淀山湖3种沉水植物的种子萌发生态

应用生态学报 ›› 1995, Vol. 6 ›› Issue (2): 196-200.

淀山湖3种沉水植物的种子萌发生态

由文辉, 宋永昌

华东师范大学环境科学系, 上海 200062

收稿日期:1993-10-27 修回日期:1994-03-02 出版日期:1995-04-25 发布日期:1995-04-25
基金资助:
国家教委博士点基金

Seed germination ecology of three submerged macropbytes in Dianshan Lake

You Wenhui, Song Yongchang

East China Normal University, Shanghai 200062

Received:1993-10-27 Revised:1994-03-02 Online:1995-04-25 Published:1995-04-25

摘要/Abstract

摘要： 探讨淀山湖3种主要沉水植物(殖草、大茨藻和苦草)种子萌发与种皮、水温以及萌发基质之间的关系。种皮对种子萌发的限制作用程度与种皮结构有关,种皮破裂后,发芽率和萌发速率均增高。水温对种子前发具有一定的促进作用,发芽率均以20℃时最大,但萌发速率却为28℃>20℃>10℃。不同沉水植物种子萌发的最适基质不同,苦草和菹草为水加土,而大茨藻则为土;单纯水中的发芽率和萌发速率均最低。

关键词: 沉水植物, 发芽率, 萌发速率, 完整种子, 破裂种子, 银杏, 活性氧, 基因表达, 臭氧

Abstract: In this paper, the.relationship between the germination of 3 submerged macrophytes inDianshan Lake and their seed coat, water temperature and substrate is studied under controlled condition.The results show that seed germination is controlled by the structure ofseed coat.When the seed coat is cracked, the germination rate and its speed are increased.Water temperature also plays an important role in promoting germination.Maximum germination can be occured at 20℃, but the speed of germination is increased withincreasing temperature.The optimum substrate for germination of Vallisneria spiralis and Potamogeton crispus is water plus soil, and that for Najas marina is soil.In water, thegermination rate and its speed are the lowest.

Key words: Submerged macrophyte, Germination rate, Germination speed, Whole seed, Cracked seed, gene expression, reactive oxygen, ozone, Ginkgo biloba

由文辉, 宋永昌. 淀山湖3种沉水植物的种子萌发生态[J]. 应用生态学报, 1995, 6(2): 196-200.

You Wenhui, Song Yongchang . Seed germination ecology of three submerged macropbytes in Dianshan Lake[J]. Chinese Journal of Applied Ecology, 1995, 6(2): 196-200.

参考文献

1 邓清明.1981.囤水田种草和蓄草养鱼的初步经验.四川水产,(3):43—44.

2 由文辉.1994.淀山湖水生植被资源及其利用.植物资源与环境.3(1):47—51.

3 陈洪达.1984.杭州西湖水生植被恢复的途径与水质净化问题.水生生物学集刊,8(2):237-244.

4 贺锡勤、谢洪高.1966.武汉东湖草鱼的食性.太平洋西部渔业研究委员会第7次全体会议论文集.科学出版社,北京,6-13.

5 Agam i,M.1988.T he ro le of fish in d istribu tion and germ ination of seed s of the subm erged m acro phytes N ajas m a rina L.and R upp ia m a ritim a L.O ecolog ia,76:83-88.

6 Carp en ter,S.R.and L odge,D.M.1986.Effects of subm erged m acrop hytes on eco system processes.A qua t.B ot.,26:341-370.

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