Method for breading crossbreed with corn inbred lines

Abstract

The invention belongs to the filed of crop inheritance breeding, relating to a method for breading crossbreed with corn inbred lines. The Kuan-chung Plain in the northwest china has good geography advantage; however, the current per mu yield of corn crops is not extremely higher than the other areas in the whole country and stability is bad. The invention provides a method for breading crossbreed with corn inbred lines, in the year of 2003, inbred lines m3255 is taken as female parent in Hainan, foreign introduction lines 1*9801 is taken as male parent, according to the ratio of the female parent and the male parent being 3:1 or 4:1, cross-combined crossbreed with density being 4000-4500 seed / per mu is seeded; the leaf sheath of seedling has the color of dark violet, the cotyledon has a shape of elliptic type, the leaves have the color of dark green, the leaf edges have the color of green, and the leaves are upwards straightened; the crop is high to 245-250 cm, the seed is high to 85-90 cm, the crop shape is compact and the root system is developed; the seed has the shape of long cylinder, the spike stalk has the color of white, the ear length is 14-16 cm, the head progeny row is 12-14; and each row has 30-33 grains, the seed is strong and full. The method has the advantages of high yielding, stable yielding, strong disease resistance, wide applicability, strong stress resistance and good agriculture shape, and is fit for sowing corn in the spring and the winter at the northwest china and north China.

Description

1. Technical field [0001] The invention relates to the field of crop genetics and breeding in agricultural science and technology, in particular to a method for breeding hybrids using corn inbred lines. 2. Background technology [0002] my country is a large agricultural country. Among the food crops, corn ranks third, and its area and total output account for one-third. With the development of agriculture and animal husbandry, more and more corn is used as animal feed. Maize scientific research and production are of strategic significance to the sustainable and efficient development of agriculture and animal husbandry. Strengthening the research on new maize germplasm inbred lines and new hybrid preparation methods is of great practical significance to the development of the seed industry, feed industry, and food industry. The use of maize hybrids Technology and its industrialization play a decisive role in the adjustment of the planting industry structure, and the hybridiz...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for breeding hybrids using corn inbred lines, so as to solve the problems of low yield per mu and poor stability of corn crops in the northwest Guanzhong area. The single-cross varieties bred according to this method have high and stable yields , disease resistance, wide adaptability, strong stress resistance, excellent agronomic shape, suitable for spring and summer planting in the northwest Guanzhong area and planting in similar ecological areas

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