Studies on the Dormancy-Awakening and -Breaking in the Two-Rowed Barley Seed : II. Relationship of seed development and dormancy-awakening in different rachis positions of the ears

Japanese Journal of Crop Science

Toshio MABUCHI¹ 

关键词: Number of vascular bundle;    維管束数;    Dormancy awakening;    休眠覚醒;    Harvesting time;    採取時期;    Rachis positions;    着粒位置;    Two-rowed barley;    ニ条オオムギ;    Ripening;    粒の肥大;   

DOI  :  10.1626/jcs.60.25

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Difference of ripening and dormancy-awakening was investigated among seeds attached in different rachis positions of the ears of two-rowed barley, using cv. Satsukinijyou which has deep dormant nature as material. Samples were threshed soon after harvesting ears at yellow-, maturing-, and dead-ripe stage, respectively. After the yellow-ripe stage the ratio of seeds of thickness over 2.8 mm was high in the middle part of the ear, especially in 3/4 th rachis position from upper one. The ratio of seeds of thickness over 2.5 mm, however, was found similarly high in both upper and lower rachis position of the ear. At maturing stage the ratio of water content in seeds remarkably less in those of upper position. It may be concluded that thc fully developed seeds seemed to awake earlier from dormancy at any sampling stages after the yellow-ripe stage.

【 授权许可】

Unknown