摘要
选用改良的7个细胞质不育系和6个优良分枝性恢复系为亲本,采用NCII遗传交配设计配置42个杂交组合,对主要经济性状进行遗传及相关分析。结果表明,8个性状组合间差异极显著。叶片数、子仁含油率和子仁率的遗传变异主要由加性基因效应引起;株高、盘径和生育期遗传变异主要由非加性基因效应主导;单株产量和千粒重遗传变异由基因加性效应和非加性效应共同控制;亲本一般配合力(GCA)效应分析结果表明,LQ194A、LQ252A、Y109、R9706R、F15-1是优质、高产、多抗亲本。特殊配合力(SCA)效应和总配合力(TCA)效应分析结果筛选出LQ218×9706R、LQ28×Y109、LQ28×9706R、LQ178×Y109、LQ218×F15-1R、LQ28×F15-1R和LQ28×Y112等综合性状较好、遗传特点鲜明的优势组合;不育系对盘径和千粒重性状F1形成过程起主要作用。相关分析结果表明,千粒重与子仁率和单株产量分别表现显著负相关和极显著正相关。性状的表型相关和遗传相关接近一致。
Seven cytoplasmic male-sterile and six-branched male restorer lines of the improved oil sunflower were hybridized with 7 × 6 incomplete diallel,42 F1 hybrids were further used to estimate their general combining ability （GCA）、specific combining ability （SCA） and total combining ability （TCA） effects on main economic traits of oil Sunflower.The components of variance for combining ability revealed that mean squares were highly significant for all of the cross combinations,showed that the preponderance of additive gene action played the leading role in leaves per plant,kernel oil content and kernel rate,and indicated the preponderance of non-additive gene action was predominant in plant height,head diameter and growth duration,while seed yield per plant and 1 000-seed weight were attributed to additive gene action and non-additive gene action variance.GCA effects of the parents revealed that among the CMS LQ194A and LQ252A and among the restorers Y109,9706R,F15-1R were found to be promising parents.Based on significant SCA and TCA effects in components analysis,seven hybrids LQ218 ×9706R,LQ28 × Y109,LQ28 ×9706R,LQ178 × Y109,LQ218 × F15-1R,LQ28 × F15-1R and LQ28 × Y112 were identified as distinct for comprehensive traits and heredity characteristics.The CMS played a main role in the formation of the F0 traits of the head diameter and 1 000-seed weight.The result of correlation analysis indicated a significant negative correlation between 1 000-seed weight and kernel rate and a highly significant positive correlation between 1 000-seed weight and seed yield per plant.The phenotypic correlations and genotypic correlations were consistent.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2013年第5期515-523,共9页
Chinese Journal of Oil Crop Sciences
基金
现代农业产业技术体系建设专项资金(CARS-16)
关键词
不完全双列杂交
遗传
相关
配合力
向日葵
Incomplete diallel cross
Heredity
Correlation
Combining abilities
Sunflower
