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首页> 外文期刊>Israel Journal of Plant Sciences >Dual response to nutrients in Sorghum bicolor: The role of critical periods in expression of adaptive plasticity
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Dual response to nutrients in Sorghum bicolor: The role of critical periods in expression of adaptive plasticity

机译：对高粱双色养分的双重响应：关键时期在适应性可塑性表达中的作用

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摘要

The growth response of Sorghum bicolor was followed for 34 days for plants exposed to modified nutrient concentrations from day 8 (early-treated) and from day 12 (late-treated) following imbibition. In late-treated plants, the effect of nutrient starvation on growth rate increased with time. In contrast, the influence of nutrient starvation was not cumulative in early-treated plants, and the rate of growth was stabilized (with regard to plants growing in a standard medium) after about ten days of treatment. This suggests an adaptive adjustment of early-treated plants to low-nutrient concentration. Differences between early and late-treated plants suggest that expression of this adaptive response is possible only during a critical period in development, the same already identified for salt-adaptation in Sorghum.
机译：从吸收后第8天（早期处理）和第12天（后期处理）暴露于改良的营养物浓度的植物中，跟踪高粱双色的生长反应34天。在后期处理的植物中，营养饥饿对生长速率的影响随时间增加。相反，在早期处理的植物中营养缺乏的影响不是累积的，并且在处理大约十天后，生长速度得以稳定（对于在标准培养基中生长的植物而言）。这表明对早期处理的植物进行适应性调整以降低营养成分浓度。早期和后期处理植物之间的差异表明，只有在发育的关键时期才可能表达这种适应性应答，而高粱中已经发现了适应盐的适应性应答。

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