ZHOU Rong,WANG Xian-zhi,ZHANG Xiao-juan,et al.EVALUATION METHED OF LODGING RESISTANCE IN SOYBEAN GERMPLASM[J].Soybean Science,2007,26(04):484-489.[doi:10.3969/j.issn.1000-9841.2007.04.007]
大豆种质倒伏抗性评价方法研究
- Title:
- EVALUATION METHED OF LODGING RESISTANCE IN SOYBEAN GERMPLASM
- 文章编号:
- 1000-9841(2007)04-0484-06
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 取30份南方春大豆种质为材料,以测定植株茎秆性状和根系性状建立4类不同构成因子的抗倒指数。分析表明,实际倒伏程度与抗倒指数呈极显著负相关,尤其与结荚期多因子抗倒指数[(根重×茎秆强度)/(株高×茎重×分枝数)×100]相关性最为密切。茎秆强度对抗倒指数的直接效应最大,而茎重则具有较大的负效应。以抗倒指数作为综合指标评价大豆种质根倒伏抗性具有较高的准确性。
- Abstract:
- Lodging was the major constraint of soybean production.The objective of this study was to achieve evaluation method in terms of root lodging resistance of soybean cultivars.Four index of lodging resistance (ILR) made up of different components were designed based on the mechanics as a comprehensive index to determine lodging resistance of 30 spring soybean cultivars.The ILR had significant negative correlation with percentage of prostrate plant.And the ILR test at podding stage with more components,(root weight stem intension) / (plant height top weight branch number)×100,was closely related to percentage of prostrate plant.The stem intension had positive effect on the ILR,but the top weight had the negative effect.The test results showed that the ILR might be used as an indicator to evaluate the lodging resistance of soybean objectively and accurately.
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备注/Memo
基金项目:国家自然科学基金项目(30671313)