Genetic Analysis of Resistance to Tomato Gray Mold(Botrytis cinerea)

• 作者: Hongbin WU Hui YANG Qiang ZHANG Wenting DAI Xinwen JIN
• 来源期刊: 农业生物技术:英文版
• 学科: 农学
• 关键词: TOMATO DIALLEL cross TOMATO GRAY MOLD COMBINING ability Genetical analysis of resistance
• 年，卷（期）: 2019,（1）
• 页码范围: 40-42
• 页数: 3页
• 分类号: S

摘要

The study used four tomato varieties,03786(susceptible),05237(susceptible),C2985(resistant)and Wva536(resistant)with different resistance,to formulate combinations according to Griffing(I)complete diallel cross method.And Botrytis cinerea was inoculated to investigate the incidence of gray mold.The results showed that:①there were significant differences in disease resistance between different varieties and different combinations.②There were significant differences in general combining ability and special combining ability between the tested varieties,and Wva536 and C2985 had a higher general combining ability effect,and were both relatively good parents when formulating resistant combinations.Combinations Wva536×03786 and Wva536×05237 had the highest special combining ability,and thus have the value of further research and utilization.③The additive effect in resistance inheritance was located at the primary position,and partial dominance also existed as well as cytoplasmic effect.④The broad-sense heritability and narrow-sense heritability were,respectively,89.73%and 82.15%,which were higher,indicating that the parents had a greater effect on offsprings.The resistance genes can be expressed in offsprings through gene accumulation,and should be selected in the early generation.