Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress
The study aimed to evaluate the cold tolerance of various peach cultivars under diverse low-temperature conditions (−5, −10, −15, −20, −25, −30, and −35 °C). A comprehensive assessment of their responses to cold was performed by integrating LT50 values with membership functions and evaluating local...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/15/1/182 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832589395998277632 |
|---|---|
| author | Ruxuan Niu Juanjuan Huang Yiwen Zhang Falin Wang Chenbing Wang |
| author_facet | Ruxuan Niu Juanjuan Huang Yiwen Zhang Falin Wang Chenbing Wang |
| author_sort | Ruxuan Niu |
| collection | DOAJ |
| description | The study aimed to evaluate the cold tolerance of various peach cultivars under diverse low-temperature conditions (−5, −10, −15, −20, −25, −30, and −35 °C). A comprehensive assessment of their responses to cold was performed by integrating LT50 values with membership functions and evaluating local adaptability among the selected peach cultivars. The findings revealed that as temperatures dropped, electrical conductivity (REC), malondialdehyde (MDA), and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) levels initially rose, then fell, and subsequently increased once more. Soluble sugar (SS) and soluble protein (SP) concentrations peaked at −25 °C and showed a significant negative correlation with semi-lethal temperature (LT50). The expression of free proline varied among different samples. Combining physiological analyses with field adaptation correlation assessments, it was found that ‘Ziyan Ruiyang’ exhibited a relatively low LT50 value of −29.67 °C and a membership function degree of 0.76, suggesting robust field adaptation abilities. At the same time, ‘Ganlu Shumi’ demonstrated stable trends in H<sub>2</sub>O<sub>2</sub> and MDA levels, maintaining them at relatively low concentrations; it also had the lowest LT50 value, the highest membership function score, and the highest survival rate. Consequently, this cultivar could be a valuable resource for enhancing cold resistance under low-temperature stress. In summary, by correlating LT50 values with membership functions and observing local adaptability in these peach cultivars, we have established reliable data that can serve as a basis for identifying potential cross-breeding parents to develop new cold-resistant varieties. |
| format | Article |
| id | doaj-art-49aa51ab4e074745a3ecf2a617dd025d |
| institution | Kabale University |
| issn | 2073-4395 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj-art-49aa51ab4e074745a3ecf2a617dd025d2025-01-24T13:17:04ZengMDPI AGAgronomy2073-43952025-01-0115118210.3390/agronomy15010182Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature StressRuxuan Niu0Juanjuan Huang1Yiwen Zhang2Falin Wang3Chenbing Wang4Institute of Fruit and Floriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, ChinaInstitute of Fruit and Floriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, ChinaInstitute of Fruit and Floriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, ChinaInstitute of Fruit and Floriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, ChinaInstitute of Fruit and Floriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, ChinaThe study aimed to evaluate the cold tolerance of various peach cultivars under diverse low-temperature conditions (−5, −10, −15, −20, −25, −30, and −35 °C). A comprehensive assessment of their responses to cold was performed by integrating LT50 values with membership functions and evaluating local adaptability among the selected peach cultivars. The findings revealed that as temperatures dropped, electrical conductivity (REC), malondialdehyde (MDA), and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) levels initially rose, then fell, and subsequently increased once more. Soluble sugar (SS) and soluble protein (SP) concentrations peaked at −25 °C and showed a significant negative correlation with semi-lethal temperature (LT50). The expression of free proline varied among different samples. Combining physiological analyses with field adaptation correlation assessments, it was found that ‘Ziyan Ruiyang’ exhibited a relatively low LT50 value of −29.67 °C and a membership function degree of 0.76, suggesting robust field adaptation abilities. At the same time, ‘Ganlu Shumi’ demonstrated stable trends in H<sub>2</sub>O<sub>2</sub> and MDA levels, maintaining them at relatively low concentrations; it also had the lowest LT50 value, the highest membership function score, and the highest survival rate. Consequently, this cultivar could be a valuable resource for enhancing cold resistance under low-temperature stress. In summary, by correlating LT50 values with membership functions and observing local adaptability in these peach cultivars, we have established reliable data that can serve as a basis for identifying potential cross-breeding parents to develop new cold-resistant varieties.https://www.mdpi.com/2073-4395/15/1/182peachmembership functionfield identificationcold resistance |
| spellingShingle | Ruxuan Niu Juanjuan Huang Yiwen Zhang Falin Wang Chenbing Wang Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress Agronomy peach membership function field identification cold resistance |
| title | Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress |
| title_full | Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress |
| title_fullStr | Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress |
| title_full_unstemmed | Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress |
| title_short | Physiological Response and Comprehensive Evaluation of Cold-Resistant Peach Varieties to Low-Temperature Stress |
| title_sort | physiological response and comprehensive evaluation of cold resistant peach varieties to low temperature stress |
| topic | peach membership function field identification cold resistance |
| url | https://www.mdpi.com/2073-4395/15/1/182 |
| work_keys_str_mv | AT ruxuanniu physiologicalresponseandcomprehensiveevaluationofcoldresistantpeachvarietiestolowtemperaturestress AT juanjuanhuang physiologicalresponseandcomprehensiveevaluationofcoldresistantpeachvarietiestolowtemperaturestress AT yiwenzhang physiologicalresponseandcomprehensiveevaluationofcoldresistantpeachvarietiestolowtemperaturestress AT falinwang physiologicalresponseandcomprehensiveevaluationofcoldresistantpeachvarietiestolowtemperaturestress AT chenbingwang physiologicalresponseandcomprehensiveevaluationofcoldresistantpeachvarietiestolowtemperaturestress |