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大豆科学  2009 

冀南地区不同产量类型夏大豆根系性状的研究

DOI: 10.11861/j.issn.1000-9841.2009.04.0665, PP. 665-669

Keywords: 关夏大豆,产量类型,根系性状

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Abstract:

为探讨大豆产量与根系性状之间的关系,以在冀中南地区夏播表现相对高产和低产的15个大豆品种为材料,采用盆栽方法,在出苗后20d(苗期)、41d(开花结荚期)、65d(结荚鼓粒期)分别测定形态和生理性状。结果表明:根系鲜重、根总长、根体积和根系活力在不同取样时期两种产量类型间未达到显著差异,但两种产量类型间的根活形态指标及其增量在出苗后41d和65d均达到极显著差异,且与产量呈极显著正相关,特别是出苗后65d的根活形态指标及增量与产量的相关系数更大,该期的相应根系指标可作为大豆高产育种在根系方面的参考。根活形态增量与产量具有极显著正相关,可用于生育期差异较大的材料之间的研究,进而对大豆产量相关根系性状的遗传研究提供了可行性指标。

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