Studies on Agronomic Traits of African Rice (Oryza glaberrima Steud.) : I. Growth, yielding ability and water consumption

Japanese Journal of Crop Science

Tadao C. KATAYAMA¹  Akio SUMI¹ 

关键词: Growth and development;    Oryza glaberrima;    Manuring;    Oryza sativa;    収量性;    生育;    Water consumption;    施肥;    Water use efficiency;    水消費;    Yielding ability;    水利用効率;   

DOI  :  10.1626/jcs.63.96

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

To compare the growth, yielding ability and water consumption in the two cultivated rice specks, Oryza sativa L. and O. glaberrima Steud., the respective six strains of O. sativa and O. glaberrima collected in West Africa were examined. O. glaberrima tended to be larger in leaf area at heading time than O. sativa. In some strains of O. glaberrima, the vegetative growth was expanded notably under manuring, and also the panicle number per hill was significantly larger and the one-grain weight significantly smaller than in O. sativa. These two significant differences are correlated with the fact that many strains of O. sativa had long culm and that all strains of O. sativa belong to the javanica type with a large grain. No difference was observed in the grain number per head and the percentage of ripened grains between the two species. The grain yield tended to be larger in O. glaberrima than in O. sativa. On the other hand, O. glaberrima was found to have smaller water use efficiency with greater water consumption.

【 授权许可】

Unknown