| 摘要: |
| 采用不完全双列杂交法,研究了黄瓜八个亲本系所配十六个组合的主要数量性状,对配合力及其相应的基因型效应、遗传力进行了估算分析。试验表明:不同亲本间各性状的配合力有差异;早熟性以非加性遗传为主,狭义遗传力较低,总产量、雌花节率以加性遗传为主;群体雌花开放期主要取决于基因型。总产量,雌花节率、瓜条发育速度、瓜条长度的变异受环境影响较大,杂种优势育种对早熟性比丰产性更重要。 |
| 关键词: 黄瓜,不完全双列杂交,配合力,基因型效应,遗传力 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| THE COMBINING ABILITY OF SEVERAL QUANTITATIVE CHARACTERS OF CUCUMBER SELFBRED PARENT LINES AND THEIR INHERITANCE ANALYSIS |
|
Cui Hongwen Deng Junjun
|
| Abstract: |
| The main quantitative characters of 16 hybrids crossed with their parents were studied using incomplete biseral cross.The combining ability,hereditary effects and heritability were estimated.The experimental results showed that the combining ability was different among characters of different parents.Early maturity of cucumber was controlled by nonadditive effect.Its narrow sense heritability was low,but the additive heritary was the main in total yield and the percentage of female flowers.The female flowering period of the population depended chiefly on the genotypes.Total yields,the percentage of female flowers,speed of fruit growth and development and the variations in ihe length of fruits are greatly affected by the environment.The heterosis of early maturity is more important than the yields in heterosis breeding in cucumber.Quantitative characters are closely related to breeding.Studying the combining ability of major quantitative characters,hereditary effects and gene functions of cucumber parent selfbred lines will provide scientific bases for hybrid vigor matching,selection of quantitative characters and progress of hybrid offsprings. |
| Key words: cucumber,incomplee biseratl cross,combining ability,hereditary effect,heritability |
