Fruit yield and bacterial wilt symptoms on eggplant genotypes grown in soil infested with Ralstonia solanacearum

Fruit yield and bacterial wilt symptoms of eggplant genotypes CNPH006, CNPH171, CNPH658, CNPH778, CNPH783, and CNPH785 were quantified in soil naturally infested with Ralstonia solanacearum(race 1, biovar 3) in Brasília, Brazil.Exceptfor CNPH778, all genotypes developed at least one typical wiltedplant. Besides wilt,other symptoms considered for assessing levels of tolerance/resistance among genotypes wereplant death (CNPH006, CNPH171, CNPH658 and CNPH783), leaf chlorosis(CNPH785) and plant dwarfing (all genotypes). The occurrence of bacterial ooze on cut stems was observed in all plants grown in infested beds, including those that did not exhibit wilt symptoms. Plants grown simultaneouslyin noninfested beds of the same dimensions and soil characteristics allowed the comparison ofyield losses due to the pathogen. The genotypes were grouped according to their ability to maintain fruit production in the infested area. CNPH785 was the most tolerant genotype, with no significant loss due to the disease,followed by CNPH783, CNPH778 and CNPH171, with mean losses of 19.3%, 11.4%, and 10.1%, respectively. The genotypes CNPH658 and CNPH006 were the most susceptible, with average losses of 99.53 and 99.32%, respectively.本数据集量化了巴西巴西利亚地区自然侵染青枯雷尔氏菌（Ralstonia solanacearum，生理小种1、生物变种3）的土壤中，6个茄子基因型（CNPH006、CNPH171、CNPH658、CNPH778、CNPH783及CNPH785）的果实产量与青枯病症状表现。除CNPH778外，其余供试基因型均至少表现出1株典型萎蔫植株。除萎蔫症状外，用于评估各基因型耐/抗病性水平的其他评价指标还包括植株死亡（涉及CNPH006、CNPH171、CNPH658及CNPH783）、叶片褪绿（仅CNPH785）以及植株矮化（所有供试基因型均出现该症状）。所有在带菌土壤种植床中定植的植株，即便未表现萎蔫症状，其切取茎秆后均观察到细菌溢脓现象。同期在规格、土壤特性一致的无病原菌土壤种植床中定植的植株，可用于对照分析该病原菌诱导的果实产量损失。供试基因型依据其在带菌种植区维持果实生产的能力进行分级分组。CNPH785为最耐病基因型，其果实产量未出现显著病害诱导损失；其次为CNPH783、CNPH778与CNPH171，对应平均产量损失率分别为19.3%、11.4%与10.1%。基因型CNPH658与CNPH006为最感病材料，平均产量损失率分别达99.53%与99.32%。