Method for breeding high-yield, ultrahigh-yield, and multi-resistant wheat

Abstract

The method provides a method for breeding high-yield, ultrahigh-yield, and multi-resistant wheat. The method comprises the following steps: taking a disease-resistant, high-yield, and modified dwarf-male-sterile wheat group A as the female parent and 03-50618 as the male parent to carry out hybridization, then taking 03-50618 as the recurrent parent to carry out continuous backcrosses for three generations, selecting the fertile line from the dwarf-male-sterile wheat after the backcrosses, and carrying out continuous multi-generation selfing breeding through an improved pedigree method until a new wheat species that is accord with the breeding standards is obtained. In order to overcome the technical difficulties existing in high-yield wheat species such as lodging, bad adaptability, and bad disease resistant property, parent screening and creation are carried out to continuously improve dwarf-male-sterile wheat group, excellent genes are hybridized and reconstituted, and the genetic basis is enriched. A novel method is provided for breeding high-yield, ultrahigh-yield, and multi-resistant wheat.

Description

technical field [0001] The invention relates to breeding technology, in particular to a method for breeding high-yield, super-high-yield, multi-resistance wheat. Background technique [0002] The Huanghuai winter wheat area is the main wheat producing area in my country. The wheat area in the Huanghuai wheat region alone accounts for more than 40% of the country's wheat area, and its output accounts for more than 45% of the country's total output. Wheat is the most important food crop in Henan Province. As the first major wheat province, the annual sowing area is more than 75 million mu, accounting for about 1 / 5 of the national wheat sowing area. Wheat variety. It requires well-developed root system, good drought tolerance, resistance to severe winter cold, good overwintering ability, and resistance to spring cold. Although this province is an area where stripe rust occurs occasionally, the climate is suitable when there is more spring rain, and when there are bacterial s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current situation where the contradiction between supply and demand of wheat is becoming more and more prominent, the present invention provides a method for breeding high-yield, super-high-yield and multi-resistance wheat