摘要
为了明确稻米外观品质与食味品质的关系,甄选合适的评价指标,为培育外观品质与食味品质综合优良的杂交籼稻品种提供理论参考,以8个不育系与25个恢复系配制的200个杂交籼稻组合为材料,采用简单相关和典型相关分析研究了稻米外观品质性状与食味品质性状的相关关系。结果表明,直链淀粉含量与粒宽、垩白度、垩白粒率呈显著正相关,与长宽比显著负相关;米饭食味综合评分与粒长、长宽比显著正相关,与粒宽显著负相关。典型相关分析得到相关系数达显著水平的两对典型相关变量,累计贡献值为91.329%。在第一对典型变线性组合构成中,U_(1)和V_(1)分别以长宽比、直链淀粉含量的权重较大;在第二对典型变线性组合构成中,U_(2)和V_(2)分别以粒长、食味综合评分的权重较大。
Defining the relationship between appearance quality and eating quality of rice and screening suitable traits,are important for breeding indica hybrid rice exhibiting excellent appearance quality and eating quality.Two hundreds indica hybrid rice combinations,crossed from 8 male sterile lines and 25 restorer lines were applied to study the relationship between appearance quality traits and eating quality traits by using simple correlation analysis and canonical correlation analysis.The results showed that amylose content was significantly positive correlation with grain width,chalkiness degree and chalky grain rate,and significantly negative correlation with length-width ratio.The comprehensive score of rice was significantly positive correlation with grain length and length-width ratio,but significantly negative correlation with grain width.Two pairs of canonical correlation variables with significant correlation coefficient were obtained by canonical correlation analysis,and the cumulative contribution value was 91.329%.The main components for the first pair of canonical variable linear combinations(U_(1) and V_(1))were length-width ratio and amylose content,respectively,and the main components for the second pair of canonical variable linear combinations(U_(2) and V_(2))were grain length and comprehensive score of rice,respectively.
作者
刘玮琦
肖丰
曾盖
肖应辉
罗丽华
LIU Weiqi;XIAO Feng;ZENG Gai;XIAO Yinghui;LUO Lihua(College of Agronomy,Hunan Agricultural University,Changsha 410128,China;Beidahuang Kenfeng Seed Industry Co.,Ltd.,Harbin 150090,China)
出处
《中国稻米》
北大核心
2022年第4期40-43,共4页
China Rice
基金
湖南省教育厅科学研究项目(18C0160)
国家重点研发计划项目(2016YFD0101100)。
关键词
杂交籼稻
外观品质
食味品质
典型相关
indica hybrid rice
appearance quality
eating quality
canonical correlation
