摘要
为探讨苹果实生苗叶片叶绿素含量的遗传规律,以7个苹果品种及其杂交组合的F1代为试材,对5个F1代及亲本叶片叶绿素SPAD值进行分析。结果表明,不同品种的叶片叶绿素含量差异较大,苹果叶片叶绿素含量是受多基因控制的数量性状,F1代叶绿素含量与亲本比较有降低的趋势,后代分离不广泛,其遗传主要表现为基因的加性效应,并存在较小的非加性效应。在5个组合中,只有摩里士×藤牧组合具有正向的杂种优势。叶绿素含量杂种优势因作物类型、品种和测定时期不同而结果各异。杂种能否表现优势,亲本的选择和选配十分重要。
To elucidate genetic trend of chlorophyll content in leaves of apple seedlings, seven apple cultivars and hybrid progenies of different cross combinations were used as test materials, and leaf chlorophyll SPAD value of five hybrid progenies and their parents were analyzed. The results showed that chlorophyll content varied greatly among different varieties, the chlorophyll content in apple leav es was a polygenecontrolled quantitative trait. Compared to the parents, the progenies showed a de creasing tendency in the chlorophyll content. Segregation of progenies was not widely, their inherit ance showed mainly additive genetic effect and weak nonadditive effect. The Molies Delicious X Mato was the only one among of the five cross combinations that showed positive heterosis. The studies suggested that heterosis of chlorophyll content results from the different crop ecotypes, varieties and testing periods, parental choice and matching were very important to heterosis performance.
出处
《西北农业学报》
CAS
CSCD
北大核心
2013年第12期91-95,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家苹果产业技术体系晚熟育种岗位专家项目(CARS-28)资助
