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首页> 外文期刊>日本作物學會紀事 >Thickening Growth Inhibition and Re-thickening Growth of Tuberous Roots of Sweet Potato Plants (Ipomoea batatas Poiret)
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Thickening Growth Inhibition and Re-thickening Growth of Tuberous Roots of Sweet Potato Plants (Ipomoea batatas Poiret)

机译：甘薯植物（IPOMOEA Batatas Poiret）的增厚生长抑制和再加厚生长

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The morphological and physiological features of tuberous roots in the process of thickening growth inhibition and re-thickening growth were tested by means of the light exposure treatment for growing tuberous roots. Cultivar (Okinawa, No.1OO) was used as sample and the light exposure treatment for the growing tuberous roots were conducted in the field. The tuberous roots were outcropped on the ground by washing away the soil covering the hills. Those outcropped tuberous roots were exposed to the sun light for about thirty to seventy days. The light exposure treatment was stopped by covering the outcropped tuberous roots with soil. The results are as followed: (1) The thickening growth of tuberous roots was inhibited by exposing them to the light. On the contrary, the translocation of photosynthates to tuberous roots had continued and the thickening growth of underground part of the treated tuberous roots (tuberous roots exposed to the light) was apparently promoted. (2) The starch content in the treated tuberous roots decreased in the extreme and the accumulation of starch granules decreased starting from the cortex to the central cylinder with the lapse of time after the treatment and the size of starch granules diminished also. Such changes were brought about in parallel with the decrease in the starch content. (3) In case of the treated tuberous roots, the sclerenchymalization of parenchymatous cells near the primary cambium was found apparently. It showed an increase also in the number of vessels near the primary cambium. But, the number of parenchymatous cells in the central cylinder decreased due to the treatment. (4) The re-thickening of tuberous roots of the plants was found due to the stop of treatment. The starch content had increased with the re-thickening of tuberous roots and the histochemical features were similar to those of the non-treatment tuberous roots. (5) From the above-mentioned facts, it may be considered that the thickening of tuberous roots of sweet potato plants is related to the development of starch storage function and that the starch storage furnction is concerned with the activity of starch biosynthesis, starch accumulation, and the increase in parenchymatous cells. Viewed from the result of tuberous roots to the light as well as of the re-thickening growth of tuberous roots due to the stop of the treatment, it may be suggested that the starch storage function of tuberous roots is apt to adapt itself to the environmental conditions
机译：通过对生长枯萎的肿块处理的光曝光处理测试了增稠生长抑制和再加厚生长过程中枯枝的形态和生理特征。用作样品的品种（冲绳，NO.1OO）作为样品，在该领域进行了生长结节根的光曝光处理。通过洗掉覆盖丘陵的土壤，枝条根在地上露出。那些占外的肺部根源暴露在阳光下约三十至七十天。通过覆盖具有土壤的占状枯枝枯萎部落来停止光曝光处理。结果如下：（1）通过将它们暴露于光线来抑制结节根的增稠生长。相反，光合素到硫酸根的易位仍在继续，并且显然促进了经过治疗的枯萎部落的地下部分的增厚生长（暗淡地暴露于光线）。 （2）治疗的茎根中的淀粉含量在极端下降，并且淀粉颗粒的积累从皮质从皮质到中央圆筒开始，在处理后的时间流逝，并且淀粉颗粒的尺寸也减少。这种变化与淀粉含量的减少平行地带来了。 （3）如果治疗的肺部根部，显然发现了初级链晶虫附近的副癌细胞的硬化致误态化。它表现出在初级挂钩附近的船只数量增加。但是，由于治疗，中央圆柱体中的副疗细胞的数量降低。 （4）由于治疗的停止，发现了植物的结节根的重新增厚。淀粉含量随着结节根的重新增厚而增加，组织化学特征与非治疗结节根部的重新增厚。 （5）从上述事实中，可能认为甘薯植物的结节根的增厚与淀粉储存功能的发展有关，并且淀粉储藏剂涉及淀粉生物合成，淀粉堆积的活性。和副癌细胞增加。从肺部根部的结果看来以及由于处理的停止由于停止而重新加厚肿块根的生长，可能表明茎根的淀粉储存功能是适应环境的适应使适应

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