Tropical Plant Research
An International Journal by Society for Tropical Plant Research
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2017, VOLUME 4 ISSUE 1Pages: 90-94
Nitrate reductase and peroxidase activity in growth and productivity of Santalum album L.
Pramod Kumar*, Randhir Kumar and S. A. Ansari
*Tropical Forest Research Institute, PO- R.F.R.C., Mandla Road, Jabalpur, Madhya Pradesh, India
Abstract:
Santalum album is an important oil bearing species contains 4–6% oil rich in α-santalol and β-santalol. Accessing genetic variation within the population, 30 sandal trees of different age and girth were evaluated for their leaf nitrate reductase (NR) activity and peroxidase activity. A significant variation in leaf NR activity and peroxidase activity in selected trees was observed. NR activity ranges from 0.062 to 0.219 µmol NO2- g.fr.wt-1.h-1 and peroxidase activity from 15.400 to 69.480 ∆470 min-1mg-1protein. However, correlation of girth of the trees (GBH) with NR and peroxidase activity was not significant thus, these three parameters are independently affecting the growth and oil yielding capacity. The maximum phenotypic and genotypic coefficient of variance was recorded for peroxidase activity (PCV 58.02, GCV 29.16) followed by NR activity (PCV 30.68, GCV 28.03). More PCV for both NR and peroxidase activity indicates that the variation is influenced by the environment.
Santalum album is an important oil bearing species contains 4–6% oil rich in α-santalol and β-santalol. Accessing genetic variation within the population, 30 sandal trees of different age and girth were evaluated for their leaf nitrate reductase (NR) activity and peroxidase activity. A significant variation in leaf NR activity and peroxidase activity in selected trees was observed. NR activity ranges from 0.062 to 0.219 µmol NO2- g.fr.wt-1.h-1 and peroxidase activity from 15.400 to 69.480 ∆470 min-1mg-1protein. However, correlation of girth of the trees (GBH) with NR and peroxidase activity was not significant thus, these three parameters are independently affecting the growth and oil yielding capacity. The maximum phenotypic and genotypic coefficient of variance was recorded for peroxidase activity (PCV 58.02, GCV 29.16) followed by NR activity (PCV 30.68, GCV 28.03). More PCV for both NR and peroxidase activity indicates that the variation is influenced by the environment.
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