000			01589nam a2200265Ia 4500
008			220216s9999 xx 000 0 und d
100			_aSobhana P
245		0	_aVariation in mineral composition of leaves and its relationship with photosynthesis and transpiration in polyclonal seedlings of Hevea brasiliensis
260			_bIndian Journal of Natural Rubber Research _c1996
300			_a48-54
520			_aPolyclonal seedlings of Hevea brasiliensis were examined for differences in major nutrient contents of leaves, photosynthetic CO2 exchange rate (CER) and associated characteistics and biomass production. In spite of the application of equal doses of N, P and K to all the plants, considerable variations were observed in leaf N, P and K contents indicating the genotypic variation in absorption of mineral nutrients. Leaf N, P and K per unit leaf area exhibited significant positive correlations with CER, stomatal conductance (gs) and transpiration rate. Leaf nutrient content showeed positive relationship with the instantaneous water use efficiency of leaves. Leaves of the polyclonal seedlings also showed appreciable variation in mineral composition, photosynthetic rate and water use efficiency.
650			_aHevea brasiliensis
650			_aHevea brasiliensis
650			_aShoot biomass
650			_aShoot biomass
650			_aTranspiration
650			_aTranspiration
650			_aWater use efficiency
650			_aWater use efficiency
700			_aDey S K
700			_aGeorge E S
700			_aJacob J
700			_aSethuraj M R
942			_cAR
999			_c47061 _d47061