保护地黄瓜苗期性状遗传分析

 以6份保护地黄瓜自交系为试材, 采用完全双列杂交设计轮配法(不含反交) 配制15 个组合, 研究了黄瓜苗期子叶面积、真叶面积、地上部鲜样质量、株高和下胚轴长度的遗传规律。结果表明:单株子叶面积、真叶面积和地上部鲜样质量的遗传以显性效应为主, 广义遗传力分别为93. 3 %、97. 2 %和94. 3 % , 狭义遗传力分别为35. 3 %、43. 7 %和52. 9 %; 株高和下胚轴长度的遗传以加性效应为主, 广义遗传力分别为98. 2 %和97. 8 % , 狭义遗传力分别为78. 2 %和87. 6 %。控制这些性状的基因可能是寡基因或寡基因组。

Genetic Analysis of Some Seedling Characters in Protected Cucumber

Six cucumber inbred lines for protected cultivation were used as materials in the experiment. The genetic analysis of some seedling characters, including cotyledon area, true leaf area, fresh mass above-ground were conducted by using complete diallel crossing (without reciprocal crossing). Results showed that the inheritances of cotyledon area, true leaf area and fresh mass above-ground were mainly dominant effect. The broad heritabilities of them were 93.3%, 97.2% and 94.3%, while the narrow heritabilities of them were 35.3%, 43.7% and 52.9% respectively. However, the inheritances of plant height and plumular axis length were mainly additive effect. The broad heritabilities of them were 98.2% and 97.8%, while the narrow heritabilities of them were 78.2% and 87.6% respectively. The genes controlling these characters might be oligogene or oligogenome.