湖南优质稻品种品质指标间的相关性分析  

Study on Correlation Among Quality Indexes of Fine Quality Rice Varieties in Hunan Province

作　　者：刘利成[1] 闵军[1] 刘三雄[1] 潘孝武[1] 黄海明[1] 黎用朝[1] 

机构地区：[1]湖南省农业科学院水稻研究所,长沙410125

出　　处：《中国稻米》2015年第1期30-33,共4页China Rice

基　　金：国家现代农业产业技术体系建设专项资金(nycytx-001);国家科技支撑计划课题粮食丰产工程第三期子课题"湘北提引与湘中库塘灌区水稻丰产节水节肥技术集成与示范"(2013BAD07B11-01);科技部农业成果转化项目"抗逆型优质稻新品种创香5号的示范与推广"(2012GB2D200312);湖南省农业财政资金项目"香型优质稻绿色安全生产技术推广"(201401)

摘　　要：对湖南省评选出的221个优质稻品种(组合)的主要米质指标进行了分析,探析了品质性状与评定等级的关系。结果表明,在一定范围内,稻米垩白粒率和垩白度越大,等级越低;而粒型长宽比和胶稠度越大,等级越高。湖南省二、三等优质品种的出糙率要求高于国家相应标准,垩白度和胶稠度要求低于国家相应标准。30年来,湖南省评选的优质稻品种米质有较大改善,但垩白粒率、垩白度仍普遍偏高。相关回归分析表明,稻米垩白粒率与垩白度呈极显著正相关,垩白粒率、垩白度与出糙率、精米率呈显著正相关,与粒型长宽比、整精米率、胶稠度、碱消值和食味值呈极显著负相关;粒型长宽比、整精米率与胶稠度、碱消值和食味值呈极显著正相关。The main quality indexes of 221 fine quality rice varieties in Hunan province in the past 30 years were analyzed, and the relationship between quality traits and grade was explored. The results showed that the chalky grain rate and chalkiness degree bigger, the quality grade was low, while quality grade rose with the increasing of milled rice length width ratio and gel consistency within a certain range. The brown rice rate requirement of the second and third class quality rice of Hunan Province is higher than the corre-sponding national standard, but the chalkiness degree and gel consistency requirements is lower than the national standard. The quali-ty of fine quality rice has greatly improved in recent 30 years in Hunan, but the chalky grain rate and chalkiness degree was generally higher. Correlation analysis showed that the chalky grain rate and chalkiness degree had a significantly positive correlation with brown rice rate and milled rice rate, and had significant negative correlation with milled rice length width ratio, head milled rice rate, gel consistency, alkali spreading value and taste. However, the milled rice length width ratio and head milled rice rate had a significant positive correlation with the gel consistency, alkali spreading value and taste.

关 键 词：优质稻 品质性状 相关分析 

分 类 号：S511[农业科学—作物学]