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首页> 外文期刊>African Journal of Biotechnology >In vitro response of promising tomato genotypes for tolerance to osmotic stress
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In vitro response of promising tomato genotypes for tolerance to osmotic stress

机译：有前景的番茄基因型对渗透胁迫的耐受性的体外反应

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摘要

Drought is a major abiotic factor that limits plant growth and productivity. Tomato is an important vegetable crop and area under production is limited by irrigation water scarcity. Four cultivars of tomato were grown as callus cultures under conditions of water stress, which was induced by addition of polyethylene glycol (6000) in the medium. The presence of PEG in the medium decreased relative growth rate and increased dry matter content in all treatments compared with the control. In all cultivars, proline levels increased in response to water stress. Also, there was decreased shoot induction in all cultivars with increase PEG treatments. The number of shoot forming in PS-10 and Peto was higher then Roma and Nora cultivars. This result can be used for?in vitro?screening and manipulations of tomato cultivars for improvement of drought tolerance.
机译：干旱是限制植物生长和生产力的主要非生物因素。番茄是重要的蔬菜作物，生产面积受到灌溉水短缺的限制。在水分胁迫下，将四个品种的番茄作为愈伤组织培养，这是通过在培养基中添加聚乙二醇（6000）诱导的。与对照相比，在所有处理中，培养基中PEG的存在都会降低相对生长速率并增加干物质含量。在所有品种中，脯氨酸水平响应水分胁迫而增加。而且，随着PEG处理的增加，所有品种的芽诱导都减少。 PS-10和Peto中芽形成的数量高于罗马和诺拉品种。该结果可用于番茄品种的体外筛选和操作，以提高抗旱性。

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