两系杂交粳稻产量性状优势形成分析

采用程氏指数对两系杂交组合亲本及其杂种F1进行分类,对杂种F1产量性状与亲本及杂种F1程氏指数,杂种F1产量性状与父本产量性状进行相关分析。结果表明,偏粳×粳、偏粳×偏粳的组合杂种F1为偏粳类型。杂种F1每穗总粒数表现与双亲程氏指数差呈显著正相关,同时也受到父本性状值的影响。

Analysis of forming of advantage of yield character of japonica rice crossed by two strains

Uses Chengshi Index to sort parents of crossbreed team by two cross strains on its crossbreed F1.Makes interrelated analysis of yield characteristics of crossbreed F1 and parent and Chengshi Index of crossbreed F1,yield characteristic of crossbreed F1 and yield characteristic of father.The result shows,the crossbreed F1 of the team by partial japonica ×japonica,partial japonica×partial japonica is partial japonica.The total number of grains per ear of crossbreed F1 makes notable positive mutuality with the difference of Chengshi Indexes between parents.And affected by the value of father characteristic.