Acacia tortilissubsp.raddianain the North African arid zone: the obstacles to natural regeneration

Autor:	Mohamed Chaieb, Saâd Ouled Dhaou, Fethia Abdallah, Blaise Touzard, Zouhaier Noumi
Rok vydání:	2010
Předmět:	Autotoxicity Acacia Plant Science Natural regeneration Fabaceae Biology biology.organism_classification medicine.disease_cause Arid Horticulture Germination Infestation Botany medicine Arid zone
Zdroj:	Acta Botanica Gallica. 157:231-240
ISSN:	2166-3408 1253-8078
DOI:	10.1080/12538078.2010.10516200
Popis:	The main objective of this study is to determine the possible reasons for regeneration failure of Acacia tortilis subsp. raddiana (Fabaceae). We conducted some laboratory experiments, simulating natural conditions. We estimated rate of infestation of seeds by Bruchidius raddianae and B. aurivillil and tested the autotoxicity effect of leaf extracts (different concentrations) of A. tortilis in the laboratory at 30 °C (optimum germination temperature). Results show that the inhibitory effect on germination increase with the increased leaf extract concentration. At 100% concentration, a significant reduction of germination rate was found compared to other concentrations. On the other hand, the study also revealed a high infestation rate of seeds by B. raddianae and B. aurivillil which reduces the possibility in inhibits natural regeneration in A. tortilis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::09e3a85b112c288e6332a190fc7b192b https://doi.org/10.1080/12538078.2010.10516200 Zobrazit plný text záznamu