作物学报2011，Vol.37Issue(3)：559-562,4.DOI:10.3724/SP.J.1006.2011.00559
大豆重组自交家系群体动态株高及其相对生长速率与产量的关系
Relationship of Dynamic Plant Height and Its Relative Growth Rate with Yield Using Recombinant Inbred Lines of Soybean
摘要
Abstract
Selection for increasing yield potential is consistantly the main goal of soybean breeding. Plant height influences yield with uncertainty in soybean. A population of 212 recombinant inbred lines (RIL) was used to analyze the correlation of dynamic plant height and its relative growth rate with yield across two-year field experiments. The results were as followed: (1) The range of yield and plant height was 1 000-5 000 kg ha-1, 38-128 cm respectively, which indicated the sample in the study had a good representativeness. Significant differences between plant height and its relative growth rate at the same developmental stages were observed among the RILs. (2) Yield was significantly and positively correlated with plant height at 20 days after emergence, and the correlation increased with the growing stages and the highest correlation occurred when plant height culminated. Yield was positively correlated with relative growth rate in plant height at earlier growth stages and negatively correlated at later stages,indicating that faster growth in plant height at later stage would not be beneficial to higher yield. (3) A negative exponential regression mode was observed in the relationship between yield and plant height. Yield increased steeply when plant height was less than 80 cm and this trend would slow down when plant height was over 80 cm. We found yields reached 4 000 kg ha-1 when plant heights were 70-90 cm. The merits and demerits of phenotypic analysis using RIL and how to select plant height in soybean breeding were discussed.关键词
大豆/动态株高/相对生长速率/产量/相关引用本文复制引用
黄中文,王伟,徐新娟,文自翔,李海朝,李金英,卢为国..大豆重组自交家系群体动态株高及其相对生长速率与产量的关系[J].作物学报,2011,37(3):559-562,4.基金项目
本研究由河南科技学院博士启动基金项目(2008005),国家重点基础研究发展计划(973计划)项目(2009CB118404),国家自然科学基金项目(30771360.30971818)和郑州市创新型科技人才队伍建设工程项目(096SYJH14103)资助. （2008005）
