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dc.contributor.authorDANTAS, B. F.eng
dc.contributor.authorMATIAS, J. R.eng
dc.contributor.authorLOPES. A. P.eng
dc.contributor.authorARAGÃO, C. A.eng
dc.date.accessioned2019-06-15T00:42:18Z-
dc.date.available2019-06-15T00:42:18Z-
dc.date.created2019-06-14
dc.date.issued2019
dc.identifier.citationBioscience Journal, Uberlândia, v. 35, n. 3, p. 763-774, 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1109869-
dc.descriptionSalinity is one of the most limiting environmental factors for plant growth in semi-arid regions.Excessofsalts reduces water potential, causes physiological drought and can influence germination and initial growth of plants. The objective of this work was to study physiological and metabolic changes in seeds and seedlings of pumpkin (Cucurbita pepo cultivars Caserta and Redonda and C. maxima cv. Coroa)in a saline condition of salt stress. Thus, we it was quantified germination parameters; seedlings growth; seeds and seedlings respiration; degradation of total soluble sugars, reducing sugars and total proteins in cotyledons and the activity ascorbate peroxidase (APX), glutathione-S-transferase (GST) and catalase (CAT) during germination and initial growth of the pumpkin species studied in saline conditions. The experimental design was totally randomized in a factorial scheme 6x3, with six electrical conductivities (0; 2; 4; 6; 8 e 10 dS.m-1) and three cultivars (Redonda, Caserta and Coroa). Salinity did not influence the rate of seed respiration during the germination, although seedlings respiration decreased, as well as its vigour. Total sugars were degraded, while there was accumulation of reducing sugars and proteins in cotyledons of germinating seeds in salt solutions. Increased electrical conductivity reduced APX activity in the embryo and CAT in cotyledons, but did not influence GST. Pumpkin seedlings showed low tolerance to salt stresseng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEstresse salinoeng
dc.titlePhysiological changes in seeds and seedlings of pumpkins submitted to salt stress.eng
dc.typeArtigo de periódicoeng
dc.date.updated2019-12-02T11:11:11Z
dc.subject.thesagroAbóboraeng
dc.subject.thesagroSementeeng
dc.subject.thesagroHortaliça Cucurbitáceaeng
dc.subject.thesagroCucurbitaceaeeng
dc.subject.thesagroCondutividade Eletricaeng
dc.subject.thesagroCucúrbita Pepoeng
dc.subject.thesagroCucúrbita Máximaeng
dc.subject.thesagroSalinidadeeng
dc.subject.nalthesaurusCucurbitaeng
dc.subject.nalthesaurusPumpkinseng
riaa.ainfo.id1109869eng
riaa.ainfo.lastupdate2019-12-02 -02:00:00
dc.identifier.doi10.14393/BJ-v35n3a2019-41887eng
dc.contributor.institutionBARBARA FRANCA DANTAS, CPATSA; JANETE RODRIGUES MATIAS; ARMANDO PEREIRA LOPES; CARLOS ALBERTO ARAGÃO.eng
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