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Effects Of Seedling Source Variation On Nitrogen Metabolism And Biomass Production In Albizia Lebbek

Kaur, A., and Husen, A., and Pokhriyal, T.C., (2005) Effects Of Seedling Source Variation On Nitrogen Metabolism And Biomass Production In Albizia Lebbek. Journal of Tropical Forest Science, 17 (4). pp. 557-565. ISSN 0128-1283

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Official URL: http://info.frim.gov.my/cfdocs/infocenter/jtfsonline/jtfs/v17n4/557-565.pdf

Affiliations

Forest Research Institute, Botany Division, Plant Physiology, India
Forest Research Institute, Botany Division, Plant Physiology, India
Forest Research Institute, Botany Division, Plant Physiology, India

Abstract

Seedlings of Albizia lebbek were collected from five different Forest Department nurseries, namely,the forest divisions from Barkot and Lalpani in Dehra Dun; Kalsi in Chakrata; Kiratpur Sahib in Roopnagar (Punjab); and Lalkuan in Haldwani to study the changes in some growth parameters, mineral nutrients (nitrogen, phosphorous and potassium) in different parts of the seedlings and in-vivo nitrate reductase and nitrogenase activity. Overall highest and lowest growth, biomass production and nitrogenase activity were recorded in Barkot and Kalsi sources respectively. The reverse trend was observed for the number of nodules per plant and nitrate reductase activity. The highest and the lowest contents of nitrogen and phosphorous in leaves and stem were recorded in Kalsi and Kiratpur Sahib seedlings respectively. Barkot source exhibited the highest contents of total nitrogen and total phosphorous per seedling whereas total potassium content per seedling was highest in seedlings from Kiratpur Sahib. The physiological changes in the seedling behaviour may be attributed to the variation in the origin of seed and the prevailing edaphic conditions, including rhizospheric microflora.

Anak benih Albizia lebbek dikumpul daripada lima tapak semaian Jabatan Hutan yang berbeza iaitu dari Barkot dan Lalpani di Dehra Dun, Kalsi di Chakrata, Kiratpur Sahib di Roopnagar (Punjap) dan Lalkuan di Haldwani. Tujuannya ialah untuk mengkaji perubahan dalam sesetengah parameter pertumbuhan, nutrien mineral (nitrogen, fosforus dan kalium) dalam bahagian anak benih yang berbeza serta aktiviti nitrat reduktase dan nitrogenase in-vivo. Secara keseluruhan, bacaan tertinggi dan terendah bagi pertumbuhan, penghasilan biojisim dan aktiviti nitrogenase dicerap masingmasing dalam anak benih dari Barkot dan Kalsi. Trend sebaliknya diperhatikan untuk bilangan nodul bagi setiap anak benih dan aktiviti nitrat reduktase. Kandungan tertinggi nitrogen dan fosforus didapati dalam anak benih yang berasal dari Kalsi sementara yang terendah, dari Kiratpur Sahib. Anak benih Barkot menunjukkan kandungan jumlah nitrogen serta jumlah fosforus yang tertinggi bagi setiap anak benih. Bacaan tertinggi bagi jumlah kalium bagi setiap anak benih adalah dalam anak benih Kiratpur Sahib. Perubahan fisiologi dalam anak benih dikaitkan kepada variasi tempat asal anak benih serta keadaan edafik sedia ada, termasuklah mikroflora rizosfera.

Item Type:Journal
Additional Information:The first author acknowledges the Council of Scientific and Industrial Research, New Delhi for financial assistance.
Keywords:Nitrogenase, nitrate reductase, nitrogen, phosphorous, potassium, forests and forestry, India
Subjects:S Agriculture, Forestry
ID Code:9152

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