Abstract:

In order to evaluate drought tolerance of main cultivars of Xinjiang processing tomatoes, the germination and seedlings characters of 14 processing tomato cultivars were investigated under half lethal PEG concentration (11.4%). Several indexes including sprouting rate, sprouting trend, sprouting index, the radicle length, fresh wet and dry wet of seedlings were investigated and cluster analysis was utilized. Results indicated drought tolerance varied among different processing tomato genotypes. Among 14 processing tomato cultivars, relative higher drought tolerance exists in Zaode, Jiahehongyun, Shihong15, Hongguo3 and Qilingzhuanshi; relative lower drought tolerance exists in Ligeer87-5, American Red, Jiahe9, Xinxuanheigeer87-5 and Changnong020; and the least drought tolerance exists in Shihong6, Qiling020, Qiling87-5 and Jiayi200. The cluster result in germination stage and significance analysis in seedling stage was coherent. The drought tolerance of processing tomatoes could be screened at germination stage and seedling stage respectively.