Hybridizing and breeding method of dwarf winter wheat

Abstract

The invention disclose a hybridizing and breeding method of dwarf lodging-resistant winter wheat with high photosynthetic efficiency of wheat and low seed charge and fertilizer feed. The method comprises the following steps: carrying out interspecific hybridization of varieties of Masutuo wheat and big heat wheat; selecting a 61-1 wheat strain from a hybrid generation as a cross parent; carrying out hybridization with Westmount wheat variety; then, selecting a 61-4 wheat strain from the hybrid generation of Westmount wheat variety and 61-1 wheat variety as the cross parent again; and carrying out hybridization with the wheat strain 84114 to obtain the dwarf winter wheat. The method provided by the invention has the beneficial effects that according to the hybridizing and breeding method of the dwarf winter wheat, the bred winter wheat is named as Yinong 61 wheat variety which has the advantages of late seeding time, quick mature, tiller productive in spring, high percentage of earbearing tiller, dwarf, more spikes, more grains, high thousand seed weight, excellent weak gluten, large leaf area, high photosynthetic efficiency and strong cold resistance and lodging resistance.

Description

technical field [0001] The invention relates to a wheat hybrid breeding method, in particular to a dwarf winter wheat hybrid breeding method. Background technique [0002] Wheat is the main food crop, with a large planting area, high cost of fertilizer and seeds, and low grain yield. In the 1960s, wheat breeding experts from the International Corn and Wheat Breeding Center used a pair of dwarf genes Rht1 and Rht2 carried by the Japanese dwarf wheat variety Norin No. 10 as hybrid parents and Mexican local high-stalk wheat varieties with good yield hybridize. A batch of short-stalked and high-yield wheat varieties were selected and popularized in the offspring of the hybrid, and the wheat yield was greatly improved, which played a positive role in solving the problem of increasing population and food shortage, and was called the first green revolution. The dwarf wheat plant is short, and after a large amount of fertilization, it will not fall down in a storm, ensuring high y...

AI Technical Summary

Problems solved by technology

In the long-term evolution, the excellent genes of three wheat varieties have been fused, and the advantages of the first generation of hybridization have been utilized. No key breakthroughs have been made, and production has not been fully promoted. The output of high-yield and ultra-high-yield wheat is 500kg-600kg / m 2

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