关键词: 水稻, 光敏核不育, 花药壁, 超微结构, Ca²⁺

Abstract: Using potassium antimonate technique, the ultrastructure and Ca²⁺ distribution in anther wall of photo-sensitive genic male-sterile line of Nongken 58S were studied. The results showed that under the long-day photoperiod, some vacuoles and Ca²⁺ precipitates were found in the tapetal cells in anther wall at pollen mother cell stage. With the growth of the plants, Ca²⁺ precipitates in the cells of anther wall increased, and it was mainly distributed in tapetal cells and on the surface of the Ubish bodies. Under the long-day photoperiod, the tapetal cells could not form intergraded Ubish bodies and the Ca²⁺precipitates on Ubish bodies were much less than that under the short-day photoperiod.

Key words: rice, photosensitive genic male-sterile, anther wall, ultrastructure, Ca²⁺