution information on the species. Using cytogenetic and molecular to

SUBMITTER: Wu N 

PROVIDER: S-EPMC9904354 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature