Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits
[Objective] The study aims to examine the correlation between phytophthora resistance of pepper and plant agronomic traits and to select and breed phytophthora resistance varieties of pepper. [Methods] The irrigation method was employed to conduct a potted experiment on 45 different inbred lines...
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| Format: | Article |
| Language: | zho |
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Science Press
2025-01-01
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| Series: | Xibei zhiwu xuebao |
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| Online Access: | http://xbzwxb.alljournal.net/xbzwxb/article/abstract/20240393?st=article_issue |
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| author | YANG Kaiwei ZHOU Yingying DU Jiao JIANG Pan LUO Gongwen OU Lijun |
| author_facet | YANG Kaiwei ZHOU Yingying DU Jiao JIANG Pan LUO Gongwen OU Lijun |
| author_sort | YANG Kaiwei |
| collection | DOAJ |
| description | [Objective] The study aims to examine the correlation between phytophthora resistance of pepper
and plant agronomic traits and to select and breed phytophthora resistance varieties of pepper.
[Methods] The irrigation method was employed to conduct a potted experiment on 45 different inbred lines
of pepper. Agronomic traits as well as physiological and biochemical parameters were assessed. [Results]
The results revealed significant variations in disease resistance among the inbred lines, and the incidence of
eight inbred lines, including ‘RT19-248’, ‘RC17-555’, ‘YJ-24’, ‘NJ-07’, ‘702’, ‘298a’, ‘CF19’, and
‘CF20’, was less than 20%. Conversely, seven inbred lines, including ‘WangH242-1’, ‘XJ-19’, ‘NJ08’,
‘CB3’, ‘CC4’, ‘CC7’, and ‘CF9’, exhibited an incidence rate exceeding 80%. The plant height,
aboveground fresh weight, and nitrogen content exhibited significant differences after 20 days of inoculation
compared to the control group. Correlation analysis revealed a negative correlation between disease incidence
and plant height and fresh weight, while a positive correlation was observed with nitrogen content.
[Conclusions] The results demonstrate that eight inbred lines (‘RT19-248’, ‘RC17-555’, ‘YJ-24’, ‘NJ-
07’, ‘702’, ‘298a’, ‘CF19’, and ‘CF20’) possess the potential to serve as parental sources for developing
highly blight-resistant pepper varieties. Strong stalks, vigorous growth, and low nitrogen tolerance
are the preliminary identification criteria of pepper varieties with high blight-resistance. |
| format | Article |
| id | doaj-art-cb219666c5d049b4bedd8b4269bfa4f4 |
| institution | Kabale University |
| issn | 1000-4025 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Science Press |
| record_format | Article |
| series | Xibei zhiwu xuebao |
| spelling | doaj-art-cb219666c5d049b4bedd8b4269bfa4f42025-02-11T14:08:32ZzhoScience PressXibei zhiwu xuebao1000-40252025-01-014510037004410.7606/j.issn.1000-4025.20240393Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traitsYANG Kaiwei0ZHOU Yingying1DU Jiao2JIANG Pan3LUO Gongwen4OU Lijun5College of Horticulture, Hunan Agricultural University, Changsha 410128, ChinaCollege of Horticulture, Hunan Agricultural University, Changsha 410128, ChinaCollege of Resources, Hunan Agricultural University, Changsha 410128, ChinaCollege of Resources, Hunan Agricultural University, Changsha 410128, ChinaCollege of Resources, Hunan Agricultural University, Changsha 410128, ChinaCollege of Horticulture, Hunan Agricultural University, Changsha 410128, China; Key Labortory for Vegetable Biology of Hunan Province, Hunan Agricultural University, Changsha 410128, China[Objective] The study aims to examine the correlation between phytophthora resistance of pepper and plant agronomic traits and to select and breed phytophthora resistance varieties of pepper. [Methods] The irrigation method was employed to conduct a potted experiment on 45 different inbred lines of pepper. Agronomic traits as well as physiological and biochemical parameters were assessed. [Results] The results revealed significant variations in disease resistance among the inbred lines, and the incidence of eight inbred lines, including ‘RT19-248’, ‘RC17-555’, ‘YJ-24’, ‘NJ-07’, ‘702’, ‘298a’, ‘CF19’, and ‘CF20’, was less than 20%. Conversely, seven inbred lines, including ‘WangH242-1’, ‘XJ-19’, ‘NJ08’, ‘CB3’, ‘CC4’, ‘CC7’, and ‘CF9’, exhibited an incidence rate exceeding 80%. The plant height, aboveground fresh weight, and nitrogen content exhibited significant differences after 20 days of inoculation compared to the control group. Correlation analysis revealed a negative correlation between disease incidence and plant height and fresh weight, while a positive correlation was observed with nitrogen content. [Conclusions] The results demonstrate that eight inbred lines (‘RT19-248’, ‘RC17-555’, ‘YJ-24’, ‘NJ- 07’, ‘702’, ‘298a’, ‘CF19’, and ‘CF20’) possess the potential to serve as parental sources for developing highly blight-resistant pepper varieties. Strong stalks, vigorous growth, and low nitrogen tolerance are the preliminary identification criteria of pepper varieties with high blight-resistance.http://xbzwxb.alljournal.net/xbzwxb/article/abstract/20240393?st=article_issuecapsicum annuumepidemic diseasevariety selectionplant growth characteristics |
| spellingShingle | YANG Kaiwei ZHOU Yingying DU Jiao JIANG Pan LUO Gongwen OU Lijun Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits Xibei zhiwu xuebao capsicum annuum epidemic disease variety selection plant growth characteristics |
| title | Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| title_full | Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| title_fullStr | Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| title_full_unstemmed | Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| title_short | Identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| title_sort | identification of phytophthora blight resistance of different pepper inbred lines and correlation analysis of plant functional traits |
| topic | capsicum annuum epidemic disease variety selection plant growth characteristics |
| url | http://xbzwxb.alljournal.net/xbzwxb/article/abstract/20240393?st=article_issue |
| work_keys_str_mv | AT yangkaiwei identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits AT zhouyingying identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits AT dujiao identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits AT jiangpan identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits AT luogongwen identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits AT oulijun identificationofphytophthorablightresistanceofdifferentpepperinbredlinesandcorrelationanalysisofplantfunctionaltraits |