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

作     者：Qiang ZHANG Wenting DAI Hongbin WU Hui YANG Xinwen JIN 

作者机构：Institute of Agro-products Processing Science and TechnologyXinjiang Academy of Agricultural Reclamation Science 

出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)

年 卷 期：2019年第8卷第1期

页      面：40-42页

学科分类：09[农学] 

基　　金：Supported by Program of Science and Technology Support for Xinjiang's Development(2016AB028) 

主　　题：Tomato Diallel cross Tomato gray mold Combining ability Genetical analysis of resistance 

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:(1) there were significant differences in disease resistance between different varieties and different combinations.(2) There 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.(3) The additive effect in resistance inheritance was located at the primary position,and partial dominance also existed as well as cytoplasmic effect.(4) The broad-sense heritability and narrow-sense heritability were,respectively,89. 73% and82. 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.