Apr 13, 2020

Distributional Range, Population variability and ecology of Striga aspera in Kogi state

BioRxiv : the Preprint Server for Biology
Fouzia AshrafMahmood Shaukat

Abstract

Hemiparasitic Striga (Orobanchaceae) commonly called witchweed is native to tropical Africa. Striga aspera parasitizes wild grasses and its distribution range in Nigeria extends from the Sudan savanna to Guinea Savanna to the southern limit of the Derived savanna just before the forest belt is reached. This study aims to identify and delineate the incidence and distribution range and infestation patterns of Striga aspera within the different floristic areas within in Kogi State (Southern Guinea Savanna) and to establish if vegetation type and edaphic have potential influences on Striga presence. To determine the distribution range and potential hosts of Striga aspera, several opportunistic road reconnaissance surveys were conducted traversing six major towns in Kogi State (Kabba, Okene, Lokoja, Idah, Ayingba and Igala-mela) from July to September, 2015. Identified Striga infested sites were georeferenced and subjected to further vegetation analysis obtained from randomly placed 0.5 m x 0.5 m quadrats in triplicates and compared with adjoining uninfected control sites. Data for the following attributes were collected: density, relative frequency, relative density and summed dominance ratio. To isolate and determine potential Str...Continue Reading

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