Genetic analysis of resistance to powdery mildew on 7M^g chromosome of wheat-Aegilops geniculata, development and utilization of specific molecular markers.

ABSTRACT:

Background

Powdery mildew caused by Blumeria graminis f. sp. tritici (Bgt) is prevalent in the main wheat-producing regions of China, resulting in severe yield losses in recent years. Mining and utilization of resistant genes from wild relatives of wheat is the most environmentally sound measure to control disease. Aegilops geniculata Roth (2n = 2x = 28, U^gU^gM^gM^g) is an essential and valuable disease-resistance gene donor for wheat improvement as a close relative species.

Results

In this study, to validate powdery mildew resistance locus on chromosome 7M^g, two genetic populations were constructed and through crossing wheat - Ae. geniculata 7M^g disomic addition line NA0973-5-4-1-2-9-1 and 7M^g (7 A) a

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9719254 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature