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Response of sesame seedlings to different concentrations of humic acids or calcium nitrate at germination and early growth

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dc.contributor.author Souguir, M.
dc.contributor.author Hannachi, C.
dc.date.accessioned 2021-04-21T12:21:26Z
dc.date.available 2021-04-21T12:21:26Z
dc.date.issued 2017-04-14
dc.identifier.citation Souguir, M., C. Hannachi. 2017. ”Response of sesame seedlings to different concentrations of humic acids or calcium nitrate at germination and early growth”. Cercetări Agronomice în Moldova 50 (1): 65-77. DOI: 10.1515/cerce-2017-0005. en_US
dc.identifier.uri https://repository.uaiasi.ro/xmlui/handle/20.500.12811/907
dc.description.abstract This study was conducted in order to evaluate the response of sesame seeds (Sesamum indicum L.) to organic or mineral fertilization. The effects of two fertilizers, which were calcium nitrate and humic acids were studied separately at germination and early seedlings growth. Different concentrations of humic acids (HA0: 0, HA1: 500, HA2: 1000 and HA3: 2000 mg L–1) or calcium nitrate (CaN0: 0, CaN1: 50, CaN2: 100 and CaN3: 200 mg L–1) were applied distinctly to the growth media. The experimental design was accomplished in a completely randomized block design with three replications. Germination measurements, seedlings length, fresh seedling weight, total chlorophylls and carotenoids, total soluble proteins and sugars were determined. Results showed that humic acids applied at 1000 mg L-1 or calcium nitrate applied at 100 mg L-1 reduced the mean germination time (3.5 and 3.61 days) and had the highest germination index (GI) and the highest coefficient of velocity (CV). The longest seedling was obtained at the concentrations HA2 and CaN2 (+22%). Total chlorophyll and carotenoids were significantly higher in seedlings receiving the HA2 and CaN2 and these treatments increased total soluble proteins content by 32%. Higher concentrations of humic acids or calcium nitrate HA3 and CaN3 delayed germination and enhanced proline and total soluble sugars, respectively, by 42% and 46%, compared to control. These preliminary results indicated that the use of fertilizers should be optimized and they can be transformed at high level to an abiotic stress menacing plant productivity. On the other hand, suitable concentrations of fertilizers can be used in the future as a remedy to improve growth under abiotic stress. en_US
dc.language.iso en en_US
dc.publisher "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iași en_US
dc.subject humic acids en_US
dc.subject calcium nitrate en_US
dc.subject proline en_US
dc.subject soluble sugars en_US
dc.subject soluble proteins en_US
dc.title Response of sesame seedlings to different concentrations of humic acids or calcium nitrate at germination and early growth en_US
dc.type Article en_US
dc.author.affiliation M. Souguir, C. Hannachi, Higher Agronomic Institute of Chott-Mariem, Department of Horticultural Sciences, Chott-Mariem, Tunisia
dc.publicationName Cercetări Agronomice în Moldova
dc.volume 50
dc.issue 1
dc.publicationDate 2017
dc.startingPage 65
dc.endingPage 77
dc.identifier.eissn 2067-1865
dc.identifier.doi 10.1515/cerce-2017-0005


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