Studies on wheat-azotobacter interaction under pot house conditions
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Date
2008
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Publisher
CCSHAU
Abstract
To study the varietal behaviour of wheat with regard to different strains of
Azotobacter chroococcum, as experiment was conducted in which six varieties of
wheat such as C-306, PBW-343, WH-283, WH-542, WH-147 and WH-711 were
treated with two mutants of A. chroococcum Mac27 and HT54 at three levels of
fertilizer such as O kg N ha-1, 90 kg N ha-1, 120 kg N ha-1 in terms of
agronomical parameters under pot house conditions. Response of wheat varieties
was studied towards A. chroococum in plant height, seed yield, total nitrogen
content and total biomass. Variety C-306 showed best response towards both the
strains of A. chroococcum. Mac27 showed better response as compared to HT54.
Root exudates of these wheat varieties were analyzed for chemotactic behaviour
and other components such as sugars, amino acids, phytohormones and organic
acids. Glutamic acid and some other unidentified amino acids were detected in
both inoculated and uninoculated wheat varieties. Succinic acid was present in
wheat varieties WH-711 and WH-147. Maleic acid and some unidentified organic
acids were detected in inoculated and uninoculated wheat varieties C-306,
PBW-343, WH-283 and WH-542.
Description
Keywords
Wheats, Exudates, Azotobacter, Planting, Application methods, Vegetative propagation, Acidity, Bacteria, Sowing, Biological phenomena