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Production of hybrid seeds of maize hybrid Liyu No.35

A hybrid, corn technology, applied in the fields of botanical equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the problems of poor adaptability, low seed production rate, high yield, lodging resistance and disease resistance , poor density and other problems

Inactive Publication Date: 2008-08-27
赵劲霖
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Problems solved by technology

[0005] The Huang-Huai-Hai summer corn area is the main corn producing area in my country, with high planting density. The varieties currently being promoted and applied are relatively poor in high yield, lodging resistance, disease resistance, and density tolerance, with low seed yield and poor adaptability.

Method used

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  • Production of hybrid seeds of maize hybrid Liyu No.35

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Embodiment Construction

[0019] The present invention uses the inbred line L5895 as the female parent and the inbred line 912 as the male parent to prepare a hybrid Liyu 35. The parental inbred line L5895 was carefully selected and bred by Zheng 58×Mo 17 crossing, using Zheng 58 as the recurrent parent for 3 generations, and then selfing for 5 generations. The male parent of the inbred line 912 was carefully selected and bred from the 6th generation of Chang 7-2 Fanzhongtian mutant strain. Its performance is: leaf sheath purple. The whole plant has 19-20 leaves. The plant type is compact, the plant height is about 247 cm, and the ear position is about 119 cm. The reproductive period is about 103 days. There are about 13 tassel branches, the anthers are yellow, and the filaments are light purple. The ear is cylindrical, the ear length is 17.4 cm, the number of ear rows is about 16, and the baldness is 0.4 cm. The grains are yellow, semi-pursatellite, and the cobs are white. The thousand-grain weig...

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Abstract

The invention discloses a seed production method of Liyu No. 35 Hybrid Maize. The method selects the inbred line L5895 as the female parent and the inbred line 912 as the male parent and makes up the Liyu No. 35 Hybrid Maize. The inbred line L5895 is obtained by combination crossbreeding of Zheng 58 * Mo 17, selecting Zheng 58 as the recurrent male parent and backcrossing for three generations and self-breeding for five generations. The inbred line male parent 912 is obtained by the seed selection of self-breeding for six generations of Chang 7-2 outcrossed variant. The method solves the problem of the stress tolerance of the medium-size spike variety and harvests the new species of the Liyu No. 35 Hybrid Maize characterized in high and stabilized production, high disease and knock-down resistance, proper maturation period and wide applicability.

Description

technical field [0001] The invention relates to a seed production method of Liyu 35 corn hybrid, and belongs to the technical field of crop heterosis utilization. Background technique [0002] In the past 20 years, great changes have taken place in the scientific research and production of corn in my country, and many new achievements, new experiences and new problems have emerged. [0003] Maize is the earliest crop to utilize heterosis in the world, and the utilization of heterosis is an important means to increase the yield of maize on a large scale. At present, corn has become the second largest crop in my country, second only to rice in terms of area and output. The annual sowing area is 23.33 million to 25.33 million mu, with a total output of 118 million tons, accounting for 22% and 25% of the grain crops respectively. Due to the prosperity of animal husbandry, corn is the main source of feed, and the country imports a considerable amount of commercial corn every ye...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H5/10
Inventor 赵劲霖
Owner 赵劲霖
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