绣球茜（Dunnia sinensis Tutch.）的生物学特性研究

初步研究了广东古兜山自然保护区内绣球茜（Dunnia sinensis Tutch.）的生物学特征（茎、叶、花、果实、种子）和种子繁殖特性.结果表明:在不同的生长环境中，茎、叶、果实、种子的形态和生长状况有较大差异；绣球茜花色鲜艳，花序美观，单株花期长达3-8周，测量得花粉胚珠比为612.46275.31，具有虫媒传粉的特性；种子繁殖发芽率为11.33-38.66%，发芽势为10.66-36.00%，不同环境所采的种子或经不同处理后种子发芽率和发芽势有明显差异.

STUDIES ON THE BIOLOGICAL CHARACTERISTIC OF DUNNIA SINENSIS TUTCH

The biological characteristcs and seed propagation of Dunnia sinensis Tutch in Gudou Mountain Nature Reserve is studied. . The results were summarized as follows. (1) There are significant differences in the morphology and growth status of stems, leaves, flowers, fruit and seeds which grow in different environments. The flowers are bright and beautiful, which bloom for 3-8 weeks; the pollen ovule ratio is 612.46275.31, with the characteristics of insect pollination. (2) The germination rates varied among 11.33-38.66%, and the germination potential was 10.66-36.00%. There are significant differences between the germination rate and germination potential of the seed propagation which were collected in the different environments or with different experimental treatments.