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首页> 外文期刊>日本作物學會紀事 >Statistical Studies on Various Characteristics of Crop Plant : IV. Varietal differences of a morphological characteristic of rice plants when three plant-spacing at various levels of nitrogen fertilizer put together
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Statistical Studies on Various Characteristics of Crop Plant : IV. Varietal differences of a morphological characteristic of rice plants when three plant-spacing at various levels of nitrogen fertilizer put together

机译：作物植物各种特征的统计研究：IV。三种植物间距在各种氮肥中三种植物间距的稻植物形态特征的变异差异

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According to the previous reported line (2, 3, 4), studies on the varietal differences in morphological characteristics of rice were carried out. In this paper, a morphological characteristic was estimated by principal component analysis using all the data of three plant-spacings at high-nitrogen level and non-nitrogen level. The result at standard nitrogen level was already reported in the previous paper (4). The present results Were as follows: (1) A morphological characteristic of each variety at each nitrogen level can be shown by two principal components which are indices of the morphological characteristic. These indices were as follows: High-nitrogen level: X1= 0.445x1+0.314x2+0.288x3+0.361x4+0.500x5+0.490x6, X2= -0.339x1+0.422x2+0.638x3+0.529x4-0.056x5-0.131x6, Non-nitrogen level: X1= 0.462x1+0.262x2+0.273x3+0.341x4+0.531x5+0.514x6, X2= -0.306x1+0.515x2+0.585x3+0.538x4-0.053x5-0.078x6 (2) The meaning of these indices was not changed by the levels of nitrogen application, even if the result of previous report (4) was considered together. The first index is concerned chiefly with the yield of an individual plant, and the second index is concerned chiefly with the plant type whether it is a long culm, heavy panicle one, or a short culm, high tillering one. (3) The plant type showed by the second index varied with plant-spacing at each nitrogen level, and these variations could be classified into three types as mentioned in the previous paper (4).
机译：根据先前报告的线（2,3,4），进行了对水稻形态特征的变异差异的研究。本文通过在高氮水平和非氮水平下使用三种植物间距的所有数据来估算形态特征。在前一篇论文中已经报道了标准氮水平的结果（4）。本结果如下：（1）每个氮水平的各种形态特征可以通过两种主要成分表示，这是形态特征的指标。这些指数如下：高氮水平：X1 = 0.445x1 + 0.314x2 + 0.288x3 + 0.361x4 + 0.500x5 + 0.490x6，x2 = -0.339×1 + 0.422x2 + 0.638x3 + 0.529x4-0.056x5-0.131 X6，非氮气水平：X1 = 0.462x1 + 0.262x2 + 0.273x3 + 0.341x4 + 0.531x5 + 0.514x6，x2 = -0.306x1 + 0.515x2 + 0.585x3 + 0.538x4-0.053x5-0.078x6（2）即使将先前报告（4）的结果一起考虑，这些指数的含义也没有改变。第一指数主要涉及一个个体植物的产量，第二个指数主要与植物类型有关，无论是长秆，重穗还是短的秆，高分蘖1。 （3）由第二指数显示的植物类型随着每个氮水平的植物间隔而变化，并且这些变化可以分为前一篇文章中提到的三种类型（4）。

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