The Breeding Method of Shangmai 5226 for Dry Farming in Mountainous Areas

Abstract

The invention discloses a breeding method of Shangmai 5226, a dry-farming variety in mountainous areas. Shangmai 8928 is selected as the female parent, and 8788 is planted as the male parent for hybridization. The combination number is 97(5), and the offspring are treated by the pedigree method; 97(5)-22 -6-1 and 97(5)-22-6-2 are basically the same in traits and characteristics, weak winter resistance, plant height 85cm, white grains, good quality, disease resistance, drought and cold resistance, and good yellow fall. 97(5)-22-6-1 participated in the regional test, and multiplied and tested.

Description

technical field [0001] The invention relates to a method for breeding Shangmai 5226, an dry farming variety in mountainous areas, and belongs to the technical field of wheat breeding. Background technique [0002] In recent years, the gap in the world's total grain output has increased. According to statistics, the world's total wheat output in 2002-2003 was 568.72 million tons, and the global consumption was 597.81 million tons, an increase of 6 million tons over the previous year, with a gap of 31 million tons. my country's total wheat output from 2002 to 2003 was 89.29 million tons. In 2004 and 2005, the total wheat output increased by 6.32% and 5.04% respectively year-on-year, but the gap was still large. During the same period, the import volume of wheat reached 38.212 million tons. Therefore, the price of wheat increased year by year . In the high-end market of grain trade, the competition for high-quality wheat is fierce, and the export of high-quality wheat has been ...

AI Technical Summary

Problems solved by technology

[0005] Second, the disease is serious and the stress resistance is poor

The geographical environment of Shangluo area is complicated, and there are many types of microclimates. It is an area where wheat diseases occur frequently. Stripe rust and powdery mildew have occurred in many places, causing serious losses to wheat production. Moreover, the rainfall distribution during the wheat growing season is extremely unbalanced. In the early stage of wheat growth, there is less rainfall, and the drought damages the early development of wheat. The rainy weather in the harvest season is easy to cause lodging and germination on the ear of the grain, which seriously affects the improvement of yield and quality.

Therefore, the region has strict requirements on varieties, and it is difficult for foreign varieties to adapt to the climate of Shangluo. It is often difficult for fine varieties to show their unique characteristics of high yield and high quality in Shangluo.

[0006] The third is that the good breeding system is not perfect, and the varieties are mixed and degraded seriously

Due to the poor efficiency of conventional planting, the high cost of breeding good varieties, the serious problem of substituting grain for seeds, and the limited technical strength of seed management units, the variety often degenerates due to genetic drift and other reasons, making it difficult to develop the production capacity of the variety.

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