Allelopathic effects of aqueous extracts of Aristoluchia esperanzae O.Kuntze on development of Sesamum indicum L. seedlings

被引：50
作者：
Gatti, Ana Beatriz [2 ]
Ferreira, Alfredo Gui [1 ]
Arduin, Marcos [3 ]
Gualtieri de Andrade Perez, Sonia Cristina [3 ]
机构：
[1] Univ Fed Rio Grande do Sul, Biosci Inst, Dept Bot, Porto Alegre, RS, Brazil
[2] Univ Fed Sao Carlos, Grad Program Ecol & Nat Resources, BR-13560 Sao Carlos, SP, Brazil
[3] Univ Fed Sao Carlos, Ctr Biol & Hlth Sci, Dept Bot, BR-13560 Sao Carlos, SP, Brazil
来源：
ACTA BOTANICA BRASILICA | 2010年 / 24卷 / 02期
关键词：
Papo-de-peru; allelopathy; root growth; xylem development; savanna; LEAF EXTRACTS; GROWTH; GERMINATION; ACID; PHYTOTOXICITY; MUSTARD; SEED;
D O I：
10.1590/S0102-33062010000200016
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
(Allelopathic effects of aqueous extracts of Aristoluchia e.speranzae O.Kuntze on development of Sesamum indicum L. seedlings). Aristolochia e.speranzae is a climbing plant that occurs in the savanna regions of Brazil. The aim of this work was to identify the effects of aqueous extracts of A. esperanzae on germination, root growth and xylem cell development of sesame seedlings. Leaf and shoot extracts were prepared at concentrations of 1.5 and 3%. Extracts caused marked changes in germination and seedling growth with greatest inhibition produced by root extracts. Morphological changes and decreased growth and development of seedlings were also observed. The extracts of A. esperanzae caused a reduction of 50% in the size of root xylem cells and marked changes in the primary root and in the number of secondary roots.
引用
收藏
页码：454 / 461
页数：8
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