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VARIATION IN FOLIAR BIOCHEMICAL AND NUTRIENT CONTENTS AMONG PROVENANCES OF ACACIA NILONTICA SSP. INDICA

Bal Krishan and O.P. Toky
Journal of Tropical Forest Science
Vol. 8, No. 1 (September 1995), pp. 78-86
Stable URL: http://www.jstor.org/stable/43582158
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
VARIATION IN FOLIAR BIOCHEMICAL AND NUTRIENT CONTENTS AMONG PROVENANCES OF ACACIA NILONTICA SSP. INDICA
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Abstract

The carbohydrate, starch, chlorophyll and N, P, K, Ca and Mg contents in leaf varied significantly (p<0.05) among 21 provenances of Acacia nilotica ssp. indica, collected from areas throughout its distribution range in India from latitude 11°N to 31°N and altitude from 19 to 650 m. The rankings of provenances for biochemical and nutrient assimilations were different at both 7- and 30-month ages. The greatest concentrations of carbohydrate and chlorophyll were noticed in Roorkee provenance at 7-month age, and in Hisar and Medinipur provenances at 30-month age respectively. The starch content was greatest in Medinipur provenance at both ages. In general, Hisar and Gurgaon provenances had higher contents of nutrients. These provenances also showed superior growth as compared to other provenances in the field. The provenance variations were random, and did not show a significant (p>0.05) relationship with the latitude of the origin source. The observations are useful for selection of provenances for arid and semi-arid conditions. Karbohidrat, kanji, klorofil dan kandungan kepekatan N, P, K, Ca dan Mg di dalam daun, adalah berbagai jenis (p<0.05) di kalangan 21 provenans Acacia nilotica ssp. indica, yang diambii daripada kawasan-kawasan di seluruh kawasan taburan di India daripada latitud 11°N kepada 31°N dan altitud daripada 19 kepada 650 m. Susunan provenans bagi biokimia dan asimilasi nutrien adalah berbeza pada umur 7 dan 30 bulan. Kepekatan karbohidrat dan klorofil yang paling tinggi didapati di dalam provenans Roorkee pada umur 7 bulan, dan di dalam provenans Hisar dan Medinipur masing-masing ketika berumur 30 bulan. Kandungan kanji paling tinggi didapati di dalam provenans Medinipur pada kedua-dua umur. Secara umumnya, provenans Hisar dan Gurgaon mempunyai kandungan nutrien tinggi. Provenans-provenans ini juga menunjukkan pertum-buhan yang terbaik dibandingkan dengan provenans-provenans lain di ladang. Variasi provenans adalah rawak, dan tidak menunjukkan perhubungan yang ketara (p>0.05) dengan latitud sumber-sumber asal. Pemerhatian ini adalah berguna untuk pemilihan provenans bagi keadaan-keadaan gersang dan separagersang.

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