Manickam Ravishankar, Chen Jaw-Rong, Sotelo-Cardona Paola, Kenyon Lawrence, Srinivasan Ramasamy
World Vegetable Center, P.O. Box 42, Tainan 74199, Taiwan.
Plants (Basel). 2021 Jan 1;10(1):75. doi: 10.3390/plants10010075.
Bacterial wilt (BW) is one of the most economically important diseases of tomato and eggplant in the tropics and subtropics, and grafting onto resistant rootstocks can provide an alternative and effective solution to manage soil-borne bacterial in these crops. This study was conducted to evaluate the BW resistance and agronomic potential of newly identified eggplant accessions as rootstocks for tomato grafting. Five BW resistant eggplant accessions (VI041809A, VI041943, VI041945, VI041979A, and VI041984) from the World Vegetable Center were evaluated as rootstocks for grafting with two different fresh market tomato cultivars (Victoria and TStarE) as scion under open field conditions in Taiwan. Graft compatibility using the tube grafting method as well as BW wilting percentage, disease index, fruit yield and quality parameters were assessed. All the rootstocks showed good graft compatibility (93% and above) and grafted plants showed low wilting percentage (0.0-20.0%) and disease index (0.0-20.8%) following inoculation with BW. Yield for the eggplant rootstock grafted tomato plants was higher compared to the non-grafted tomatoes and self-grafted tomato. Fruit quality was not affected by grafting, although some differences in antioxidant activities were observed. The new eggplant rootstocks can be considered as alternatives to the rootstocks currently used for commercial production of tomatoes during the hot-wet season.
青枯病是热带和亚热带地区番茄和茄子最具经济重要性的病害之一，嫁接抗性砧木可为防治这些作物的土传细菌病害提供一种有效替代方案。本研究旨在评估新鉴定的茄子种质作为番茄嫁接砧木的青枯病抗性和农艺潜力。在台湾的田间条件下，对来自世界蔬菜中心的5份抗青枯病茄子种质（VI041809A、VI041943、VI041945、VI041979A和VI041984）作为砧木与两个不同的鲜食番茄品种（维多利亚和TStarE）作为接穗进行嫁接评估。采用套管嫁接法评估嫁接亲和性，并对接种青枯病菌后的青枯病萎蔫率、病情指数、果实产量和品质参数进行评估。所有砧木均表现出良好的嫁接亲和性（93%及以上），接种青枯病菌后，嫁接植株的萎蔫率较低（0.0-20.0%），病情指数较低（0.0-20.8%）。与未嫁接番茄和自嫁接番茄相比，茄子砧木嫁接番茄植株的产量更高。虽然观察到抗氧化活性存在一些差异，但果实品质不受嫁接影响。在湿热季节，新的茄子砧木可被视为目前用于番茄商业生产的砧木的替代品。
