Low iron stress nutrition for evaluation of Fe-efficient genotype physiology, photosynthesis, and essential monoterpene oil (s) yield of Ocimum sanctum

Misra, A.; Dwivedi, S.; Srivastava, A.K.; Tewari, D.K.; Khan, A.; Kumar, R.

Photosynthetica 44(3): 474-477

2006


ISSN/ISBN: 0300-3604
DOI: 10.1007/s11099-006-0054-1
Accession: 012276185

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Abstract
Genotypic variations were observed among 6 variants and an indigenous one as a control. An efficient genotype OCD(L) of Ocimum sanctum had the greatest content of chlorophylls [2.15 g kg-1(FM)], Chl a/b ratio of 1.86, net photosynthetic rate of 0.72 mg(CO2) m-2 s-1, and 1.56% oil formation. Methyl chavicol formed 50.31% of total oil in OSP-6 genotype, which had also maximum peroxidase activity [ Delta OD 2.4 mg-1(protein)] and maximum production of eugenol (30.44% of total oil). We found an oxido-reducible reaction of peroxidase and high bands of peroxidase isoenzymes in this OSP-6 genotype for the formation of monoterpene essential oil(s) and possibly the major constituents of eugenol through the high production of photosynthates.

Low iron stress nutrition for evaluation of Fe-efficient genotype physiology, photosynthesis, and essential monoterpene oil(s) yield of Ocimum sanctum