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磷硼耦合胁迫对大豆生长和磷、硼吸收的影响及基因型差异

DOI: 10.7671/j.issn.1001-411X.2012.02.002, PP. 129-134

Keywords: 大豆,磷有效性,硼有效性,基因型差异

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Abstract:

以磷效率不同的5个大豆基因型为材料,通过水培试验研究磷、硼不同处理对大豆不同生育期植株生长和磷、硼吸收的影响及基因型差异.结果表明:磷、硼不同处理显著影响大豆生长,并且磷、硼对大豆生长的影响具有显著的交互作用.其中,磷有效性是影响大豆生长和硼吸收的重要因素.在相同硼水平下,增加磷有效性能显著提高各大豆基因型植株干质量、籽粒产量和单株磷硼积累量;在适量磷水平下,增加硼水平,能显著促进磷高效大豆基因型的生长和植株体内磷、硼的累积,但对磷低效品种则无显著影响.磷、硼对大豆生长的影响及其交互作用在成熟期表现更为明显,改善硼供应有利于提高磷高效大豆基因型的产量.

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