Abstract

The hormonal status, photosynthesis rate, and productivity of nontransformed and Bt-gene transformed potato plants of the Superior variety were studied. It was shown that during forced dormancy, the ABA content in the eyes of tubers of transformed plants was two times higher than that of nontransformed plants, while the content of IAA and zeatin was 1.5 times lower. The ratio of zeatin/ABA and, to a greater extent, IAA/ABA was below the control. In the leaves of transgenic plants, the ABA level was 40% lower than in the nontransformed ones, and the zeatin/ABA ratio remained low, but the IAA/ABA ratio increased. Against the background of this hormonal situation, the assimilation of ¹⁴CO₂ in the leaves of transgenic plants increased by 24%, but lower productivity (by 21%) when grown in a soil culture was noted. In transformed plants, a smaller number of tubers in the bush and a decrease in the starch content in them were revealed, which may indicate a violation of the initiation of the tuberization process and the outflow of assimilates from the leaves.

中文翻译：

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Bt基因转化马铃薯植物激素状态和光合作用的变化

摘要

研究了优质品种的未转化和Bt基因转化马铃薯植物的激素状况、光合作用速率和生产力。结果表明，在强制休眠期间，转化植株块茎眼中ABA含量比未转化植株高2倍，IAA和玉米素含量低1.5倍。玉米素/ABA 的比例以及在更大程度上 IAA/ABA 的比例低于对照。转基因植株叶片中ABA水平比未转化植株低40%，玉米素/ABA比值保持较低，但IAA/ABA比值升高。在这种荷尔蒙情况的背景下，¹⁴ CO ₂的同化转基因植物叶子中的 24% 增加，但注意到在土壤培养中生长时生产力较低（21%）。在转化植物中，灌木中的块茎数量较少，其中淀粉含量降低，这可能表明违反了块茎化过程的启动和叶子中同化物的流出。