中国农学通报2026，Vol.42Issue(13)：6-11,6.
小麦籽粒产量、生物产量与收获指数的研究
Studies on Grain Yield,Biological Yield and Harvest Index of Wheat
摘要
Abstract
To clarify the genetic correlation and breeding application value among grain yield,biological yield and harvest index of wheat,this study systematically analyzed the relationships among grain yield,biological yield,and harvest index,as well as their genetic variation characteristics,using 30 stable inherited wheat lines.The results showed extremely significant differences among lines for biological yield,grain yield,and harvest index,with variation ranges of 8.79-13.4 g,4.35-5.90 g,and 0.407-0.539,respectively.Coefficient of variation(CV)analysis revealed the highest genetic variability in biological yield(CV=11.7%),whereas that in harvest index was relatively stable(CV=6.9%).Correlation analysis indicated a highly significant positive correlation between grain yield and biological yield(r=0.7904),indicating that increasing biological yield was the key to promoting grain yield growth.However,there was a highly significant negative correlation between biological yield and harvest index(r=-0.6949),reflecting the inherent trade-off between them.In conclusion,enhancing biological yield with synergistically optimizing harvest index is proposed as an effective strategy for future ultra-high-yield wheat breeding,under the current challenge of limited gains in harvest index.These findings provide a direct theoretical basis and practical guidance for breeders to precisely select lines with coordinated source-sink relationships and efficient assimilate partitioning,thereby holding significant value for shortening the breeding cycle and improving selection efficiency.关键词
小麦/籽粒产量/生物产量/收获指数Key words
wheat/grain yield/biological yield/harvest index分类
农业科技引用本文复制引用
田顺顺,李玉豪,王冲,林坤,郭凤芝,李思同,任自超,王应党,郭凌云,袁阳..小麦籽粒产量、生物产量与收获指数的研究[J].中国农学通报,2026,42(13):6-11,6.基金项目
山东省现代农业产业技术体系"小麦产业技术体系"(SDAIT-01-22) （SDAIT-01-22）
山东省重点研发计划"核心亲本精准鉴定与新品种培育及示范推广"(2024LZGC0010301). （2024LZGC0010301）
