A kind of SNP molecular marker related to wheat ear germination resistance and its application

Abstract

The invention provides a SNP molecular marker related to wheat ear germination resistance and its application, and specifically relates to the technical field of genetic breeding. The SNP site corresponds to the C / T base mutation; develop CAPS mark according to SNP molecular mark, and described CAPS mark is named as TaE3, and described TaE3 has the nucleotide sequence as shown in SEQ ID NO.5 or the nucleus as shown in SEQ ID NO.6 nucleotide sequence. CAPS markers are used to identify wheat cultivars resistant to panicle germination. The detection method of the invention is simple and convenient, and can be used for molecular marker assisted breeding of wheat resistance to PHS.

Description

technical field [0001] The invention belongs to the technical field of wheat genetics and breeding, and in particular relates to a SNP molecular marker related to wheat ear germination resistance and its application. [0002] technical background [0003] Wheat ear germination (Pre-harvest Sprouting, PHS) refers to the phenomenon that the wheat grains germinate directly on the wheat ear when it encounters continuous rainy weather before harvesting or is in a high humidity environment for a long time. The occurrence of PHS not only reduces the yield of wheat, but also easily leads to the decline of quality, and even the loss of plant value in severe cases, causing huge economic losses to agricultural production. For example, the storage substances (protein, starch, etc.) in the endosperm of germinated wheat are degraded, and the nutritional quality is degraded; especially, the bread made from germinated wheat has poor elasticity and is not easy to be cut, the color of the stea...

AI Technical Summary

Problems solved by technology

In 2016, most of the winter wheat region in the north, most of southern China in the south of the Yangtze River, parts of the eastern part of Southwest China, Jianghuai, western Huanghuai and Northwest China had frequent precipitation during the wheat harvest season, which greatly affected wheat harvesting and drying, resulting in serious PHS disasters. Yields almost halved, quality deteriorated, and farmers and smallholders without dryers lost even more

Although good progress has been made in the genetic mechanism of wheat ear germination resistance, its detailed genetic basis and molecular regulation mechanism are still unclear.

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