NITROGEN FIXATION AND NODULATION BEHAVIOUR IN RELATION TO SEED SOURCE VARIATIONS IN <em>DALBERGIA</em> <em>SISSOO</em> SEEDLINGS

Authors

  • N. Singh & T.C. Pokhriyal

Keywords:

Nitrogen fixation, nodulation behaviour, seed source, variations, Dalbergia sissoo

Abstract

Nitrogen fixing abilities of six Dalbergia sissoo seed sources, namely, Sibsagar (Assam), Tulsipur-Gonda, Chiriyapur, Hissar (Haryana), Simblewala (Jammu and Kashmir) and Kankai (Nepal), from the entire distribution range of this species in India and Nepal were studied at the Forest Research Institute, Dehra Dun (32° 20' 40" N latitude, 77° 52' 12" longitude), India from 1997 to 1999. Significant differences in nodulation behaviour, nitrogenase activity and soil nitrogen accretion were observed between different seed sources. Maximum nodule biomass and nitrogen fixation were recorded in Gonda seed source followed by Nepal, Chiriyapur, Jammu, Hissar and minimum in Assam. A positive correlation was noticed between nodule number and its biomass with nitrogen fixation ability. The differences were discernible and pronounced only during the second year of growth. These are important to exploit the genetic variability among different seed sources of D. sissoo in amelioration of degraded sites.

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Published

2022-08-23

How to Cite

N. Singh & T.C. Pokhriyal. (2022). NITROGEN FIXATION AND NODULATION BEHAVIOUR IN RELATION TO SEED SOURCE VARIATIONS IN <em>DALBERGIA</em> <em>SISSOO</em> SEEDLINGS. Journal of Tropical Forest Science (JTFS), 14(2), 198–206. Retrieved from https://jtfs.frim.gov.my/jtfs/article/view/1278

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Articles
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