| 梯度减除颖花对水稻弱势粒稻米品质的影响 |
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| 引用本文： | 呼楠,吕文彦,高燕,邵国军.梯度减除颖花对水稻弱势粒稻米品质的影响[J].北方水稻,2011,41(1). |
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| 作者姓名： | 呼楠 吕文彦 高燕 邵国军 |
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| 作者单位： | 1. 沈阳农业大学农学院,沈阳,110161
2. 辽宁省农业科学院稻作研究所,沈阳,110101 |
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| 基金项目： | 北方粳稻遗传育种生理生态实验室开放项目(06-03); 辽宁省自然科学基金项目(20032092); 辽宁省教育厅科研基金(2009A637) |
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| 摘 要： | 通过梯度减除上部颖花(减库)处理,研究稻穗下部二次枝梗(弱势粒)籽粒外观和碾磨品质的变化,并分析了logistics方程模拟籽粒灌浆过程的有关参数与稻米品质的相关性,以明确籽粒自身活性对品质的影响。结果表明:自然状态下,稻穗下部弱势粒较各部位强势粒在粒长、粒宽、粒厚、糙米率、精米率及整精米率等性状存在显著差异;仅保留稻穗下部枝梗能使弱势粒的粒长、粒宽、糙米率、精米率、整精米率得到显著改良,但弱势粒的有关性状基本没有达到强势粒水平;简单相关分析表明,粒形与灌浆时间极显著负相关,与灌浆速率极显著正相关,碾磨品质与灌浆中、后期持续期及整个灌浆持续期显著负相关,与灌浆速率相关不显著。可见,稻穗下部弱势粒稻米品质较差与营养物质供应无必然联系,籽粒内部固有的生理活性可能是导致粒间品质差异的主要原因。
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| 关 键 词： | 水稻 库强度 弱势粒 稻米品质 |
Effect of Gradient-reducing Spikelet on Rice Qualities of Inferior Grain |
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| HU Nan,LV Wen-Yan,GAO Yan,SHAO Guo-Jun.Effect of Gradient-reducing Spikelet on Rice Qualities of Inferior Grain[J].Reclaiming and Rice Cultivation,2011,41(1). |
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| Authors: | HU Nan LV Wen-Yan GAO Yan SHAO Guo-Jun |
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| Institution: | HU Nan1,LV Wen-Yan1,GAO Yan1,SHAO Guo-Jun2 (1 College of Agronomy,Shenyang Agricultural University,Shenyang 110161,China,2 Rice Research Institute,Liaoning Academy of Agricultural Sciences,Shenyang 110101,China) |
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| Abstract: | The experiment was conducted to study the change of appearance and milling qualities of inferior grain,which is located on the secondary branches of lower part ear,by gradient-reducing spikelet(reducing sink),and analysis the correlation between rice qualities and filling parameters during the progress of grain filling,to affirming the effect of grain itself activity on rice qualities.The result showed: in a natural state,there is a significantly difference between inferior grain of lower part ear and other... |
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| Keywords: | Rice Sink-strength Inferior grain Rice qualities |
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