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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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Science Press
2025-01-01
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| Series: | Xibei zhiwu xuebao |
| Subjects: | |
| Online Access: | http://xbzwxb.alljournal.net/xbzwxb/article/abstract/20240393?st=article_issue |
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| Summary: | [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. |
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| ISSN: | 1000-4025 |