Breeding of New Corn Hybrid-GS Yuyu 11Wang Yibo Lu Lixing Wang Zhenhua

doi:10.3321/j.issn:1000-7091.1996.04.004

Abstract

Abstract: GS Yuyu 11 is a wide adapting corn hybrid trials conducted in Henan province during 1990-1991 showed that its average yield of 529 kg/mu was significantly higher than that of check,whose yield increased by 14.9% and was the maximum one.Results from trials conducted in five provinces during 1992-1993 also demonstrated that its average yield of 512.3 kg/mu was significantly higher than that of control corn Yedan 2,the yield increased by 15.7%,and was the maximum too.Demonstration studies in ten provinces indicated that the yield increments ranged from 8.7% to 47.5%.The maximum yield reached 900 1 kg/mu in one demonstration experiment in summer corn in Henan.The growth of populations′leaf area is fast in the early stage,stable in the middle stage and slow in the late stage.The level of nitrogen metabolism is high,dry matter accumulation is fast and allotted rationally.Therefore,the yield increase is siginificant.Yuyu 11 is resistant to several diseases and also resistant to lodging.The hybrid has good characters:high quality,medium maturity,wide range of suitable,high seed yield. It grows well in the soils with high and medium fertility in most provinces of the country.

Key words: Corn, GS Yuyu 11, High yield, High quality, Disease resistance

CLC Number:

S513.03

Wang Yibo, Lu Lixing, Wang Zhenhua, Wang Yongpu, Zhang Xin, Zhao Xipu, Cheng Xiangwen, Liu Guanghua,Zhang Shoulin, Chang Jianzhi. Breeding of New Corn Hybrid-GS Yuyu 11Wang Yibo Lu Lixing Wang Zhenhua[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1996, 11(4): 19-23. doi: 10.3321/j.issn:1000-7091.1996.04.004.

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