| 遮光对超级稻沈农014主要稻米品质的影响 |
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| 引用本文： | 王百灵,张文忠,于红卫,商全玉.遮光对超级稻沈农014主要稻米品质的影响[J].北方水稻,2009,39(4):14-16. |
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| 作者姓名： | 王百灵 张文忠 于红卫 商全玉 |
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| 作者单位： | 沈阳农业大学水稻研究所,沈阳,110161 |
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| 基金项目： | 国家科技支撑计划，农业部超级稻品种选育与示范项目 |
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| 摘 要： | 以沈农014为试材,通过齐穗期遮光处理,塑造不同叶片光合产物供应能力,研究同化物供应能力对产量及主要稻米品质的影响。结果表明,遮光处理后穗颖花数普遍提高;穗粒重普遍下降,遮光程度为90%时,一次枝梗、二次枝梗的千粒重和结实率都降低,遮光程度为70%和40%时,一次枝梗、二次枝梗的千粒重和结实率都比对照提高;当遮光程度分别为70%、40%时,糙米率、精米率和整精米率普遍提高,而遮光90%时,糙米率、精米率和整精米率则都下降;随着稻株光合能力的下降,垩白粒率和垩白度增加,遮光程度为90%时,垩白粒率和垩白度达到最大值;所有遮光处理的蛋白质含量和脂肪酸含量都提高,直链淀粉和食味值则都下降。
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| 关 键 词： | 水稻 遮光 稻米品质 |
Effect of Shading on Major Qualities of Rice |
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| WANG Bai-ling,ZHANG Wen-zhong,YU Hong-wei,SHANG Quan-yu.Effect of Shading on Major Qualities of Rice[J].Reclaiming and Rice Cultivation,2009,39(4):14-16. |
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| Authors: | WANG Bai-ling ZHANG Wen-zhong YU Hong-wei SHANG Quan-yu |
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| Abstract: | Shennong 014,a super rice variety,was treated with shading at full heading stage to study the effect of assimilate-supply capacity on major qualities of rice.The results showed that the shading increased flowers per panicle significantly and decreased grain weight.When treated with 90% shading,the 1000-grian weight and kernel setting rate on primary and secondary rachis-branches decreased.When treated with 70% and 40% shading,the 1000-grian weight and kernel setting rate on primary and secondary rachis-branches were more than those of control.The brown rice rate,polished rice rate and head rice rate increased generally when treated with 70% and 40% shading,and decreased when treated with 90% shading.When shaded by 90%,the chalky grain rate and chalkiness degree reached the highest values.The protein and fat content increased and amylase content decreased when treated by shading. |
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| Keywords: | Rice Shading Quality of rice |
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