ECOLOGY OF 2 CYTOTYPES OF BUTOMUS-UMBELLATUS .2. REPRODUCTION, GROWTH AND BIOMASS PRODUCTION

被引：33

作者：

HROUDOVA, Z

ZAKRAVSKY, P

机构：

[1] Institute of Botany, Academy of Sciences of the Czech Republic, Průhonice

来源：

FOLIA GEOBOTANICA & PHYTOTAXONOMICA | 1993年 / 28卷 / 04期

关键词：

REPRODUCTIVE BIOLOGY; PRODUCTION ECOLOGY; POLYPLOIDY; NUTRIENT ENRICHMENT;

D O I：

10.1007/BF02853307

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Generative and vegetative reproduction of diploid and triploid Butomus umbellatus L., and growth and biomass production of both cytotypes under two different nutrient levels were compared. Seedling survival was studied under controlled conditions in a growth chamber; the response of plants to different nutrient conditions was studied in experimental garden. Both cytotypes do not differ in seed germination and seedling survival. Triploids produce more aboveground and underground biomass, more numerous lateral rhizome buds, and have significantly higher flowering stalks. Low generative reproduction (limited seed production) in triploids is compensated for by more intensive vegetative reproduction. High nutrient level appeared to be stressful for plants of both cytotypes: it limits plant groWth and causes plant mortality. Triploids are more viable than diploids in this case, which may be important for their survival under conditions of high trophic level.

引用

页码：413 / 424

页数：12