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July 1, 2026PeerJOpen Access

Evaluation of cold resistance in pear ( Pyrus L.) germplasms: integrating physiological and biochemical responses with anatomical traits under low temperature stress

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Authors

HLHuan LiuJXJintao XuMJMinghui Ji

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Overview

Randomized trial evaluates cold resistance in pear germplasms, indicating a reliable evaluation framework.

Key Points

  • This research aims to assess cold resistance in pear germplasms through an integrated analysis of physiological, biochemical, and anatomical traits.
  • Evaluated 122 pear germplasms categorized by cold tolerance (high, medium, low) based on semi-lethal temperature (LT 50).
  • Measured physiological responses including relative electrolyte conductivity, malondialdehyde content, and biochemical indicators like proline and soluble sugars under low-temperature stress.
  • Conducted correlation and principal component analyses to link physiological indices with anatomical traits and LT 50 variation.
  • HR germplasms showed smaller increases in relative electrolyte conductivity (REC) and malondialdehyde (MDA) content compared to LR germplasms.
  • HR germplasms had higher accumulation of proline, soluble proteins, and soluble sugars, with indicators peaking at lower temperatures than LR germplasms.
  • Integrated assessment using membership function analysis produced rankings consistent with LT 50 classifications, confirming evaluation reliability.

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6a44afdc5cd2549c8bc44c0ahttps://doi.org/10.7717/peerj.21475
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