首页> 外文期刊>日本作物學會紀事 >On the Oxidation-Reduction Potential of Tissue Fluid of the Rice Plant : II. Redox Potential as Influenced by Light Intensity and water Temperature III. Changes in the Redox-Potential of the Leaf by the Growing Stages of the Plant IV. Varietal Differences in Redox-Potential of the Leaf
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On the Oxidation-Reduction Potential of Tissue Fluid of the Rice Plant : II. Redox Potential as Influenced by Light Intensity and water Temperature III. Changes in the Redox-Potential of the Leaf by the Growing Stages of the Plant IV. Varietal Differences in Redox-Potential of the Leaf

机译:稻草组织液的氧化还原电位:II。氧化还原电位受光强度和水温III的影响。由植物IV的越来越多的阶段的氧化还原电位的变化。叶片氧化还原潜力的变异差异

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To make clear the physiological significance of redox-potential of tissue fluid of the rice plant some experiments were conducted. The Eh value of tissue fluid was determined electrically using homogenate of tissue obtained by means of Waring Blendor. 1. According to our previous work the Eh value on a fine day begins to descend with the sunrise, arrives at a minimum value after noon, and rises again thereafter. To explain the cause of this diurnal changes in Eh value some experiments concerning the influence of light intensity and water temperature on the Eh value were carried out (Table l, 2). The usual course of diurnal changes in Eh value of leaf was changed by shading on a fair weather. That is, temporary shading delayed often the time of descent of Eh value during the day, causing in general a slight rise in its daily average value, while cantinued sheding decreased the diurnal range of Eh value, causing a considerable rise in its daily avarage value. Lower water temperature than optimum lowered the Eh value of shoot and root (Table 3). From these facts the diurnal changes seen on fair weather seem to be caused by sunlight, presumably through its inflnence upon the photosynthetic activity of the leaf. 2. Eh value of the leaf was determined at 6 a. m. every 3-7 days throughout the whole growth cycle of three varieties (Fig. 1). Regardless of the variety the Eh value of leaf ascended generally with the progress of growth stages, arriving at a maximum value in late August and early September and descended afterward with the approach of harvesting time. The Eh value showed some fluctuations; descending on a continued fine weather and ascending on a continued bad weather. 3. Varietal differences in the Eh value of leaf were studied using adult plant grown in a paddy field (Table 4). Varieties having a high resistance to "Akiochi", root-rot and Sesame leaf spot showed generally a high Eh value of the leaf as cnmpaired with those having a low resirtance.
机译:为了清楚地清楚氧化还原的生理意义,进行了水稻植物的组织液的潜力一些实验。使用通过警察混合物获得的组织的匀浆电气测定组织液的EH值。 1.根据我们之前的工作,EH值在晴天开始随着日出下降,在中午之后的最低价值到达,此后再次上升。为了解释欧元值的这种昼夜变化的原因,进行了一些关于光强度和水温对EH值的影响的实验(表L,2)。叶片EH值的通常变化课程通过阴影在公平的天气上改变。也就是说,临时阴影延迟通常在白天欧元值的下降时间,导致一般的平均值略有上升,而脱落的血管减少了欧元值的日元范围,导致其日常的途径值相当升高。降低水温,而不是最佳降低芽和根部的EH值(表3)。从这些事实中,在公平天气中看到的日变化似乎是由阳光引起的,大概是通过它对叶子的光合活性的风力感到充气。 2.叶片的eh值在6 a时测定。 m。每3-7天整个生长周期三个品种(图1)。无论叶片的常态常态均升高,一般都随着增长阶段的进展,在8月下旬和9月初到达最高价值,并以收获时间的方法后来。 EH值显示出一些波动;在持续晴朗的天气上下降并在持续恶劣的天气上升。使用稻田生长的成人植物研究了叶EH值的变异差异(表4)。具有高抗“Akiochi”的品种,根腐和芝麻叶点通常显示出叶子的高EH值,与具有低分隔率的叶子一样。

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