关键词: 裸花紫珠（Callicarpa nudiflora Hook. et Arn.）, 种子生物学, 含水率, 生活力, 萌发率

Abstract: Individual size, micro-structure and ultra-structure, life force, water absorption rate, germination rate and other characteristics of seeds of Callicarpa nudiflora Hook. et Arn. used for common medicinal plants of Li nation have been researched. The results showed that the shape and size of C. nudiflora seed difference was small, and the average length, width and thickness were respectively 1.96 mm, 1.76 mm and 1.84 mm. The fruit was consisted of 4 room ovules which only 1~2 rooms of ovules have been developed completely by observing the paraffin sections under the biological microscope. Fruit surface has a plurality of ridged bands, most glandular scale, and fewer non-glandular hairs under the scanning electron microscope. The average seed moisture content was 11.3%, the average value of the water absorption rate was 80.33%, and the average value of the life force was 33.3%. At the optimal germination temperature 25 ℃, treatment measures of the solution of 0.3% liquor potassii permanganatis, 500 mg/L GA₃ or sand embedding could have a higher germination rate. Incomplete development of fruit may be the factor leading to low viability and germination rate of seeds. The germination rate of seeds could be improved after treatment with different chemical agents and sand.

Key words: Callicarpa nudiflora Hook. et Arn., seed biology, the moisture content, life force, germination rate