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首页> 外文期刊>International Journal of Plant & Soil Science >Effect of the Retardant
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Effect of the Retardant

机译：阻燃效果

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摘要

The effect of different concentrations of growth retardant "Dextril" (C11 H18Cl2O7P) on tomato ( Solanum lycopersicum c.v Huda F1) seedlings quality was studied, at the Agriculture Faculty of Alexandria - Egypt, on 2010. Tomato seedlings were sprayed when the second true leaf was appeared with "Dextril" at (0.02 – 0.04 – 0.06 – 0.08 – 0.1%) levels, to promote seedlings tolerance to heat stress during summer – autumn period and limit stem growth and elongation. The results showed that, "Dextril" treatment of (0.02 -0.04 – and 0.06%) levels improved seedlings quality and decreased stem height by 30, 32 and 35% respectively compared to the control, whereas, 0.08 and 0.1% levels showed toxic effects. Treatment with "Dextril" increased as well, stem diameter, fresh and dry weight of shoots but it did not affect leaf number compared to the control. The results indicate that the spraying with low concentrations of ‘Dextril” is promising measure for improving the stress response and developmental characteristics of tomato seedlings grown under high temperature conditions.
机译：不同浓度的生长抑制剂“右旋糖酐”（C 11 H 18 C 12 O 7 P）的作用在2010年埃及埃及亚历山大市的农业学院研究了番茄（Solanum lycopersicum cv Huda F1）幼苗的品质。当第二片真叶出现时，在（0.02 – 0.04 – 0.06 – 0.08）处喷出第二片真叶时，用“ Dextril”喷洒了番茄幼苗。 -0.1％）水平，以提高幼苗在夏季至秋季对热胁迫的耐受性，并限制茎的生长和伸长。结果表明，与对照相比，“糊精”处理（0.02 -0.04 –和0.06％）水平分别提高了幼苗质量和降低茎高30％，32％和35％，而0.08％和0.1％的水平显示了毒性作用。与对照相比，用“右旋糖酐”处理也增加了茎的直径，枝干的鲜重和干重，但它不影响叶数。结果表明，低浓度的“右旋糖酐”喷洒有望改善高温条件下番茄幼苗的胁迫响应和发育特性。

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