RATE AND DURATION OF GRAIN FILLING IN DURUM-WHEAT CULTIVARS
RATE AND DURATION OF GRAIN FILLING IN DURUM-WHEAT CULTIVARS
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DOI：
10.2135/cropsci1982.0011183x002200020033x
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发表时间：
1982-01-01
期刊：
影响因子：
2.3
通讯作者：
BAKER, RJ
中科院分区：
文献类型：
--
作者：
GEBEYEHOU, G;KNOTT, DR;BAKER, RJ
11个硬质小麦品种(T.turgiumL.)在旱作和灌溉条件下种植，以确定籽粒灌浆速率和持续时间是否存在差异，并研究它们与粒重的关系。用三次多项式描述了粒重与开花时间的关系。由拟合曲线得到了籽粒灌浆速率和灌浆持续时间。品种间籽粒灌浆速率、灌浆持续期和粒重差异显著。籽粒灌浆速率和灌浆持续时间与最终粒重呈正相关。籽粒灌浆速率与灌浆持续期之间的遗传关联性较小。结果表明，在不延长灌浆持续时间的情况下，可以同时提高灌浆速率和粒重。
Eleven cultivars of durum wheat (T. turgidum L.) were grown under rainfed and irrigated conditions in order to determine if differences in rate of grain filling and duration exist and to study their relationships with grain weight. A cubic polynomial was used to describe the relationship between grain weight and time from anthesis. Rate and duration of grain filling were obtained from the fitted curve. Cultivars differed significantly in rate of grain filling, duration of grain filling, and grain weight. Rate and duration of grain filling were positively associated with final grain weight. There appeared to be little genetic association between rate of grain filling and duration of grain filling. Results suggested that it should be possible to simultaneously improve rate of grain filling and grain weight without lengthening duration of grain filling.