| 西北干旱区杂草稻品质性状分析 |
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| 引用本文：陈 丽，王兴盛，孙建昌，马 静.西北干旱区杂草稻品质性状分析[J].西北农业学报,2018,27(12):1772~1779 |
| DOI:10.7606/j.issn.1004-1389.2018.12.009 |
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| 基金项目:宁夏农林科学院基础研究项目(NKYJ-16-02)；国家重点研发项目子课题（2016YFD0100101-16）；宁夏农林科学院青年基金项目(NKYQ-18-07)；宁夏水稻育种专项（2013NYYZ0302）。 |
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| 中文摘要:以西北干旱区收集的43份杂草稻为试验材料，综合分析杂草稻碾磨、外观、蒸煮食味和营养等主要品质特性。结果表明，西北干旱区杂草稻的整精米率、垩白度和垩白粒率性状变异较大，变异系数均超过20%；蛋白质、胶稠度和碱消值次之，变异系数为12%～20%；精米率、粒长、粒型（粒长/粒宽）、直链淀粉和粗脂肪变异较小；出糙率的变异系数最小为1.53%。杂草稻出糙率、精米率、整精米率、胶稠度和碱消值性状明显低于地方品种和选育品种；垩白粒率、垩白度、透明度、蛋白质和粗脂肪值明显较高；粒长、粒型(粒长/粒宽)和直链淀粉质量分数介于地方品种和选育品种之间。杂草稻品质性状间的相关性分析表明，直链淀粉质量分数与胶稠度呈极显著负相关，蛋白质质量分数与出糙率、精米率、整精米率呈极显著负相关，与胶稠度呈显著负相关，与粒长和粒型(长/宽)则呈极显著正相关，且蛋白质质量分数与其碾磨品质关系最为密切。可见，西北干旱区杂草稻的品质性状变异较大，遗传基础较宽，品质方面具有较大可利用的潜在优势。 |
| 中文关键词:西北 干旱区 杂草稻 品质性状 |
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| Analysis of Weedy Rice Quality Trait in Arid Area of Northwest China |
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| Abstract:43 weedy rices in the arid region of Northwest China as experimental materials,we analysed main quality characteristics of weedy rice’s milling,appearance,cooking,taste and nutrition.The results showed that the variances of weed rice’s milled rice rate,chalkiness degree and chalky grain rate were great,and the coefficients of variation was over 20% in arid area of Northwest China.The ratio of protein,gel consistency and alkali consumption,the coefficient of variation were between 12% and 20%.The variation of milled rice rate,grain length,grain shape(length/width),amylose and crude fat were slight.The the smallest variation coefficient of the roughness was 1.53%.Compared with quality traits of local varieties and breeding varieties,the weedy rice’s browning rate,milled rice rate,whole rice rate,gel consistency and alkali consumption level were significantly lower; chalkiness rate,chalkiness,transparency,protein and crude fat values were significantly higher; grain length,the ratio of grain length/width and the quality score of amylose ranged between local variety and breeding variety.The correlation analysis of the quality characters of weedy rice showed that the amylose quality score had significantly negative correlation with the gel consistency .The protein quality score had significantly nagative correlation with the roughness,polished rice rate and polished rice rate,and had significantly negative correlation with the consistency.It had significantly positive correlation with the grain length and grain type (length/width),and the protein quality score had closest relation with the grinding quality.The weedy rice variances of quality traits were great,genetic basis were wider ,and the available quality of potential advantages was great in the arid region of Northwest China. |
| keywords:Northwest Arid area Weedy rice Quality traits |
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