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冬小麦基因型离体叶片失水与产量结构和植株性状的关系

DOI: 10.3321/j.issn:1000-7091.1998.03.002, PP. 5-10

Keywords: 冬小麦,基因型,离体叶片,失水速率,产量结构,植株性状

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Abstract:

根据4年的研究结果,分析了在冬小麦基因型产量和株高变异较大时,离体叶片失水速率(RWL)与产量构成和植株性状的关系。研究表明,RWL基因型间存在显着差异。在多数情况下,RWL与产量和千粒重呈负相关,与株高呈正相关。研究还发现基因型位次随失水时间的变化,有低失水,先快后慢,先慢后快和高失水4种类型。RWL与产量的负相关随失水时间延长而减弱。基因型差异以失水2~3h最为明显,且更具有较大生理意义,因此提出以离体2~3h为测定RWL的适宜时间。否定了国外多年延用6~9hRWL作为指标的结论。

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