Screening of quinoa (Chenopodium quinoa Willd.) germplasms under high-SAR saline water on the basis of growth, yield, and multivariate analysis

IF 2.1 4区生物学 Q2 BIOLOGY Journal of Biosciences Pub Date : 2024-01-22 DOI:10.1007/s12038-023-00396-6

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Abstract

Increasing soil and underground water salinization with decreasing availability of fresh water has become a potential threat to sustainable crop production in arid and semi-arid areas globally. Introduction and evaluation of salt-tolerant halophytic crops is one of the sustainable ways to preserve productivity in saline ecosystems. This study was aimed to screen quinoa germplasms under high-sodium adsorption ratio (SAR) saline stress. Thirteen quinoa germplasms were evaluated under four levels [best available water (BAW), 8, 16, and 24 dSm⁻¹] of high-SAR saline water irrigation. The evaluation was carried out based on growth, yield, and ionic content parameters along with statistical tools such as multivariate analysis, salt tolerance indices, and correlation. The results showed that the salinity levels of 16 and 24 dSm⁻¹ resulted in increase of chlorophyll content relative to BAW and 8 dSm⁻¹. The germplasm CSQ2 recorded the highest proline content (163.7 mg g⁻¹ FW) at 24 dSm⁻¹. Increasing levels of salinity reduced relative water content in plant leaves, and the germplasm CSQ2 showed minimal reduction of 4% at 24 dSm⁻¹. Na⁺ and K⁺ contents in the plants increased with increasing salinity levels, while the K⁺/Na⁺ ratio decreased. The grain yield of quinoa germplasms ranged between 3.5 and 14.1 g plant⁻¹. The germplasm EC507740 recorded the highest grain yield (7.0 g plant⁻¹) followed by CSQ1 and CSQ2 at a maximum stress of 24 dSm⁻¹. Principal component analysis (PCA) and correlation elucidated that Na⁺ content in plants was negatively correlated with all the studied traits except SPAD, proline content, and K⁺ content. The different salt tolerance indices indicated that the germplasms EC507740, CSQ1, CSQ2, EC507738, and IC411825 were more stable at high-SAR salinity, while PCA showed the germplasms EC507740 and CSQ2 as the most salt-tolerant germplasms.

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根据生长、产量和多元分析筛选高SAR盐水条件下的藜（Chenopodium quinoa Willd.）品种

摘要随着淡水供应的减少，土壤和地下水盐碱化的加剧已成为全球干旱和半干旱地区可持续作物生产的潜在威胁。引进和评估耐盐碱作物是在盐碱生态系统中保持生产力的可持续方法之一。本研究旨在筛选高钠吸附率（SAR）盐碱胁迫下的藜麦种质。在四种水平（最佳可用水（BAW）、8、16 和 24 dSm-1）的高 SAR 盐水灌溉下，对 13 个藜麦种质进行了评估。评估基于生长、产量和离子含量等参数，并采用了多元分析、耐盐性指数和相关性等统计工具。结果表明，与 BAW 和 8 dSm-1 相比，16 和 24 dSm-1 的盐度水平导致叶绿素含量增加。种质 CSQ2 在 24 dSm-1 时脯氨酸含量最高（163.7 mg g-1 FW）。盐度增加会降低植物叶片的相对含水量，种质 CSQ2 在 24 dSm-1 时的降幅最小，仅为 4%。植株中的 Na+ 和 K+ 含量随着盐度的升高而增加，而 K+/Na+ 比值则有所下降。藜麦种质的谷物产量介于 3.5 至 14.1 克植株-1 之间。在最大压力为 24 dSm-1 时，种质 EC507740 的谷物产量最高（7.0 克植株-1），其次是 CSQ1 和 CSQ2。主成分分析（PCA）和相关性分析表明，除 SPAD、脯氨酸含量和 K+ 含量外，植物中 Na+ 含量与所有研究性状均呈负相关。不同的耐盐指数表明，EC507740、CSQ1、CSQ2、EC507738和IC411825在高SAR盐度条件下更稳定，而PCA表明EC507740和CSQ2是最耐盐的种质。

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来源期刊

Journal of Biosciences 生物-生物学

CiteScore

5.80

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： The Journal of Biosciences is a quarterly journal published by the Indian Academy of Sciences, Bangalore. It covers all areas of Biology and is the premier journal in the country within its scope. It is indexed in Current Contents and other standard Biological and Medical databases. The Journal of Biosciences began in 1934 as the Proceedings of the Indian Academy of Sciences (Section B). This continued until 1978 when it was split into three parts : Proceedings-Animal Sciences, Proceedings-Plant Sciences and Proceedings-Experimental Biology. Proceedings-Experimental Biology was renamed Journal of Biosciences in 1979; and in 1991, Proceedings-Animal Sciences and Proceedings-Plant Sciences merged with it.