Molecular cytogenetics for a wheat-Aegilops geniculata 3M^g alien addition line with resistance to stripe rust and powdery mildew.

ABSTRACT:

Background

Aegilops geniculata Roth is closely related to common wheat (Triticum aestivum L.) and is a valuable genetic resource for improvement of wheat.

Results

In this study, the W19513 line was derived from the BC₁F₁₀ progeny of a cross between wheat 'Chinese Spring' and Ae. geniculata SY159. Cytological examination showed that W19513 contained 44 chromosomes. Twenty-two bivalents were formed at the first meiotic metaphase I in the pollen mother cellsand the chromosomes were evenly distributed to opposite poles at meiotic anaphase I. Genomic in situ hybridization demonstrated that W19513 carried a pair of alien chromosomes from the M genome. Fluorescence in situ hybridization confirmed detection of variation in chromosomes 4A and 6B. Functional mole

SUBMITTER: Wang Y 

PROVIDER: S-EPMC8647465 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature