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首页> 外文期刊>日本作物學會紀事 >Studies on the Emergence of Rice Seedlings in the Direct-Sowing Culture. : 3. Strength of elongation of coleoptile and foliage leaves of rice plants.
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Studies on the Emergence of Rice Seedlings in the Direct-Sowing Culture. : 3. Strength of elongation of coleoptile and foliage leaves of rice plants.

机译：直接播种文化中水稻幼苗出现的研究。 ：3.水稻植物植物叶片伸长的力量。

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Recently direct-sowing culture of paddy rice has been put into practice and it has given rise to a problem in seedling-emergence. This experiment was made on the strength of elongation of coleoptile using strain meter. The measurement of the strength was made in darkness at 30°C. In this experiment about 15-30 mm length of coleoptile was used as material. In some cases, strength of elongation of foliage leaves was measured. Results were as follows: 1. Strength of elongation of coleoptile of paddy rice plants decreased with the increase of soil moisture content. The strength of "Ariake" was about 15 g in 15 percent moisture plot, 12 g in 20 percent moisture plot and only 0.6 g in 25 percent moisture plot. The strength was more vigorous in coleoptile of well ripened seed than that of poorly ripened seed. 2. Strength of elongation of coleoptile differed in each type of rice plants, i.e., in 15 percent moisture plot, 15.9 g-11.8 g of paddy rice plants and 11.7 g-10.3 g of upland rice plants in japonica type, and 18.9 g-9.9 g of rice plants in indica type. 3. As regards the coleoptile of paddy rice plants, no positive relationship between the strength of elongation of coleoptile and the height or maturity was observed. 4. Strength of elongation of imperfect leaf was about 22 g and that of the 1st leaf was about 4 g in 15 percent moisture plot.
机译：最近，水稻的直接播种文化已经投入实践，它引起了苗木出现的问题。使用应变仪采用植物精化伸长率的实验。在30℃下在黑暗中进行强度的测量。在该实验中，使用约15-30mm的植物精化作为材料。在一些情况下，测量叶片伸长率的强度。结果如下：1。水稻植物髓鞘伸长强度随着土壤水分含量的增加而降低。 “ariake”的强度在15％的水分图中为15克，12克在20％的水分沉积中，仅为0.6克，在25％的水分图中。在成熟的种子良好的种子中的植物中的强度比成熟的种子良好的强度更大。 2.每种类型的水稻植物伸长率的强度不同，即15％的水稻植物，15.9g-11.8g水稻植物和11.7g-10.3g粳稻植物，18.9 g- 9.9g籼型稻米植物。 3.关于水稻植物的胚芽鞘，观察到胚芽鞘伸长强度与高度或成熟之间的阳性关系。 4.不完美叶伸长的强度约为22克，第1叶中的叶片中的15％含量约为4克。

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