Effects of Lodging at Different Filling Stages on Rice Yield and Grain Quality

查看全文 作　　者：LANG You-[1]zhong;YANG Xiao-[1]dong;WANG Mei-[1]e;ZHU Qing-[1]sen

机构地区：[1]Key Laboratory of Crop Genetics and Physiology of Jiangsu Province,Yangzhou University

出　　处：《Rice science》索引2012年第19卷第4期,共5页

基　　金：supported by the Independent Innovation Program of Agricultural Science and Technology in Jiangsu Province,China (Grant No.CX(10)226) 摘　　要：The effects of lodging of rice plants from 20 d after full heading to maturity on yield and grain quality were investigated with a hybrid rice combination Liangyoupeijiu and a japonica rice cultivar CY-6.The results showed that,except for brown rice rate,almost all parameters for yield and grain quality including ratio of grain length to grain width,gelatinization temperature and gel consistency,were significantly influenced by lodging and thus deteriorated.Regression analysis suggested that,lodging one day earlier at the grain-filling stage could cause 2.66% to 2.71% of yield loss,1.8 to 2.6 percentage points decrease of seed-setting rate,0.26 to 0.32 g reduction of 1000-grain weight,0.097 to 0.155 percentage point decline of milled rice rate,as well as 0.13 to 0.27 percentage point increase of chalky grain rate,and 0.021 to 0.024 percentage point rise of protein content,and subsequently lower the eating quality. 关键词：水稻产量稻米品质子粒灌浆住宿蛋白质含量粮食质量粳稻品种两优培九

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Effects of Lodging at Different Filling Stages on Rice Yield and Grain Quality

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