不同水稻品种(系)稻米品质性状分析

1、医一论文发袤专家一J中国黠斛网fwww.qikanwang. nel不同水稻品种（系）稻米品质性状分析摘要：为了探讨不同水稻品种（系）稻米品质差异，改良稻米品 质，以吉林省近年育成的水稻品种（系）为试验材料，进行了品种 类型间的比较研究。结果表明，糙米率与精米率呈极显著正相关（1=0.9 6 8* ） ;长宽比与整精米率、粒长呈显著正相关（r=0.6 4 3*、r = 0.699*）;垩白粒率与垩白度呈极显著正相关（r=0.8 6 9* ）。垩白率、垩白度、整精米率、直链淀粉及胶稠度为影响稻米品质的主要因子，其对稻米品质的累积贡献 率为86.9 7 7%,应重视垩白粒率、垩白度和碾磨品质的关系

2、,以达到有效地改善稻米品质的目的。关键词：水稻；品质；主成分分析character analysis on grain quality of differentvarietiesof jap onica ricemeng weirenl,quan chengzhel,liu fangming2,quan dongxingl,jin chenghail,wu zhanwenl, zhouguang chunl(l.jilin academy of agricultu ral sciences, gongzhuling l36l 0 0,jilin,china;2. the college of

3、life science,jiamusi university, jiamusi l5-论文发表专家- 趣|中国黠斛网.q i kanwang ,nel4 0 0 7,heilongjiang,china)abstract:in order to discusst he differenceof grain qualityof differentvarietiesof japo nicarice and improve the grainquality,the study conductedacomparativestudiesamong var ieties bred in recent y

4、ears.th e resultsshowed that the posit ive correlationwas founded be tween brown rice rate and polis hed rice rate(r = 0.968*) , betwee n length-widthratio and mille d rice rate (r = 0.643*) , betweenl(ength-widthratio and lengthr = 0.6 9 9*) , also between chalkyk ernel percentageand chalkines s(r

5、= 0.869*) . the chalky kernelP ercentage,chalkiness,milledr ice rate,amylose and gel consi stency were principalfactorsinflecting grain quality of rih论文发表专家一）中国学木覇刊网ww.qikanwang. nelc e , and their total accumulative contribution rate was 86. 977 %. i n conclusion, the p r i n c i p a1 factors infle

6、cting grain qua1 i t y o f rice were chalkiness, mi 1 1 e d rice rate, a m y 1 o s e and g e1 cons i stency. the correlation be tween chalky kernel percenta g e ,chalkiness and milled rice quality s h o u 1 d b e paid a t t e n t i on t o for improving grain q u a 1 i t y key words:j a p o n i c a rice; q u a 1i t y ; principal component a n a 1 ys i s水稻作为世界上最主要的粮食作物，品质的优劣直接影响其商品 价值和种植推广1。水稻育种逐步从以高产为主要目标转变为 优质、高产、多（高）抗并重2 o目前对水稻品质的研究主要 包括水稻品质育种3 6、品质的