Influence of Nitrogen Application on Anther Length, Anther Width and Number of Engorged Pollen Grains as Characters Related to Cooling Injury in Rice Plants

Japanese Journal of Crop Science

Hisayoshi TATSUTA¹ 

关键词: Anther legth;    基肥窒素量;    Anther width;    充実花粉数;    Basally applied nitrogen;    耐冷性;    Cooling injury;    追肥時期;    Cooling tolerance;    葯長;    Number of engorged pollen grains;    葯幅;    Top-dressing time;    冷害;   

DOI  :  10.1626/jcs.68.187

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Anther length, anther width, and number of engorged pollens were reported to have a relationship to cooling injury of rice. The effects of nitrogen application on anther size and number of pollens were studied in a field for two years. Higher basal nitrogen application (tested from 0 to 13 g/m2) resulted in shorter anther length, shorter anther width, and fewer engorged pollens. The top dressing of nitrogen (4 g/m2) applied at the panicle formation stage resulted in shorter anther length, shorter anther width, and fewer engorged pollens compared with top dressings at other stages or with no top dressing. The effects of a top dressing on anther size and on the number of pollens were small when the nitrogen applied was 10 g/m2.

【 授权许可】

Unknown