【摘要】 运用灰色系统理论中的灰色关联度法对20个燕麦Avena sativa品种(系)的抗倒伏性进行综合评价,同时利用综合评价值与各指标进行最优回归方程模型的拟合。结果表明,青永久343的综合评价值最高,抗倒伏性最好;甘肃黄燕麦的综合评价值最低,最易倒伏,这与燕麦田间倒伏调查结果基本吻合。各指标中穗长倒数、株高构成指数、弹力和2~3茎节鲜质量4个指标对燕麦抗倒伏性有显著影响。更多还原

【Abstract】 Grey systematic theory was used to evaluate lodging resistance of 20 oat(Avena sativa L.) varieties.The results of integrated evaluation showed that Qingyongjiu343 got the highest value and was the most lodging-resistant,while the local variety Huangyanmai gave the poorest performance,which was consistent with the field observations.Among 8 traits observed in the evaluation system,four including panicle-length reciprocal,height components,flexibility,2nd-3rd node fresh weight affected lodging resistance significantly.更多还原