摘要
【目的】研究36份玉米杂交组合产量性状与茎秆力学倒伏综合评价,筛选出抗倒伏强的品种。【方法】以4份玉米自交系为测验种,9份玉米高代系为待测系,采用NCⅡ不完全双列杂交组配设计,对其茎秆性状及产量性状进行相关性、主成分、隶属函数、聚类分析,综合评价36个杂交组合的产量因子和茎秆性状。【结果】不同玉米杂交组合单株粒重与基部第3节穿刺强度、穗下第1节穿刺强度、基部第4节弯曲强度、穗下第1节弯曲强度和茎秆抗推力表现为极显著正相关,分别为0.451^(**)、0.588^(**)、0.459^(**)、0.422^(**)和0.490^(**);单株粒重与茎粗均表现为负相关;株高、行粒数、单株粒重与茎秆抗推力呈显著正相关关系,分别为0.388、0.387、0.490;穗高、秃尖、穗粗、轴粗、生育期与茎秆抗推力呈负相关关系;通过主成分分析,8个性状进行主成分分析,前5个主成分其累计贡献率达到了89.98%。【结论】结合隶属函数、贡献率计算权重、综合评价36个玉米杂交组合抗倒伏、宜机收能力的综合评价D值,并进行聚类分析,将其划分为三类,9个综合指标强的组合,14个综合指标弱的组合,13个综合指标中等的组合。
【Objective】In this study,36maize combinations were used to study yield characters and stem mechanical lodging,so as to select of lodging resistant varieties.【Methods】With four inbred lines were used as the test species and nine high-generation lines to be tested,NC II incomplete diallel cross design was used to perform comprehensively evaluation of the correlation and yield traits,principal component,membership function,yield factor and cluster analysis of the 36 yield components.【Results】Correlation analysis showed that grain weight per plant was significantly positively correlated with puncture strength at basal level 3,puncture strength at subear level 1,bending strength at basal level 4,bending strength at subear level 1 and stem thrust resistance,which were 0.451^(**),0.588^(**),0.459^(**),0.422^(**)and 0.490^(**),respectively.The grain weight per plant was negatively correlated with stem diameter.Plant height,grain number in rows and grain weight per plant were significantly positively correlated with stem thrust resistances,which were 0.388,0.387 and 0.490,respectively.Panicle position,bald tip,panicle diameter,shaft diameter and growth period were negatively correlated with stem thrust resistance.Through principal component analysis,eight traits were analyzed.The cumulative contribution rate of the first five principal components reached 89.98%.【Conclusion】Combined with membership function,contribution rate calculation weight and comprehensive evaluation D value of lodging resistance and adaptive recovery ability of 36 maize hybrid combinations,cluster analysis was carried out to divide them into three types,9 combinations with strong comprehensive indexes,14 combinations with weak comprehensive indexes and 13 combinations with moderate comprehensive indexes.This analysis method made the evaluation of hybrid combinations more intuitive and simplified,and laid a certain foundation for the comprehensive evaluation of lodging resistant adaptive hybrid combinations.
作者
杨明花
刘强
廖必勇
彭云承
布阿依夏木·那曼提
达吾来·杰克山
YANG Minghua;LIU Qiang;LIAO Biyong;PEN Yuncheng;Buayxam Namat;Dawulai Jiekeshan(Institute of Agricultural Sciences of Ili Prefecture,Yining Xinjiang 835000,China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2023年第4期832-840,共9页
Xinjiang Agricultural Sciences
基金
新疆维吾尔自治区天山青年基金项目(2019Q097)
“伊犁英才”玉米专家工作室项目。
关键词
玉米组合
不完全双列杂交
抗倒伏
主成分分析
综合评价
maize combination
incomplete diallel hybridization
lodging resistance
principal component analysis
comprehensive evaluation