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不同品质类型冬小麦气冠温差的差异及其与产量性状的关系

DOI: 10.7668/hbnxb.2010.03.040, PP. 190-195

Keywords: 冬小麦,气冠温差,强筋类型,中筋类型,产量性状

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Abstract:

研究不同品质类型冬小麦气冠温差(CTD)的差异,探讨气冠温差与产量性状的关系,对高产品种(系)选育具有重要的应用价值。在灌溉条件下,选用28个强筋型和27个中筋型冬小麦品种(系),分别对抽穗期、开花期、花后7d、花后14d、花后21d和花后28d的气冠温差进行了测定。结果表明,强筋型与中筋型冬小麦品种间的CTD在各个测量时期的差异均达极显著水平,中筋品种花后21d的CTD与产量和千粒重均呈极显著正相关。CTD对冬小麦产量影响,主要通过粒重途径实现的。强筋型品种与中筋型品种的3个主成分累积贡献率分别为51.72%和63.45%,其中,花后21d的CTD分别在强筋品种第2主成分和中筋品种第1主成分表现CTD差异越大,产量越高,贡献率分别为16.91%和36.95%。根据因子得分,筛选出CTD综合表现差异大,籽粒产量高的强筋品种(系)有济南17、鲁0540258、鲁0540261、鲁056479和鲁0540252;中筋品种(系)有济麦22、鲁055359、鲁055282、鲁0540319和鲁055293。

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