The correlation between the efficiency of rhizobia and nitrate reductase and dehydrogenase activities of cowpea nodules
Abstract: cowpea seeds variety fettriat were planted in minle silt soil and inoculated with 5 strains of cowpea rhizobia. After 50 and 80 day, the plants were uprooted, analyses for dry weight, total nitrogen, fresh weight of nodules, nitrate reductase activity in the leaves, and nitrate reductase and dehydrogenase activities in the nodule homogenate in the presence or absence of succinate, eitrate, and ethel alchol. The data were analysed to establish the correlation coefficients between total nitrogen and other characteristics .
A significant positive correlation existed between total nitrogen and fresh weight of nodules in both cuts ( after 50 and 80 days.). the correlation was significant between total nitrogen and dray weight of the plants in the first cut, but was non significant in the second one.
Nitrate reductase activity in leaves and nodule homogenates in the presence of different hydrogen donors were positively correlated in the first cut and negatively correlated in the second one. Nitrate reduetase activity in the leaves was much less than in the nodule homogenates. A negative cut, while the correlation between total nitrogen and dehydrogenase activity in the presence of citrate or absence of any hydrogen donovs was positive, it was negative, with ethanol and succinate, Ir the second cut, however, all the dehydrogenase activities were negatively correlated with total nitrogen.
Publication year 1978
Pages pp. 408-413
Organization Name
serial title Zbi.Bakt.II.Abt
Author(s) from ARC
Agris Categories Weeds and weed control
AGROVOC
TERMS		 Citrates. Rhizobiaceae. Succinate dehydrogenase.
Proposed Agrovoc nirtrate reductase;dehydrogenase acitivity;
Publication Type Journal
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