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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (13): 17-22.doi: 10.11924/j.issn.1000-6850.casb19020053

Special Issue: 油料作物 园艺

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High-yield Combination of Hybrid Rapeseed: Grey Relational Analysis of Yield and Agronomic Characters

Li Yanlan1, Yang Jincheng1(), Li Xiang1, Liu Jianjian1, Wang Jingqiao2, An Zhengyun1, Cai Shujiang1, Hu Xinzhou1, Li Hongyan1   

  1. 1 Yuxi Academy of Agricultural Sciences, Yuxi Yunnan 653100
    2 Economic Crop Research Institute of Yunnan Academy of Agricultural Sciences, Kunming 650205
  • Received:2019-02-25 Revised:2019-05-30 Online:2020-05-05 Published:2020-04-16
  • Contact: Jincheng Yang E-mail:1953493929@qq.com

Abstract:

To study the effect of agronomic characters on rapeseed yield when high yield is obtained by heterosis combination in rapeseed breeding, 11 agronomic characters of 15 hybrid high-yield combination materials are analyzed by grey relational degree analysis method. The results showed that the order of correlation from close to far between yield and main agronomic characters of hybrid high-yield combination rapeseed was 1000-grain weight> planting density > growth period> number of effective siliqua in the main inflorescence> main inflorescence valid length> pod density> average number of pods and grains> plant height> number of effective branches at one time> number of effective siliqua per plant> height of branches. In the high-yield breeding of hybrid combination rapeseed in Yuxi of Yunnan, under the premise of suitable close planting, the sowing density could be moderately increased, and early sowing could be conducted. When the plant type is appropriate, it is necessary to strengthen the breeding of several characters such as 1000-grain weight, the number of effective siliqua in the main inflorescence, and the effective length of the main inflorescence.

Key words: hybrid rape, high-yield combination, yield, agronomic characters, grey relational analysis

CLC Number: