蔸龄对苎麻光周期钝感生理雌性系生长,成花及性别表现的效应

对光周期钝感生理雌性系ＮＧ１ １、２、３年生麻的观察结果表明：随蔸龄的增大，株高增加、叶片数增多；第１期花的雄花及总花序数也随之增加；二麻的总花序节数及雄花序节数大大高于头麻，不同年份的成花量及性别比有较大差异。蔸龄及温度对ＮＧ１的生长、成花及性型表现有重要作用。

Effect of the Years after Planting on the Growth, Flowering and Sexual Present of Day Neutral Physiological Gynoecious Clone in Ramie [Boehmeria nivea (L) Gaud]

Day neutral physiological gynoecious clone NG 1 that had planted for one, two and three years was observed. The results showed that, the more years after planting, the higher stems and more leaves, and also more male flowers and total flowers in the first florescence the clone was. In the second crop, NG 1 presented much more male flowers and total flowers than that in the first crop. There wase larger difference in the number of flowers and sexual rate between years. The years after planting and temperature made a important role in the growth, flowering and sexual present.