Cyperus esculentus L.とCyperus rotundus L.(ハマスゲ)の個生態の比較

概要

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Purple nutsedege (Cyperus rotundus L.) is one of the most troublesome perennial weeds in the southern part of Japan. It is reported that yellow nutsedge (Cyperus esculentus L.) is about as formidable as purple nutsedge in U.S.A., and the same plant in Egypt has very nourishing tubers. In this study the growth of yellow nutsedge obtained from Egypt and purple nutsedge in our country were compared, and following results were obtained. 1. The plant height was 25〜30 cm in purple nutsedge and 70〜100 cm in yellow nutsedge. The shape of leaf blade and sheath was almost same in two species. Every shoots of purple nutsedge grew scatteringly, on the contrary, those of yellow nutsedge grew fasciculately. 2. In purple nutsedge, the tuber located at the junction of the rhizome and leaf. In yellow nutsedge, on the other hand, the tuber located in the tip of rhizome, and the portion of the junction of rhizome and leaf did not grow upon tuber. 3. From above results, it seemed that the yellow nutsedge obtained from Egypt was fairly domesticated plants.
1968-12-25