Breeding of New Corn Hybrid-Zhengdan14

doi:10.3321/j.issn:1000-7091.2001.01.003

Abstract

Abstract: Zhengdan 14(Yuyu18)corn hybrid was examined and approved by four provinces and nation.Its planted area ranked first in Henan Province and fifth in the country.The accumulative total planted area reached 3330000 hectare in China.The hybrid yield was 17.6%higher than control in Henan regional tests and 12.4% higher than control in national regional tests,and both ranked first.The inclination of middle and top leaf is small.The growth of populations' leaf area is fast in the early stage,stable in the middle stage and slow in the late stage.The dry matter accumulation is fast and allotted rationally.The content of the leaf photosynthesis pigment,protein and soluble sugar and the activity of the leaf peroxidase are high.Its leaves are with strong function and slow senescence.The hybrid is resistant to several disease,lodging and drought.It has high quality and strong adaptablity,and grows well in the soils with high and medium fertility in most provinces of the country.

Key words: Corn, Zhengdan 14, Breeding

CLC Number:

S513.035.1

WANG Yibo, WANG Zhenhua, WANG Yongpu, ZHANG Xin, LU Lixing. Breeding of New Corn Hybrid-Zhengdan14[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2001, 16(1): 12-17. doi: 10.3321/j.issn:1000-7091.2001.01.003.

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