test
Search publications, data, projects and authors

Article

English

ID: <

10670/1.ey4xxp

>

·

DOI: <

10.34117/bjdv5n10-347

>

Where these data come from
Tolerance to salinity in Jatropha curcas are genotype-dependent/The salinity tolerance in manso pine nuts is dependent on the genotype

Abstract

Dissonant results in Jatropha curcas tolerance to salinity obtained by different research groups in several countries suggest that tolerance is connected to variation of the genetic origin of the genotypes used. To verify this hypothesis, this work compared the physiological, photochemical and nutritional responses of different genotypes from J. curcas under to saline stress. Seeds of six genotypes of J. curcas (CNPAE112, CNPAE114, JCAL171, CNPAE183, CNPAE218, and CNPAE304) were germinated and fertirigated for three months with a Hoagland nutrient solution at 50%. After that, the plants received different concentrations of NaCl (0, 250, 500 and 750 mM) added to the nutritious solution for 48 h (maximum stress). Later, the salt was washed out from the substrate with solutions free from NaCl for 914 h to plant recovery. Gas exchanges, fluorescence chlorophyll a, osmotic potential and concentration of macro- and micronutrients of leaves were quantified. Physiological analyzes showed that genotypes CNPAE112, CNPAE114, and JCAL171 were more tolerant to salt stress due to complete recovery of their gas exchange rates after transferring plants to salt-free media. The genotypes CNPAE218 and CNPAE304 were more sensitive to saline stress, showing no recovery of the gas exchange and no recovering of maximum quantum efficiency of PSII, besides having high concentrations of Na+ in leaf after transferring plants to salt-free media. The genotype CNPAE183 was shown to be intermediate to the two previously situations. Therefore, we can suggest that CNPAE112, CNPAE114, and JCAL171 presented higher tolerance to saline stress, while CNPAE218, CNPAE304 showed to be more sensitive.

Your Feedback

Please give us your feedback and help us make GoTriple better.
Fill in our satisfaction questionnaire and tell us what you like about GoTriple!