The invention relates to the technical field of
crop hybrid breeding, and discloses a technology for improving a high-quality thermo-sensitive genic male sterile rice material by a grouping shuttle method, which comprises the following steps of: 1, collecting resources, identifying
genetic composition of the resources by using a conventional and molecular technology, and dividing the resources into a female parent class A and a male parent class B according to the requirements of
hybrid seeds on male and female parents; and step 2, classifying the collected resources. According to the technology for improving the high-quality thermo-sensitive genic male
sterility rice material through the grouping shuttle method, classification is carried out according to
germplasm resource sources, identification is carried out through a molecular technology, main resource materials needing to be improved and utilized can be divided into a class A and a class B according to the genetic relationship, enough target character genes exist in the classes as much as possible, and therefore the purpose of improving the high-quality thermo-sensitive genic male
sterility rice material is achieved. The genetic relationship among the categories is as far as possible, the
gene difference is as large as possible, and favorable genes can be fully expressed by placing the categories in different environments in turn during selection, especially under an adversity condition.