摘要： 对8个不同番茄品种利用人工气候箱低温处理研究了其低温适应性的生理变化,从苗期叶绿素含量、可溶性糖含量、根系活力及植株生长量等方面比较了处理前后的变化。结果表明:以常温昼28℃/夜18℃为对照,在昼14℃/夜8℃的低温处理条件下,中杂105、1056两个番茄品种的生长指标表现出较强的耐低温性,其苗期的叶绿素含量、可溶性糖含量、根系活力的变化趋势也与其耐低温性相一致,因此这些指标可以作为番茄品种耐低温性的筛选指标。

关键词: 番茄品种, 耐低温性, 生理指标, 筛选

Abstract: The physiological character influences of low temperature treatment on 8 tomato varieties during seedingstage were studied and identified.The results showed that tomato varieties 1056 and Zhongza 105 had higher cold toleranceunder day 14 ℃/night 8 ℃ treatment according to the growth change comparing with day 28 ℃/night 18 ℃.Thechange of chlorophyll content,soluble sugar content and root activity rightly reflected the low -temperature -resistant oftomato varieties.So we can choose such physiological changes as the tolerance indicators of low -temperature in tomato.

Key words: Tomatovarieties, Lowtemperaturetolerance, Physiologicalindicator, Screening

中图分类号: 

• S641.01