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首页> 外文期刊>Journal of Agronomy and Crop Science/Zeitschrift fur acker-und pflanzenbau >Soil sodicity is more detrimental than salinity for quinoa (Chenopodium quinoaWilld.): A multivariate comparison of physiological, biochemical and nutritional quality attributes
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Soil sodicity is more detrimental than salinity for quinoa (Chenopodium quinoaWilld.): A multivariate comparison of physiological, biochemical and nutritional quality attributes

机译：土壤素质比奎奴亚藜（Chenopodium Quinoawilld）的盐度更有害。：生理，生物化学和营养质量属性的多变量比较

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摘要

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.
机译：土壤盐渍化是世界范围内一个严重的环境问题。为了探讨土壤盐分和碱度对四种奎奴亚藜基因型（A1、A7、Puno、Vikinga）生理、生化和营养品质属性的比较影响，在非盐渍土和SS1（盐碱）和SS2（盐碱）两种盐渍土上进行了盆栽和田间试验。两个试验的结果表明，与SS1相比，SS2上四个基因型的生物量（11%-44%）、叶绿素含量（10%-36%）、气孔导度（18%-32%）和籽粒产量（30%-47%）的减少模式相似。在所有基因型中，较高的SS2碱度水平导致更多的钠积累（23%-40%）和氧化损伤（膜稳定性降低12%-35%），导致抗氧化酶（SOD、POD、CAT）活性增加。籽粒矿物质含量（Na和Mg除外）在SS2比SS1下降更多。多变量分析表明，除镁和纤维含量外，籽粒钠含量与所有营养品质指标均呈负相关。A1和A7基因型比Puno和Vikinga更耐盐，粮食营养品质更好。结果表明，土壤碱度比盐度更有害，藜麦基因型A1和A7在盐碱和盐碱土壤上的栽培效果优于普诺和维京加。

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