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- Title
Evaluation of Cold Resistance and Semi-lethal Low Temperature (LT<sub>50</sub>) of Nine Pear Cultivars.
- Authors
Huan LIU; Lijuan GAO; Jintao XU; Minghui JI; Longfei LI; Baofeng HAO
- Abstract
[Objectives] To evaluate the cold resistance and semi-lethal temperature of pear cultivars, and provide a theoretical basis for the regional extension and breeding of cold-resistant pear cultivars. [Methods] Nine pear cultivars were used to study the changes in relative conductivity and cell injury rate of pear branches under low temperature stress, and the semi-lethal temperature (LT50) of pear branches was analyzed by fitting Logistic equation. [Results] The relative conductivity and cell injury rate of pear branches took on the trend of slow increase, rapid increase, and slow increase the decrease of treatment temperature. The LT50 of the nine pear cultivars were as follows: Nanguo pear -33.9 °C, Wanyu -32.3 °C, Red D'Anjou -31.8 °C, Jinfeng -31.3 °C, Wujiuxiang -29.2 °C, 20th Century Pear -29.1 °C, Hanxiang -35.1 °C,, Yuluxiang -27.9 °C and Korla Fragrant Pear -29.2 °C. [Conclusions] The semi-lethal temperature could reflect the cold resistance of pear trees, and Wanxiang had better cold resistance. The evaluation of cold resistance and semi-lethal temperature of pear cultivars can provide theoretical basis for regional extension and breeding of cold-resistant pear cultivars.
- Publication
Asian Agricultural Research, 2024, Vol 16, Issue 6, p45
- ISSN
1943-9903
- Publication type
Article
- DOI
10.19601/j.cnki.issn1943-9903.2024.06.011