Technology for improving high-quality thermo-sensitive genic male sterility rice material by grouping shuttle method

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of crop hybrid breeding, in particular to a technology for improving high-quality temperature-sensitive genital sterile rice material by a group shuttle method. Background technique [0002] At present, the well-known rice population improvement technology-reincarnation selection is mainly aimed at improving a single trait. Parental selection does not consider the relationship between kinship and gene expression and the environment, and cannot make good use of the gene difference between parents to improve the level of heterosis. . [0003] In order to overcome the shortcomings of the existing population improvement technology-recurrent selection is mainly aimed at improving a single trait, parental matching does not consider genetic relationship, and cannot make good use of the genetic difference between parents to improve the level of heterosis. SUMMARY OF THE INVENTION [0004] Aiming at the deficienci...

AI Technical Summary

Problems solved by technology

[0002] At present, the well-known rice population improvement technology - recurrent selection is mainly aimed at the improvement of a single trait. The relationship between kinship and gene expression and the environment is not considered when parents are selected, and the genetic difference between the parents cannot be well used to improve the level of heterosis.

[0003] In order to overcome the existing population improvement technology - recurrent selection is mainly aimed at the improvement of a single trait, the parental relationship is not considered when mating, and the genetic difference between the parents cannot be well used to improve the level of heterosis.