A series of molecular markers and their application in molecular markers of wheat ear germination genes

Abstract

The application belongs to the technical field of molecular breeding of wheat, and specifically relates to a series of molecular markers and their application in molecular markers of wheat ear germination genes. There are 4 molecular markers in total, including one SSR marker and three KASP markers, of which the SSR marker is Xgwm383b marker; the three KASP markers are: A009711, A009180, A009716. In cultivar cultivation, the main way to transfer excellent genes from Jiejiemai to wheat is to create a series of wheat / Jiejiemai substitution lines, and to introduce Jiejiemai chromosomes into the wheat background by means of distant hybridization. For this breeding method, the present application uses the actual F 2 Taking the population as an example, a series of molecular markers were designed to detect and track the chromosome situation of Jiejie introduced into the wheat background, and then used to guide the breeding of new wheat varieties with resistance to ear germination, which has good practical value.

Description

technical field [0001] The application belongs to the technical field of molecular breeding of wheat, and specifically relates to a series of molecular markers and their application in molecular markers of wheat ear germination genes. Background technique [0002] Wheat ear germination (Pre-harvest sprouting, PHS) is a phenomenon of germination on the ear caused by rain or humid environment after the physiological maturity of wheat before harvest. The phenomenon of ear germination not only affects the yield of wheat, but also seriously affects the quality of processing, seed storage and sowing in the next year, resulting in different degrees of economic losses. [0003] Wheat spike germination is a worldwide climatic disaster, and spike germination occurs in wheat producing areas all over the world, causing serious losses. In my country, ear germination mainly occurs in the Yangtze River Basin, the southwest wheat area and the northeast spring wheat area. Large-scale ear ge...

AI Technical Summary

Problems solved by technology

Because of the large losses caused, breeders from all over the world attach great importance to wheat ear germination, and have conducted a lot of research on its identification methods, resistance mechanisms, genetic mechanisms, and molecular markers. However, there has been no breakthrough in wheat ear germination resistance breeding.

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