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棉花学报  2013 

棉纤维发育相关糖类物质转化与纤维产量形成的关系

DOI: 1002-7807(2013)02-0103-07, PP. 103-109

Keywords: 棉花,可溶性糖,蔗糖,纤维素,纤维干物质质量

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Abstract:

以生育期相近的2个棉花品种不同季节成铃的棉纤维为材料,研究棉纤维发育相关糖类物质转化、纤维素合成特征与棉纤维干物质质量形成的关系。结果表明随着开花结铃时间的推迟,棉纤维中可溶性糖和蔗糖的转化率有下降的趋势;可溶性糖和蔗糖转化率高的棉纤维,其纤维素累积最大速率较高,纤维干物质质量快速增长期历时长,有利于纤维干物质质量的增加。对于不同结铃时期的棉铃,棉纤维中蔗糖和纤维素均是通过调节可溶性总糖含量的变化来影响棉纤维干物质质量的增加。因此,棉纤维发育过程中可溶性糖类物质转化情况和纤维素合成特征的差异,是导致不同结铃时期单铃纤维干物质质量形成差异的直接原因。

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