安徽农业科学2011，Vol.39Issue(8)：4416-4417,4422,3.
四角菱根系的发育和功能
Development and Function of Root System of Trapa quadrispinosa Roxb.
摘要
Abstract
[ Objective ] This paper aimed to explore the adaptive characteristics of development and function of the root system of Trapa quadrispinosa Roxb. [ Method ] Observation was conducted on the growth and development from the seedling cultivated in artificial water channels, and comparison in the cultivation was done of normal plants and treated plants in three groups of separately excising off adventitious roots,pinnate appendices (special adventitious roots) ,and adventitious roots and pinnate appendices [ Result ] The radical and the pinnate appendices both grew determinately, and the apex of radical presented browning death after the radical stopped growth. The adventitious roots on the base of radical and the node of stem grew downwards and spirally into the tier of soil under water body. The pinnate appendix was generally with four lines of branches in radial symmetry. After only the root,and both the adventitious root and the pinnate appendix were excised off, etiolating of the new floating leaf occurred, however,if only the pinnate appendix was cut away, the new floating leaf kept green. [ Conclusion ] The adventitious root system, which continually arose towards the stem apex along with growth of the stem and was in stead of the root system from the radical, can better fix its plant which was thin and floating in water body, and was with important absorption function. The pinnate appendix was a complementary photosynthetic organ of specialized adventitious root.关键词
四角菱/不定根/羽状物/发育/功能Key words
Trapaceae/ Adventitious roots/ Pinnate appendices/ Development/ Function分类
农业科技引用本文复制引用
陆昌燕,刘体育,郑兴峰..四角菱根系的发育和功能[J].安徽农业科学,2011,39(8):4416-4417,4422,3.基金项目
徐州师范大学博士科研启动基金(KY2004117) （KY2004117）
徐州师范大学自然科学基金项目(08XLY07). （08XLY07）
