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Cereal Research Communications

, Volume 46, Issue 3, pp 436–447 | Cite as

Roles of Seed Components in the Growth of Barley Seedlings under Salt Stress

  • W. Xue
  • A. Gianinetti
  • Y. Jiang
  • Z. Zhan
  • L. Kuang
  • G. Zhao
  • J. Yan
  • J. ChengEmail author
Article

Abstract

The cereal endosperm provides nutrients for seedling growth. The effects of seed components in seedling establishments under salt stress are, however, not yet fully explored. In this study, 60 barley recombinant inbred lines derived from Lewis × Karl cross were grown in four different environments, and the seed contents of starch, total soluble protein, phytate, total phenolics, total flavonoids and total inorganic phosphorus were determined in the harvested grains. Seeds of each line from the four environments were also assayed for seedling growth under saline treatments from 0 to 400 mM NaCl. Root and shoot lengths after 7 days decreased with increasing salt concentration. Correlations between seed components and either root or shoot length were established across the four seed sources. ANOVA showed a significant environment/source effect for both seed components and seedling growth, although the latter was less affected by the seed-production environment. Modeling seedling length across multiple salinities for each seed source showed that the environment with the most saline-tolerant root-growth curve was that associated the highest seed phosphorus content. Correlations between seed components and seedling growth traits highlighted phytate and total inorganic phosphorus as key components for seedling growth under moderate salinities. Seed phytate contents benefited seedling growth, even at high salinities, suggesting an additional role for this seed component under stressful growth conditions, possibly linked to its potential function as an osmolyte source.

Keywords

seed component salt tolerance seedling multiple seed source phytate 

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Copyright information

© Akadémiai Kiadó, Budapest 2018

Authors and Affiliations

  • W. Xue
    • 1
  • A. Gianinetti
    • 2
  • Y. Jiang
    • 3
  • Z. Zhan
    • 3
  • L. Kuang
    • 3
  • G. Zhao
    • 4
  • J. Yan
    • 4
  • J. Cheng
    • 3
    Email author
  1. 1.College of Life SciencesGuizhou UniversityGuizhouChina
  2. 2.Consiglio per la ricerca in agricoltura e l’analisi dell’economia agrariaResearch Centre for Genomics and BioinformaticsFiorenzuola d’ArdaItaly
  3. 3.College of AgricultureGuizhou UniversityGuizhouChina
  4. 4.School of Pharmacy and BioengineeringChengdu UniversitySichuanChina

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