Genetic effects and heterosis analysis on yield-related traits of CMS-FA hybrid rice

• Published in: Chung-kuo nung yeh kʿo hsüeh Vol. 43; no. 2
• Main Authors: Wang Hongfei, Fujian Agriculture and Forestry University, Fuzhou(China), Wang Naiyuan, Fujian Agriculture and Forestry University, Fuzhou(China), Li Yu, Fujian Agriculture and Forestry University, Fuzhou(China)
• Format: Journal Article
• Language: Chinese
• Published: 01.01.2010
• Subjects: ARROZ; HETEROSIS; HIBRIDOS SOMATICOS; http://www.fao.org/aos/agrovoc#c_27609; http://www.fao.org/aos/agrovoc#c_3705; http://www.fao.org/aos/agrovoc#c_6599; HYBRIDE SOMATIQUE; RICE; RIZ; SOMATIC HYBRIDS; VIGOR HIBRIDO; VIGUEUR HYBRIDE
• ISSN: 0578-1752

【目的】研究水稻新质源（CMS-FA）不育系和恢复系的产量相关性状遗传效应和杂种优势水平,评价新型细胞质源杂交稻亲本的育种潜力。【方法】采用不完全双列杂交设计,以新质源（CMS-FA）杂交稻系统的5个不育系为母本,5个恢复系为父本配制25个杂交组合,种植亲本和F1获得产量相关性状的试验数据。利用加性-显性遗传模型和MINQUE（1）法对10个产量相关性状遗传方差分量比率、遗传率、亲本加性效应和组合显性效应以及杂种优势进行剖析。【结果】新质源杂交稻产量相关性状同时受加性效应和显性效应的控制,单株穗数、每穗总粒数、每穗实粒数、结实率、千粒重、剑叶长和生育期等性状以加性效应占主导,单株产量、株高和穗长等性状则以显性效应控制为主;狭义遗传率以千粒重表现最高,生育期次之,单株产量最低;加性效应最好的不育系是金农2A,恢复系是金恢3号和金恢1号;显性效应最强的4个组合为金农2A×金恢5号、金农2A×金恢2号、金农4A×金恢5号和金农5A×金恢5号;单株产量、株高、穗长3个产量相关性状F1具有很强的群体平均优势（7.351%―16.330%）和群体超亲优势（4.233%―10.507%）,强优势组合杂种优势可达10.307%―49.462%。【结论】供试不育系以金农2A较好,恢复系以金恢3号和金恢1号最好,金恢5号在配制生育期较短的杂交稻高产组合中是一个很好的亲本。 【Objective】 This study aimed at detecting the genetic effects and heterosis level of yield-related traits of CMS-FA sterile lines and restorers as well as the breeding potential of CMS-FA hybrid rice parents. 【Method】 By incomplete diallel cross design, using five CMS-FA sterile lines as female parents and five corresponding restorers as male parents, twenty-five crosses were made. The parents and F1 generations were planted to obtain