Ascorbic acid metabolism in ageing recalcitrant sal (Shorea robusta Gaertn. f.) seeds.

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dc.contributor.authorChaitanya, K Sen_US
dc.contributor.authorNaithani, Ren_US
dc.contributor.authorNaithani, S Cen_US
dc.date.accessioned2009-05-28T15:26:55Z
dc.date.available2009-05-28T15:26:55Z
dc.date.issued2000-10-28en_US
dc.description.abstractChanges in ascorbate content and its enzymatic utilization pattern were studied in embryonic axes and cotyledons of sal seeds undergoing rapid loss of viability, at ambient conditions. Ascorbate levels were significantly higher initially in the embryonic axes (0.32 mg/g fresh weight) and cotyledons (0.21 mg/g fresh weight) of freshly mature, relatively hydrated (42.2% moisture content) and 100% viable sal seeds. It declined sharply as the tissues; embryonic axes and cotyledons, desiccated with absolutely no detectable amount in non-viable seeds (21% moisture content). Significantly strong correlation was obtained between desiccation of embryonic axes (r = 0.96) and cotyledon (r = 0.97) with loss of ascorbate levels and loss of germinability. Higher rates of ascorbic acid utilization (AAU) recorded in the embryonic axes of 100% viable seed declined sharply as the seed viability reduced due to desiccation below 36.8% moisture content. AAU was not detected in the cotyledons.en_US
dc.description.affiliationSeed Biology Lab, School of Life Sciences, Pt. Ravishankar Shukla University, Raipur 492 010, India.en_US
dc.identifier.citationChaitanya KS, Naithani R, Naithani SC. Ascorbic acid metabolism in ageing recalcitrant sal (Shorea robusta Gaertn. f.) seeds. Indian Journal of Experimental Biology. 2000 Oct; 38(10): 1031-5en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/61991
dc.language.isoengen_US
dc.source.urihttps://www.niscair.res.in/ScienceCommunication/ResearchJournals/rejour/ijeb/ijeb0.aspen_US
dc.subject.meshAscorbic Acid --metabolismen_US
dc.subject.meshRosales --embryologyen_US
dc.subject.meshSeeds --metabolismen_US
dc.titleAscorbic acid metabolism in ageing recalcitrant sal (Shorea robusta Gaertn. f.) seeds.en_US
dc.typeJournal Articleen_US
dc.typeResearch Support, Non-U.S. Gov'ten_US
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