棱角丝瓜霜霉病抗性遗传分析

Analysis of Resistance Heredity in Ridgegourd to Downy Mildew

摘要: 采用６×６完全双列杂交，按Ｈａｙｍａｎ模型对丝瓜霜霉抗性进行分析研究结果表明：抗性的一般配合力和特殊配合力均重要，该性状适合“加性－显性”模型：以加性效应为主，表现为不完全显性，显性基因比例较高，狭义遗传力ｈＮ＾２＝６９．６３％；加性基因至少为４对。
- 丝瓜 /
- 霜霉病 /
- 抗性遗传 /
- 棱角丝瓜
Abstract: The resistane heredity of Ridgegourd downy mildew was studied by a diallel cross arnong six culivare. The results showed that both general companing ability and specifil companing ability were important to resistance; the heredity of resistance could be explained by the additive dominative genehcal model. The ratio of dominant gene by recessive alleles, heritability in narrow sense was 69. 63%. The least number of additive gene was 4.
- Ridgegourd downy mildew /
- resistance heredity