Showing papers by "Deen Dayal Upadhyay Gorakhpur University published in 1974"

Studies on the nodulation and nitrogen fixation by infected leguminous plants

Abstract: The effect of arhar mosaic virus strains (ASM & AMM) infection on the growth, nitrogen value, nodulation and nitrogen-fixing capacity of Vigna sinensis Savi (cowpea), Phaseolus aureus Roxb. (mung) and Phaseolus mungo L. (urd) has been studied. Both the strains lowered the growth and fresh weight of infected plants in comparison to healthy plants. The dry weight, of ASM and AMM strains-infected mung and urd plants, increased but it was reduced in diseased cowpea plants. The anhar mosaic virus infection decreased the number, weight and size of nodule in cowpea and mung but increased the nodule number and fresh weight in urd plants.

Molecular - weight distribution in Graham's salt: Dependence on conditions of formation

Abstract: A detailed study of the distribution of molecular weights in several samples ofGrahams salt, a long-chain polyphosphate, prepared under different conditions, has been presented. The samples were prepared by heating sodium dihydrogen phosphate at fixed temperatures of 700 and 800 °C and quenching the melt after heating for various durations of time. The distribution curves clearly show a marked dependence on the conditions offormation. For the same duration of time an increase in temperature broadens the distribution. Similarly, for the same temperature of heating the increase in time ofheating also broadens the distribution.