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首页> 外文期刊>American Journal of Plant Sciences >Physiological Mechanism of Thermotolerance in Wheat (&i&Triticum aestivum&/i& Lin.) Seedlings
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Physiological Mechanism of Thermotolerance in Wheat (&i&Triticum aestivum&/i& Lin.) Seedlings

机译：小麦（i.Triticum aestivum / i Lin。）幼苗的耐热性生理机制。

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A research work was performed under sub-tropical condition (24 ° 8 ' N , 90 ° 0 ' E) at Bangabandhu Sheikh Mujibur Rahman Agricultural University with three wheat genotypes (BARI Gom 25, BARI Gom 26 and Pavon 76) to observe the mobilization of seed reserve and seedling growth under normal (15 ° C/25 ° C) and elevated (25 ° C/35 ° C) temperature in growth chamber. The effect of high temperature on wheat seedling was observed in terms of mobilized seed reserve, respiration and transpiration efficiency and seedling growth. At 35 ° C temperature, maximum mobilization of seed reserve was observed in BARI Gom varieties (BARI Gom 25 and 26) but the respiration efficiency was higher in Pavon 76 in comparison to other genotypes. Maximum loss of respiration and transpiration at 35 ° C temperature was found to produce low seedling growth in Pavon 76. It appeared from the result that at high temperature the maximum mobilized seed reserve and subsequently minimum loss of respiration and transpiration collectively contributed a positive role for better seedling growth in BARI Gom 25 and BARI Gom 26. Therefore the better mobilized seed reserve and subsequently minimum loss of respiration and transpiration during seedling development are indicators of the thermo tolerance in growing wheat seedling.
机译：在Bangabandhu Sheikh Mujibur Ra​​hman农业大学在亚热带条件下（24°8'N，90°0'i）进行了一项研究工作，研究了三种小麦基因型（BARI Gom 25，BARI Gom 26和Pavon 76）在正常（15℃/ 25℃）和升高的温度（25℃/ 35℃）的生长室中观察种子储备和幼苗生长的动员。从动员的种子储备，呼吸和蒸腾效率以及幼苗生长的角度观察了高温对小麦幼苗的影响。在35度在摄氏温度下，在BARI Gom品种（BARI Gom 25和26）中观察到最大的种子储备动员，但Pavon 76中的呼吸效率比其他基因型高。在35°C时最大的呼吸和蒸腾损失发现高温下Pavon 76幼苗生长缓慢。结果表明，高温下最大动员的种子储备以及随后最小的呼吸和蒸腾损失共同为BARI Gom 25和BARI的幼苗生长起到积极作用。 Gom 26.因此，更好的动员种子储备以及随后在幼苗发育过程中将呼吸和蒸腾作用的损失降到最低是生长小麦幼苗的耐热性的指标。

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