The invention discloses application of male
sterility gene OsDPW2 and a rice
sterility recovery method. OsDPW2
gene is knocked out, changed or inhibited by using the conventional
genetic engineering method or on the basis of a
CRISPR / Cas9
system, and the expression level of the OsDPW2
gene is reduced in
japonica rice background
wild type rice, so that a rice male
sterility line is obtained. The invention further relates to the rice sterility
recovery method, the OsDPW2 gene is amplified by primers, a
mutant plant is transformed by a genetic transformation means, and a
mutant can be recovered to be in wild
phenotype. In a rice nutritional growth period of the rice male sterility line prepared by the invention, abnormal phenotypes do not exist; but in an anther development process of a reproductive growth period, abnormal phenotypes exist. If the male sterility gene OsDPW2 is used in
cross breeding, operation of female parent
emasculation can be avoided, production efficiency is greatly improved, labor cost is reduced, and the male sterility gene OsDPW2 has important application on agricultural production.