SciELO - Scientific Electronic Library Online

 
vol.77 número2In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditionsEffects of exogenous Ca 2+ on photosynthetic characteristics and fruit quality of pepper under waterlogging stress índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Chilean journal of agricultural research

versão On-line ISSN 0718-5839

Resumo

DAI, Ling-Yan et al. Seed priming mitigates the effects of saline-alkali stress in soybean seedlings. Chilean J. Agric. Res. [online]. 2017, vol.77, n.2, pp.118-125. ISSN 0718-5839.  http://dx.doi.org/10.4067/S0718-58392017000200118.

Soda saline-alkali soil has double adverse effects on growth, morphogenesis and yield of the crops by creating a salinity stress and a high pH value in the rhizosphere surroundings of the plant. Seed priming can be an effective approach to enhance stress adaptation in seedlings growing in salinity stressed conditions. The present study examined the role of hydropriming and comprehensive seed priming with ZnSO4, CaCl2, betaine hydrochloride and GA3 to enhance the soda saline-alkali tolerance in soybeans (Glycine max [L.] Merr.) seedlings. An unprimed control treatment was also maintained for comparison. The results show that two seed priming treatments can effectively mitigate the negative effects of soda saline-alkali stress. Nevertheless, compared with hydropriming, soybean seedlings from the comprehensive seed priming treatment had better growth performance through accumulation of soluble sugar and free proline contents, enhancing the activities of superoxide dismutase (SOD) and catalase (CAT), decreasing the malondialdehyde (MDA) content formed from lipid peroxidation, increasing the photosynthetic pigment contents, maintaining a better membrane integrity of the chloroplasts and mitochondria, and generating more starch grains in the chloroplasts of spongy mesophyll cells under soda saline-alkali stress. In conclusion, our results suggest that soybean seedlings from comprehensive seed priming exhibited a higher tolerance to soda saline-alkali stress than the unprimed control treatment.

Palavras-chave : Comprehensive seed priming; Glycine max; hydropriming; physiological property; tolerance..

        · texto em Inglês     · Inglês ( pdf )