爆裂玉米种质资源的果穗性状和膨爆特性多样性及相关性分析  

Diversity and Correlation Coefficient Analysis on Ear and Explosion Characters of Popcorn Germplasm Resources

作　　者：王慧[1] 于典司[1] 关媛[1] 卫季辉 孙萍东 顾炜 施标[1] 林金元[1] 卢有林[1] 郑洪建[1] WANG Hui;YU Dian-si;GUAN Yuan;WEI Ji-hui;SUN Ping-dong;GU Wei;SHI Biao;LIN Jin-yuan;LU You-lin;ZHENG Hong-jian(Crop Breeding and Cultivation Research Institute/CIMMYT-China Specialty Maize Research Center,Shanghai 201403,China)

机构地区：[1]上海市农业科学院作物育种栽培研究所/CIMMYT-中国特用玉米研究中心

出　　处：《玉米科学》2019年第6期19-24,共6页Journal of Maize Sciences

基　　金：国家自然基金项目(31801364);国家重点研发计划项目(2018YFD0100106);上海市农委基础项目[沪农科攻字(2015)第6-1-2号];上海市鲜食玉米产业技术体系[沪农科产字(2017)第10号]

摘　　要：研究分析50份不同爆裂玉米种质材料的果穗性状及其膨爆特性。结果表明,果穗性状中秃尖长的变异系数为68.88%;果穗穗长、行数、行粒数、穗粗、百粒重呈正态分布,果穗秃尖长呈偏态分布。膨爆特性中膨爆倍数的变异系数为32.86%,膨爆倍数呈正态分布,膨爆率呈偏态分布,表明爆裂玉米种质材料间主要性状具有较为丰富的多样性。膨爆特性、果穗性状间的相关性分析表明,膨爆倍数与膨爆率呈显著正相关;膨爆倍数与穗长、穗行数、行粒数、穗粗呈正相关,与秃尖长、百粒重呈负相关;膨爆率与行粒数、穗粗呈显著正相关,与穗长、秃尖长、行数、百粒重呈正相关。The ear characters and popping characters of 50 different popcorn germplasm were analyzed. The results showed that the variation coefficient of the ears’ bald tip lengths was 68.88%, and the ear lengths, rows per ear,seeds per row, ear diameter and 100-grain weight presented a normal distribution, while the bald tip lengths a skew distribution;popping volume was 32.86%, presented a normal distribution, popping rate presented a skew distribution. Themain charactersofpopcorn germplasm had abundantdiversity,which washelpfulforscreeningand comparison of good varieties and breeding and improvement of new varieties. Correlation analysis between popping characteristics and ear traits showed that the popping volume was positively correlated with the popping rate, and the popping volume was positively correlated with the ear length, rows per ear, seeds per row and ear diameter;and the negative correlation with the bald length and 100-grain weight. The popping rate was significantly positively correlated withseedsperrow andtheeardiameter,andpositivelyrelatedtotheearlength,baldness,rowsand 100-grainweight.

关 键 词：爆裂玉米 果穗性状 膨爆倍数 膨爆率 多样性 相关性 

分 类 号：S513.024[农业科学—作物学]