Corn crossbreeding method

Abstract

The invention provides a corn crossbreeding method. The breeding steps of the corn crossbreeding method comprise male parent breeding, female parent breeding and fusion breeding; the corn crossbreeding method is characterized in that the male parent breeding takes LXO3-2 and PH4CV as base materials, and the female parent breeding takes Zheng 58 and PH6WC as base materials; the corn crossbreeding method provided by the invention is a crossbreeding method of corn seeds which are high and stable in breeding yield, good in resistance, and drought and barren-resistant.

Description

technical field [0001] The invention relates to the field of agricultural breeding, in particular to a corn hybrid breeding method. Background technique [0002] Corn planting has a long history and is an important crop in the history of human agricultural development. Corn has been planted in my country for 470 years. At present, the sown area of ​​corn in my country is about 300 million mu, second only to rice and wheat, and it is also an important part of people's staple food. [0003] The reality in China is that less than 7% of the world's total arable land is used to raise more than 20% of the world's population. The solution to this serious problem is inseparable from the continuous improvement of hybrid breeding technology and planting methods. Since Yuan Longping's research on the first generation of hybrid rice, China has opened the era of hybrid breeding technology. As for corn, which is the third most planted crop in China, through the efforts of generations of...

AI Technical Summary

Problems solved by technology

[0005] 1. The yield stability of corn seeds is poor, and the yield is easily affected by the seasonal environment;

[0006] 2. The drought resistance and disease resistance of corn species need to be improved;

[0007] 3. Corn species have poor adaptability to barren land, and the yield is easily affected, etc.