Journal
JOURNAL OF AGRONOMY AND CROP SCIENCE
Volume 207, Issue 1, Pages 59-73Publisher
WILEY
DOI: 10.1111/jac.12451
Keywords
antioxidants; high SAR; nutritional quality; quinoa; sodium toxicity; stomatal conductance
Categories
Funding
- National Research Programme for Universities (NRPU) research project
Ask authors/readers for more resources
The study showed that soil sodicity has a greater impact on quinoa genotypes than salinity, with higher sodicity levels leading to more Na accumulation and oxidative damage. Genotypes A1 and A7 exhibited higher salt tolerance and better grain nutritional quality compared to Puno and Vikinga.
Soil salinization is a serious environmental problem worldwide. To explore the comparative effects of soil salinity and sodicity on physiological, biochemical and nutritional quality attributes of four quinoa genotypes (A1, A7, Puno, Vikinga), pot and field experiments were performed on non-saline soil and two types of salt-affected soils designated as SS1 (saline) and SS2 (saline-sodic). The results of both the experiments showed similar reduction pattern in biomass (11%-44%), chlorophyll content (10%-36%), stomatal conductance (18%-32%) and grain yield (30%-47%) of four genotypes on SS2 compared with SS1. Higher sodicity level of SS2 resulted in more Na accumulation (23%-40%) and oxidative damage (12%-35% decrease in membrane stability) leading to an increase in the activities of antioxidant enzymes (SOD, POD, CAT) in all the genotypes. Grain mineral contents (except Na and Mg) were decreased more in SS2 than SS1. Multivariate analysis revealed that grain Na content has negative correlation with all the nutritional quality attributes except Mg and fibre contents. Genotypes A1 and A7 were more salt tolerant with better grain nutritional quality than Puno and Vikinga. It is concluded that soil sodicity is more detrimental than salinity, and quinoa genotypes A1 and A7 are better than Puno and Vikinga for cultivation on saline and saline-sodic soils.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available