ALLELOPATHY AS A FACTOR IN SUCCESS OF HELIANTHUS-MOLLIS-LAM

被引：12

作者：

ANDERSON, RC

KATZ, AJ

ANDERSON, MR

机构：

[1] Department of Biological Sciences, Illinois State University, Normal, Illinois

来源：

JOURNAL OF CHEMICAL ECOLOGY | 1978年 / 4卷 / 01期

关键词：

allelopathy; bioassay; competition; Helianthus mollis; osmotic potential;

D O I：

10.1007/BF00988255

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A method to rapidly screen species suspected of producing allelochemics, using results from simple bioassay tests, is presented. By measuring the osmotic potential of H. mollis extracts and using mannitol solutions of comparable osmotic potential, the influence of osmotic potential in the bioassay was eliminated. Nested analysis of variance was used to examine the separate influences of (1) extract concentration, (2) source of plants used in extract preparation (edge or center of clones) (3) osmotic potential of the extract, and (4) the differential development of radicles and shoots of species used in the bioassay tests. Bioassay tests for allelopathy showed that extracts made of whole H. mollis plants significantly inhibited both radicle and shoot development of radish and wheat, but only the radicle of little bluestem. There was a significant increase in the inhibition of radish shoots and wheat radicles at high concentration of the extract, but the radicle of little bluestem was inhibited more at the lower concentration. Extracts prepared from plants collected from the clone center inhibited radish radicle development significantly more than extracts made of plants growing at the clone edge. © 1978 Plenum Publishing Corporation.

引用

页码：9 / 16

页数：8

共 10 条

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