Research Progress and Prospect of Low Temperature Germinability in Rice
Low temperature germinability is an indispensable trait for rice to adapt to extreme weather,especially for direct seeding of rice.This article reviewed the research progress on evaluation methods,physiological mechanism,molecular cloning and genetic breeding of rice low temperature germination in recent years,and proposed research trends and prospects.In the evaluation of rice low temperature germination,13 ℃-15 ℃ is often used as the test temperature and the germination rate on the 10th day of low temperature germination is used as the evaluation index.More than 100 QTLs related to rice low temperature germination have been identified by mapping cloning and genome-wide association analysis(GWAS),but only 4 target genes have been cloned,and there is little research on the molecular mechanism.At present,rice varieties with strong low-temperature germination ability are mainly selected from cultivated varieties.The study of physiological and molecular mechanisms of low temperature germination in rice will be helpful to improve the evaluation of low temperature germination and its breeding application.
ricelow temperature germinationevaluation methodsmolecular cloninggenetic breeding
万方数据
维普
