An Innovative Breeding Method for Germplasm of Yellow Eurasia

Abstract

The invention relates to a crop breeding method, in particular to an innovative breeding method for the germplasm of the yellow European group, comprising the following steps: selecting the inbred line of the yellow European group as one of the parents, and hybridizing it with the inbred line of the European durum germplasm, and using the tall and strict The method of line selection by continuous self-crossing to select several excellent inbred lines; use SSR molecular marker technology to confirm that the selected inbred lines belong to the Yellow European group; select the inbred lines from the X group as the female parent test species test cross; test cross species Taking the current main corn varieties in my country as a control, repeated planting in multi-point and multi-row areas, the yield of the selected test cross combination exceeds 10% of the main corn varieties in my country, and has stable yield, adaptability, lodging resistance, disease resistance, and density tolerance. Drought, grain dehydration rate and grain water content are better than the inbred line of Huanggaiqun inbred line and the corresponding hybrid combination of European hard-grained germplasm inbred line, which is the new germplasm of Huangouqun. The method of the invention aims at developing germplasm resources in my country which are early-maturing, dense and drought-resistant, disease-resistant and lodging-resistant, with fast grain dehydration speed and low grain water content.

Description

technical field [0001] The invention relates to a crop breeding method, in particular to an innovative breeding method for the germplasm of the eucalyptus. Background technique [0002] Maize germplasm resources are the material basis for cultivating high-yielding, high-quality, multi-resistant hybrids. In particular, local germplasm resources with good ecological adaptability are indispensable and important materials. At present, due to the impact of foreign excellent germplasm resources, a large part of domestic maize genetics and breeding institutions have given up the research and utilization of the germplasm of the yellow group, resulting in a significant decline in the genetic gain of my country's unique local germplasm. Moreover, in recent years, natural disasters such as wind and rain, drought, pests and diseases in my country's main corn producing areas are frequent, and problems such as lodging, downturning, slow grain dehydration, and high grain water content are...

AI Technical Summary

Problems solved by technology

At present, due to the impact of foreign excellent germplasm resources, a large part of domestic maize genetics and breeding units have given up the research and utilization of the germplasm of the yellow group, resulting in a significant decline in the genetic gain of my country's unique local germplasm

Moreover, in recent years, natural disasters such as wind and rain, drought, pests and diseases in my country's main corn producing areas are frequent, and problems such as lodging, downturning, slow grain dehydration, and high grain water content are very serious, making most of the corn inbred lines on the market unable to adapt to the current And in the future corn production, there is an urgent demand for germplasm resources with excellent comprehensive traits such as early maturity, high density and drought tolerance, strong disease resistance and lodging resistance, fast grain dehydration speed, and low grain water content.

[0003] In order to meet the needs of the situation and solve the problems of poor density and drought tolerance, poor disease resistance and lodging resistance, slow grain dehydration speed and high grain water content in most of the current maize inbred lines in my country, we put forward the A kind of innovative breeding method for germplasm of yellow European group