Establishment of Dominant Population of Northern Spring Wheat

Abstract

The invention relates to establishment of a dominant population of northern spring wheat, belonging to the technical field of selective breeding of plant varieties. The technology provided by the invention comprises the following steps: according to complicated relationships like blood relationship, genetic relationship and geographical relationship, dividing northern spring wheat varieties into two simple dominant populations, i.e., a population m and a population n, then selecting a plurality of improved varieties popularized in a proper wheat region and carrying out diallel crossing, and seeking a best combination (m and n) as a tester; subjecting breeder-owned key backbone resources to correspondingly cross-breeding with the population m and the population n, then carrying out field identification and variety testing, eliminating the combination with a yield lower than the yield of the tester, retaining the progeny combination cross-breeding with the population m with the yield higher than the yield of the tester and carrying out including into a group n, and retaining the progeny combination cross-breeding with the population n with the yield higher than the yield of the tester and carrying out including into a group m; respectively carrying out diallel crossing in the group m and the group n; then selecting a best combination from each group, and carrying out cross-breeding so as to create an ideal variety; meanwhile, using the created ideal variety as the tester in a second round for a next cycle. The main purposes for establishment of the dominant population of the northern spring wheat are to shorten the time of northern spring wheat breeding and realize early selection of an ideal main popularized northern spring wheat variety which is urgently needed in local.

Description

Technical field [0001] The patent of the invention belongs to the technical field of breeding of spring wheat varieties in northern China. The method can shorten the time of wheat breeding, and can select the main varieties of conventional spring wheat urgently needed by the local area at an early date. technical background [0002] The traditional parental selection of spring wheat is based on geographic location, such as northeast spring wheat, northwest spring wheat, and European and African wheat varieties, as well as blood relationship, such as wild, cultivated, distantly related, closely related, and grain type , such as long awn, short awn and no awn, these methods are neither scientific nor accurate and complicated, and are prone to close relatives or close relatives or self-crossing, etc., so it is difficult to breed ideal varieties. This technology invention method Simple and scientific, that is, materials or varieties (parents) are divided into two groups, materia...

AI Technical Summary

Problems solved by technology

[0002] The traditional parental selection of spring wheat is based on geographic location, such as northeast spring wheat, northwest spring wheat, and European and African wheat varieties, as well as blood relationship, such as wild, cultivated, distantly related, closely related, and grain type , such as long awn, short awn and no awn, these methods are neither scientific nor accurate and complicated, and are prone to close relatives or close relatives or self-crossing, etc., so it is difficult to breed ideal varieties. This technology invention method Simple and scientific, that is, divide the materials or varieties (parents) into two groups, select materials by crossing within groups, and select varieties by crossing between groups