Variation in chemical contents of seed, and foliage in Albizia lebbek (L.) Benth. of different provenances.
Protein, oil, carbohydrate and starch contents of seeds of 12 provenances of Albizia lebbek [A. lebbeck] collected from sites in north and south India (latitude 9-32°N., longitude 72-85°E., and rainfall 40-400 cm), varied significantly (P<0.05). Seed protein content was positively correlated (r=0.838, P<0.05), and carbohydrate and starch contents were negatively correlated (r=-0.755 and r=-0.623, respectively, P <0.05), with the latitude of the seed source. Significant variation of N, P, K, Ca and Mg in stems and leaves of 1- and 3-yr-old plants was also observed when the provenances were grown at Hisar (29°10′N., 75°46′E., altitude 215 m), an arid region in north India. In general, provenances from north India at 3 yr old had greater chemical and mineral contents than those from south India. Chlorophyll content was highly correlated with the latitude of the seed source at 1- and 3-yr-old (r=0.742 and r=0.659, P<0.05, respectively), while crude protein of foliage at 3 yr old was significantly correlated (r=0.673) with latitude. Dehradun, Jammu and Hisar provenances from the north had comparatively greater concentrations of N, P and K at 3 yr old than those from south India.