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Calcium in Relation to Respiratory Activity of Peanut and Linseed Plants

1973; Elsevier BV; Volume: 164; Issue: 3 Linguagem: Inglês

10.1016/s0015-3796(17)30694-7

0015-3796

R. N. Pal, Vindya Rai, Malini Laloraya,

Plant Genetic and Mutation Studies

The present study deals with the changes in respiratory activity of peanut (Arachis hypogaea var. Big Japan) and linseed (Linum usitatissimum var. NP [RR] 5) plants as influenced by different levels of calcium employing sand culture technique. It has been shown that low levels of calcium cause stimulation of leaf respiration. Under complete deficiency of calcium, however, while high respiration rate is observed in linseed leaves; in case of peanut plants the respiration rate is almost similar to that of control at most harvests. Furthermore, it has been observed that magnitude of increase in respiration varies with the age of the plant. In peanut plants, high levels of calcium though initially results in promotion of respiration but at later stages of growth it shows inhibitory effects. In case of linseed plants, initially there is an inhibition which seems to recover at subsequent growth periods.