TY  - BOOK
AU  - Sobhana P
AU  - Dey S K
AU  - George E S
AU  - Jacob J
AU  - Sethuraj M R
TI  - Variation in mineral composition of leaves and its relationship with photosynthesis and transpiration in polyclonal seedlings of Hevea brasiliensis
PY  - 1996///
PB  - Indian Journal of Natural Rubber Research
KW  - Hevea brasiliensis
KW  - Shoot biomass
KW  - Transpiration
KW  - Water use efficiency
N2  - Polyclonal 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
ER  -