Sterility of Japanese Rice Variety “Shinrei” Grown under Short-day Conditions

日本作物學會紀事

article

岡本 正弘¹  原 貴洋¹ 

[1] 農研機構九州沖縄農業研究センター

关键词: Anther;    Ishigaki Island;    Japanese rice variety;    Pollen;    Rapid generation advancement;    Short-day;    Sterility.;   

DOI  :  10.1626/jcs.89.331

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The Japanese rice variety “Shinrei” from the Kyushu region was subjected to short-day (9-h daylength) and long-day (14-h daylength) treatment in a phytotron with a day/night temperature regime of 30/22°C. Under the long-day and short-day conditions, the heading time was 85 days and 60 days, respectively; and, the percentage of sterility was 3% and 28%, respectively. Under the short-day condition, the anther was bent and was about 1.2 mm in length, while under the long-day condition the anther was about 1.7 mm in length. An increase in sterility was observed when the anther was shorter than about 1.5 mm and the number of pollen grains per anther was less than about 600. The anther length was affected by day-length from 3 to 9 days after panicle initiation as well as by days to panicle initiation. Short-day treatment during this period decreased the panicle length and number of pollen grains per anther, resulting in an increase in the percentage of sterility.

【 授权许可】

Unknown