摘要:
基于龙岩市1996～2007年连续12年在新罗、长汀、连城、上杭、武平和漳平6个不同生态条件的杂交晚稻联合区域试验数据资料,应用AMMI模型和相应统计分析方法,分析了产量、生育期、有效穗、株高、穗长、每穗粒数、每穗实粒数、结实率、千粒重等9个产量相关性状的基因型与环境互作效应。结果表明,基因型、环境及其互作(G×E)效应对考察的9个性状影响较大。其中,以基因型效应为主的性状为零;以环境效应为主的有产量、株高、有效穗、生育期、穗长和穗总粒数;以基因型与环境间互作效应为主的有结实率、穗实粒数和千粒重。生育期、千粒重、有效穗和穗长稳定性好;其次为结实率和株高;第三为穗实粒数和穗总粒数;最差为产量,受栽培环境及G×E互作效应影响较大。
Abstract:
Data collected from the joint regional trials on the late hybrid rice from 1996 to 2007 were analyzed to determine the correlation among yield-related traits and the rice genotype and environmental factors.The trials were held in 6 Longyan areas that constituted different ecological conditions-Xinluo,Changting,Liancheng,Shanghang,Wuping and Zhangping.Variations on 9 traits,including yield,growth period,effective ear,plant height,spikete length,total grains per spikete,filled grains per spikete,seed setting rate and 1000-grain weight,were measured.The data were subjected to AMMI and corresponding statistical analysis.The results indicated that genotype and genotype-environment interaction(G譋) had a significant effect on the 9 traits.Among the traits,(a) none was found to be controlled by genotype alone;(b) the yield,plant high,effective ear,growth period,spikete length and total grains per spikete were mainly controlled by the environmental factors;and(c) the seed setting rate,filled grains per spikete and 1000-grain weight were largely affected by genotype-environmental interaction.The growth period,1000-grain weight,effective ear and spikete length were most stable followed by the seed setting rate and plant height,and the filled grains per spikete and total grains per spikete,while the yield was least stable.The yield fluctuated as it was greatly affected by the cultivation environment and the interactions between genotype and environment.
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