多年生雑草クログワイの防除に関する基礎的研究 : 第2報萌芽および初期生育に関する諸特性

概要

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The present investigation was undertaken in order to evaluate the laws of sprouting and the modes of action of the factors influencing the early stage of development of kuroguwai. 1) The buds covered with prepuces are regularly located on the tuber. Differences in sprouting activity due to the bud position are existent. Moreover, the sprouting activity of each bud is affected by the number of prepuces. 2) The elongation of the negative-geotropic rhizome in water is promoted under low oxygen concentration below 1 mg/l and dark condition, but suppressed above 3 mg/l. On the other hand, the differentiation of stem and root is promoted only under high oxygen concentration above about 6 mg/l. 3) Under intermittent irrigation in pot experiment the plural primordiums of stem and root are formed. The new primordiums begin to be formed about one week after planting.
日本雑草学会の論文
1969-12-25