Title: Breeding of promising tomato genotypes and hybrids against bacterial wilt
Abstract: Tomato cultivation was set back in Chongqing(China) due to severe incidence of bacterial wilt caused byRalstoniasolanacearum.Hence,studies were initiated toidentify the pathogen,screen resistant resources,and breed hybrids with resistance to thedisease.68 isolates of pathogen of tomato bacterial wilt were obtained during 2000-2003.The morphological characteristics,culturalcharacteristics,biochemical properties and pathogenicity of the isolates indicated that they wereRalstonia solanacearum,race 1,andbiovar Ⅲ.Studied of methods of seedlings inoculation revealed that cutting and dipping method was the best one,compared with root-stabbing andleaf-clipping.4 tomatolines,which had highresistance to bacterial wilt,had been screened out from184 genotypes.Among12 hybrids that crossed fromthe 4 resistances,4012 showed higher yield,good qualities,and promising resistance.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 2
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