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首页> 外文期刊>日本作物學會紀事 >Studies on a Method for Determining the Deepness of Green Color and Chlorophyll Content of Intact Crop Leaves and Its Practical Applications. : 2. Photoelectric characters of chlorophyllo-meter and correlation between the reading and chlorophyll content in leaves.
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Studies on a Method for Determining the Deepness of Green Color and Chlorophyll Content of Intact Crop Leaves and Its Practical Applications. : 2. Photoelectric characters of chlorophyllo-meter and correlation between the reading and chlorophyll content in leaves.

机译：确定完整作物叶片绿色和叶绿素含量深度的方法及其实际应用的研究。 ：2.叶绿素测量仪的光电特征及叶片叶片与叶绿素含量的相关性。

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For the purpose of estimating the deepness of green color and chlorophyll content per leaf area in intact leaves of crop plants, a type of chlorophyllo-meter was constructed, basing on the principle of a difference attenuance which corresponds the difference between the attenuance at 670 mμ attributable to chlorophyll contained in leaves and that at 750 mμ showing the basic absorption. From the photoelectric characters of chlorophyllo-meter, it was suggested that the reading (-log T) of the meter might be directly proportional to the quantity of chlorophyll present within the light path, provided that the leaf tissue is homogeneous and the chlorophyll content is less than a certain limit. The experimental results may clear the following points: (1) High correlations exist between the order of reading and that of deepness of green color judged by naked eye in rice leaves, particularly in case where the reading difference was greater than 10 per cent (Table 1). (2) Relation between the reading and chlorophyll content per leaf area was studied in several crop plants including rice, wheat, Italian rye grass and sweet potato. As the result, very high positive correlations were obtained within respective plant kind when the leaf parts determined were relatively homogeneous exclusive of the midrib or veins (Figs. 5 and 8B), while some lowering in the correlation was noticed when the midrib was placed in the center of light path in graminaceous plants (Figs. 2, 3, 4, 6, 7 and 8A). (3) Regression coefficient of chlorophyll content per leaf area to the reading differs widely according to the kind of plants. There was not, however, much difference in coefficient among the plants which are included in the same family (Fig. 9). It was concluded that the chlorophyllo-meter may be used for determining the deepness of green color and estimating the chlorophyll content per area in intact plant leaves.
机译：为了估算每叶片面积的绿色和叶绿素含量的完整叶片在作物植物的完整叶片中，构造了一种叶绿素仪表，基于差异衰减原理，其对应于670 mμ的衰减之间的差异归因于叶片中含有的叶绿素，在750 mμ显示出基本吸收。从叶绿素米的光电特征，建议仪表的读数（-log t）可能与光路内存在的叶绿素量成比例，条件是叶片组织是均匀的并且叶绿素含量是小于一定限度。实验结果可能明确以下几点：（1）在稻草中肉眼判断的读数顺序与绿色深度的高相关性，特别是在阅读差异大于10％的情况下（表1）。 （2）在几种作物植物中研究了每叶面积的读数和叶绿素含量之间的关系，包括米饭，小麦，意大利黑麦草和甘薯。结果，当确定的叶片部分相对均匀地排除胚胎或静脉（图5和8B）时，在相应的植物中获得非常高的正相关性（图5和8B），而当米子被放入时，注意到相关的一些降低禾本科植物中的光路中心（图2,3,4,6,7和8A）。 （3）根据植物种类的叶片叶绿素叶绿素含量的回归系数不同。然而，包括在同一族中的植物中的系数差异很大（图9）。得出结论是，叶绿素仪可用于确定绿色的深度，并估算完整植物叶片中每面积的叶绿素含量。

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