Record ID No. |
787 |
Author(s) |
Hasan A., Khan M.N. , 2006 |
Affiliation |
Department of Nematology and Plant Pathology Respectively, Nardenra Deva University of Agriculture and Technology, Kumarganj, Faizabad, Uttar Pradesh - 224 229, India. |
Title |
Seasonal dynamics of vesicular arbuscular mycorrhiza and parasitic nematode Helicotylenchus indicus on phalsa |
Source. Vol.(no):Page |
Mycorrhiza News. 18(3): 9-12p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Nematodes |
Host |
Grewia subinaequalis |
Organism |
Helicotylenchus indicus, Glomus mosseae, G. fasciculatum, Gigaspora margarita, G. gigantea and Acaulospora laevis |
Country |
India, South Asia |
Abstracts |
The population dynamics of vesicular arbuscular mycorrhizas (VAM) and parasitic nematode, Helicotylenchus indicus, on phalsa (Grewia subinaequalis) with respect to seasons was studied. Results showed that mycorrhizal colonization, sporulation and H. indicus nematode population density increased from June through September 2003, decreased from October 2003 through January 2004, started to increase again from February 2004 through April 2004 (except nematode population which decreased) and finally decreased again during the month of May 2004. The highest amount of VAM colonization (63.2%) on phalsa root was observed during the month of April, sporulation (285.6 spores/100 g soil) during September and H. indicus population density (335.3/100 g soil) during August. It appears that seasons had a distinct impact on VAM and H. indicus nematode. Mycorrhizal colonization (50%), sporulation (201.1 spores/100 g soil) and nematode density (244.3/100 g soil) were highest during the rainy season. VAM fungi appeared to be less diversified as only a few species such as Glomus mosseae, G. fasciculatum, Gigaspora margarita, G. gigantea and Acaulospora laevis were observed. |