PJB-1990-28
EFFECT OF SALINITY ON RESOURCE ALLOCATION PATTERN OF INDIGOFERA OBLONGIFOLIA FORSK., A PALATABLE DESERT LEGUME
D. KHAN AND
R. AHMAD
Abstract
Resource allocation pattern of Indigofera
oblongifolia Forsk., was studied in relation to salinity. The plant responded to salinity plastically and tended to enter the reproductive phase little earlier. Reproductive allocation (RA) declined progressively with increase of salts in the root zone. There was proportionate increase in vegetative allocation (VA). Net reproductive effort (NRE) of the treated plants declined to 0-
4.5% in comparison to that 0-12% in the control. Number of pods and seeds per plant declined with salinity. Number of seeds per pod
remained unaffected and averaged four. The distribution of seeds among pods was distinctly normal I. oblongifolia, with more vegetative growth, appears to be a K-strategist on the r-K- continum and to fall in the category of S- strategist on R-C- and S- strategy model.
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