Evaluation of traits related to bread wheat (Triticum aestivum L.) root in drought tolerance applied at the beginning of vegetative and reproductive stages

Authors

  • Arman ESKANDARI SHAHRAKI Department of Agriculture and Plant Breeding, Guilan University, Rasht, Iran
  • Mohammad-Mehdi SOHANI
  • Sadollah HOOSHMAND
  • Ali AALAMI
  • Habibullah SAMIZADEH

DOI:

https://doi.org/10.14720/aas.2021.117.4.2166

Keywords:

deep root, drought tress, main components, shallow root, tolerance index

Abstract

Roots play an important role in wheat grain yield, especially under drought stress conditions. To investigate root characteristics under drought stress conditions in bread wheat, 90 lines F10 obtained from the crossing (‘Yecora Rojo’ × ‘Chinese Spring’) randomly with the parents of the population were examined. The study was conducted in the form of a split-plot design with a randomized complete block base in three conditions including: 1. no stress, 2. application of drought stress at the beginning of the vegetative stage, and 3. application of drought stress at the beginning of the reproductive stage. The results showed, interaction between genotype and condition of drought was significant for all root-related traits, except shallow root dry mass, at the level of 1 % probability. The response of root-related traits to different types of drought stress was very complex. The longest root length, decrease for 13.3 % was during stress at the beginning of the vegetative stage in comparison to non-stress conditions, while the same trait increased for 4.9 % during stress at the beginning of the reproductive stage, comparison to non-stress conditions. The results of principal component analysis under non-stress conditions showed that by considering the distribution of genotypes compared to the first two components, genotypes can be identified that have more yield with the proper root condition and vice versa.

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Published

24. 12. 2021

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Original Scientific Article

How to Cite

ESKANDARI SHAHRAKI, A., SOHANI, M.-M., HOOSHMAND, S., AALAMI, A., & SAMIZADEH, H. (2021). Evaluation of traits related to bread wheat (Triticum aestivum L.) root in drought tolerance applied at the beginning of vegetative and reproductive stages. Acta Agriculturae Slovenica, 117(4), 1-14. https://doi.org/10.14720/aas.2021.117.4.2166

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