A germplasm with inhibitory effect on the expression of Lanaibai/Lanbai ms2 trait and its breeding method

Abstract

The invention discloses a kind of anti-blue dwarf defeat / blue defeat Ms. 2 The invention relates to a germplasm with an inhibitory effect on the expression of a trait and a breeding method thereof, belonging to the field of wheat breeding. The germplasm of the present invention is made up of four parental materials with partial exogenous blood relationship, paired in two groups, single-crossed and then re-crossed, and then continuously self-crossed to the re-crossed progeny. Germplasm with complete inhibition of blue-bleed sterility. The germplasm material obtained by the invention is the blue dwarf or blue rot pollination, which can make all the seeds bearing on the blue dwarf or blue rot plant fertile, the sorted blue grains have anther pollen in the next generation, and can self-fertilize It can pollinate and hybridize common wheat; it has broken the current status of blue dwarf or blue grain sterility. It provides valuable germplasm resources for solving the cytoplasm replacement of sterile lines in the future, and will solve the potential threat of the single existence of cytoplasm in sterile lines.

Description

technical field [0001] The invention relates to the field of wheat breeding, in particular to a kind of anti-blue dwarf bait / blue bait Ms. 2 Germplasm with inhibitory effect on trait expression and its breeding method. Background technique [0002] Lanaibai and Lanbai are two new wheat dominant male sterile lines, both of which are additional monosomy of chromosome 4D#. Lanaibai is a sterile line marked by blue grain and dwarf; Lanaibai is a sterile line marked by blue grain. Both sterile lines use blue grain as a marker trait, and the blue-grain sterile seeds can be sorted by color sorting before the seeds go to the ground, which opens up a new way and brings new hope for the future utilization of wheat heterosis. [0003] The sterility genes of the two sterile lines, Lanbai and Lanaibai, were derived from the dominant genetic sterile single gene Ms. 2 , the sterile material has many advantages such as complete anther abortion and large glume opening angle. [0004] Bef...

AI Technical Summary

Problems solved by technology

The germplasm has the ability to restore fertility to the CMS line and the CMS line, providing valuable germplasm resources for solving the cytoplasm replacement of the CMS line in the future, and will solve the potential threat of the single existence of the CMS line cytoplasm problem