Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant
Salt stress presents a major environmental constraint to global agricultural productivity and crop yield stability. Eggplant (<i>Solanum melongena</i> L.) is one of the most extensively cultivated Solanaceae crops worldwide, and the characterization of its germplasm for salt tolerance is...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
|
| Series: | Horticulturae |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-7524/11/6/697 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849471838621532160 |
|---|---|
| author | Yu Fang Zhiguo Wang Yingnan Du Shuaitao Di Zhenwei Gao Xueping Chen Weiwei Zhang Lijun Song Shuangxia Luo Qiang Li |
| author_facet | Yu Fang Zhiguo Wang Yingnan Du Shuaitao Di Zhenwei Gao Xueping Chen Weiwei Zhang Lijun Song Shuangxia Luo Qiang Li |
| author_sort | Yu Fang |
| collection | DOAJ |
| description | Salt stress presents a major environmental constraint to global agricultural productivity and crop yield stability. Eggplant (<i>Solanum melongena</i> L.) is one of the most extensively cultivated Solanaceae crops worldwide, and the characterization of its germplasm for salt tolerance is essential to develop breeding programs to target its abiotic stress resilience. In this study, 200 mmol/L NaCl was identified as the initial screening concentration for the discrimination of salt tolerance levels in eggplant seedlings. Salt tolerance indices derived from 13 descriptors, including the plant height, stem diameter, and leaf number, were used to evaluate 165 germplasm resources (108 inbred lines and 57 commercial cultivars). These 165 germplasms were grouped into five groups, and six highly tolerant and eight highly sensitive germplasms were identified. Importantly, a stepwise multiple linear regression model incorporating the root surface area, leaf number, leaf water content, malondialdehyde content, and stem water content achieved 90.02% predictive accuracy, establishing a high-throughput screening protocol for germplasm selection. This systematic approach provides methodological advancements for precision breeding and identifies key physiological and morphological markers for salt tolerance improvement in eggplant. |
| format | Article |
| id | doaj-art-d09c6ee1c96240889f0212c2e33749d8 |
| institution | Kabale University |
| issn | 2311-7524 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj-art-d09c6ee1c96240889f0212c2e33749d82025-08-20T03:24:40ZengMDPI AGHorticulturae2311-75242025-06-0111669710.3390/horticulturae11060697Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in EggplantYu Fang0Zhiguo Wang1Yingnan Du2Shuaitao Di3Zhenwei Gao4Xueping Chen5Weiwei Zhang6Lijun Song7Shuangxia Luo8Qiang Li9Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaKey Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaSalt stress presents a major environmental constraint to global agricultural productivity and crop yield stability. Eggplant (<i>Solanum melongena</i> L.) is one of the most extensively cultivated Solanaceae crops worldwide, and the characterization of its germplasm for salt tolerance is essential to develop breeding programs to target its abiotic stress resilience. In this study, 200 mmol/L NaCl was identified as the initial screening concentration for the discrimination of salt tolerance levels in eggplant seedlings. Salt tolerance indices derived from 13 descriptors, including the plant height, stem diameter, and leaf number, were used to evaluate 165 germplasm resources (108 inbred lines and 57 commercial cultivars). These 165 germplasms were grouped into five groups, and six highly tolerant and eight highly sensitive germplasms were identified. Importantly, a stepwise multiple linear regression model incorporating the root surface area, leaf number, leaf water content, malondialdehyde content, and stem water content achieved 90.02% predictive accuracy, establishing a high-throughput screening protocol for germplasm selection. This systematic approach provides methodological advancements for precision breeding and identifies key physiological and morphological markers for salt tolerance improvement in eggplant.https://www.mdpi.com/2311-7524/11/6/697eggplantsalt tolerancecomprehensive evaluationlinear regression model |
| spellingShingle | Yu Fang Zhiguo Wang Yingnan Du Shuaitao Di Zhenwei Gao Xueping Chen Weiwei Zhang Lijun Song Shuangxia Luo Qiang Li Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant Horticulturae eggplant salt tolerance comprehensive evaluation linear regression model |
| title | Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant |
| title_full | Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant |
| title_fullStr | Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant |
| title_full_unstemmed | Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant |
| title_short | Comprehensive Evaluation and Screening for Salt Tolerance Germplasms at Seedling Stage in Eggplant |
| title_sort | comprehensive evaluation and screening for salt tolerance germplasms at seedling stage in eggplant |
| topic | eggplant salt tolerance comprehensive evaluation linear regression model |
| url | https://www.mdpi.com/2311-7524/11/6/697 |
| work_keys_str_mv | AT yufang comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT zhiguowang comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT yingnandu comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT shuaitaodi comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT zhenweigao comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT xuepingchen comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT weiweizhang comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT lijunsong comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT shuangxialuo comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant AT qiangli comprehensiveevaluationandscreeningforsalttolerancegermplasmsatseedlingstageineggplant |