B.Y. Derbew1* , A.N. Mokashi2 , C.P. Patil2 and R.V. Hegde2
1College of Agriculture, Jimma University, P.O.Box 307, Jimma, Ethiopia
2 University of Agricultural Sciences, Dharwad 580 005, Karnataka, India
Abstrsact
A pot culture experiment was conducted during 2004-2006 at the College of Agriculture, Uni-versity of Agricultural Sciences, Dharwad, to investigate effect of arbuscular mycorrhizal (AM) fungus (Glomus fasciculatum) inoculation at different salinity levels (0.52, 1.90, 4.33, 6.23 and 7.94 dSm-1) on root colonization, growth and chlorophyll content of four grape rootstocks (Salt Creek, Dogridge, St. George and 1613). The extent of AM response on root colonization, growth and chlorophyll content varied with rootstock species, and with the level of salinity. AM fungus inoculated plants showed significantly higher root colonization percentage, root volume, root length, number of leaves, leaf area, total dry weight, and chlorophyll content. Ex-posure to salinity stress resulted in decreased root colonization, chlorophyll content and growth of shoots on all rootstocks, but reduction in growth was greatest on St. George.
Key words: chlorophyll, grape, mycorrhiza, root colonization,rootstock, salinity
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* - Correspondant Author |
