Studies on the charactenstics and the classification of a crop named “Wangul” (Cyperus lwasakii M and C. glomeratus L.) in Korea. IV. Charac teristics of C. Iwasakii M, and C, glomeratus L. (Morphological studies of seeds).

Abstract

The shape, color and weight of seeds of “Wan-gul” cultivated in Korea were investigated in 382 varieties of Cyperus lwasakii M. and in 3 of C. glomerratus L. The shape of seed, showing an oval differing in degree, was clearly shown by the seedtype index seed length/ (.seed width) x 100). Thus the difference in the shape of seed between C. I. and C.g. as well as the difference between varieties was made clear. The color of seed of almost all of the varieties belonging to C. I. was brownish, but some varieties showed yellow color. In all of the varieties belonging to C. g. color of seed was gray. The weight of one liter of cleaned seeds was 502 g (481∼575 g) in coarse state in C. I. and in C.g. rt was 359 g (326∼372 g). In compact state, however, the weight was 644 g (578∼677 g) in C. I. and 519 g (477∼554 g) m C g. The number of one g cleaned seeds was 23, 673 (19630∼26, 067) in C.I. and in C.g. it was 24, 366 (22, 842∼26, 216). Thus it was clearly shown that seed-size of the two spe cies was smaller than that of tobacco.