Low leaf sodium content improves the grain yield and physiological performance of wheat genotypes in saline-sodic soil

Authors

  • Muhammad Sohail Saddiq Department of Agronomy, Ghazi University, Dera Ghazi Khan 32200, Pakistan https://orcid.org/0000-0003-1684-2168
  • Irfan Afzal Department of Agronomy, University of Agriculture Faisalabad 38040, Pakistan
  • Shahid Iqbal Department of Agronomy, Muhammad Nawaz Shareef, University of Agriculture Multan 66000, Pakistan
  • Muhammad Bilal Hafeez Department of Agronomy, University of Agriculture Faisalabad 38040, Pakistan https://orcid.org/0000-0001-6719-6667
  • Ali Raza Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China. https://orcid.org/0000-0002-5120-2791

Abstract

Salt stress is a major production constraint in wheat. The maintenance of a low Na+ accumulation in the leaves may improve the tissue tolerance against salt stress. A field experiment was conducted to discriminate twenty wheat genotypes, based on leaf Na+ accumulation as a criterion for salt tolerance, and evaluate the effect of sodium accumulation on the biomass production, physiological and yield traits of wheat genotypes grown in a saline-sodic environment. The Na+ concentration was determined in young fully expanded leaves at the vegetative growth stage. The genotypes were categorized into two contrasting groups (with low and high Na+ content), in a randomized complete block design, with three replications. The low Na+ genotypes (V-03094, V-02156, TURACO, V0005 and PVN) showed much longer chlorophyll retention, leaf K+ content, proline and phenolic contents than the high Na+ genotypes. The salt effects on yield components were also less in the wheat genotypes with low leaf Na+ content than the high Na+ genotypes. The greater grain yield of low Na+ accumulating genotypes was due to the enhanced grain number and weight in their tillers, which were strongly associated with the higher Na+ efflux from the leaves. The low sodium accumulator genotypes improved the seedling emergence (%) and grain yield in saline-sodic soil.

KEYWORDS: Triticum aestivum L., salt stress, salt tolerance.

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Published

2021-07-15

How to Cite

SADDIQ, M. S. .; AFZAL, . I.; IQBAL, S.; HAFEEZ, M. B. .; RAZA, A. Low leaf sodium content improves the grain yield and physiological performance of wheat genotypes in saline-sodic soil. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 51, p. e67663, 2021. Disponível em: https://revistas.ufg.br/pat/article/view/67663. Acesso em: 27 sep. 2024.

Issue

Vol. 51 (2021)

Section

Research Article

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