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Articles by M.S. Chaudhry
Total Records ( 2 ) for M.S. Chaudhry
  M.S. Chaudhry , F.H. Nasim and Abdul G. Khan
  Roots of eleven perennial grass species and their associated rhizosphere soil samples were collected from different rangeland habitats of Cholistan desert and studied for the occurrence of symbiotic arbuscular mycorrhizal (AM) associations of Glomalean fungi with their roots and AM fungal propagules in their rhizospheres. Panicum antidotale roots showed highest percentage of AMF colonization (i.e., 92.75%) while lowest percentage (43.5%) was recorded in the roots of Cyprus conglomeratus. Roots of all the grasses studied had vesicular infection whereas only 27.27% grass species exhibited arbuscular infection. Except Cenchrus biflorus, Dark Septate Endophyte (DSE) fungal hyphae were always present concurrently with the AMF hyphae in the cortices of all the root samples of the grass species studied. Average number of AMF propagules recovered from the rhizospheres of the grasses examined in the present study ranged from 19.33 in Ochthochloa compressa to 356.32 in Cenchrus biflorus. Spores belonging to the Glomus sp. such as G. fasciculatus, G. deserticola and G. agrigatum were the dominant ones among the AMF species encountered in this study. Maximum number of AMF species were recovered from the rhizospheres of Cymbopogon jwarancusa. The potential significance of AMF in the development of mycorrhiza dependent perennial grasses of Cholistan desert is discussed. Researchers could use this knowledge in the revegetation attempts to put a green mantle on the desertified land and to stabilize sand dunes.
  M.S. Chaudhry , G. Sarwar and A. Majeed
  The present study aimed to investigate the ecology of vegetation and to see if the heterogeneity of soil is the main determining factor for the diversity of natural vegetation. Therophytes were the most prominent proportion of life-form spectrum. On the basis of highest IVI three plant communities, Ochthochloa-Cymbopogon- Community, Launaea-Aerva- Community and Lasiurus scindicus-Community were recognized at the three selected habitats. Measurements for ecological indices showed that Launaea-Aerva- Community was more diverse with regard to species number, richness and evenness as compared to the other two plant communities studied. Present results for the pearson moment correlation showed that soil chemical composition may be the main factor not only for array of vegetation but also determines that what type of plant species can grow there. Soil variables were found highly different at all the study sites. We concluded that soil heterogeneity is the major determinant for development of plant communities while climate do not differ much in the area.
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