Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants
More first‐instar larvae of the rice leaffolder, Cnaphalocrocis medinalis (Guenée), were recovered from susceptible IR36 and Roxoro rice varieties than resistant TKM6 and Oryza perennis, 24 h after infestation. Within a rice plant, a higher proportion of larvae was recovered from young whorl leaf, f...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
1991
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/165904 |
| _version_ | 1855515036067299328 |
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| author | Ramachandran, R. Khan, Z.R. |
| author_browse | Khan, Z.R. Ramachandran, R. |
| author_facet | Ramachandran, R. Khan, Z.R. |
| author_sort | Ramachandran, R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | More first‐instar larvae of the rice leaffolder, Cnaphalocrocis medinalis (Guenée), were recovered from susceptible IR36 and Roxoro rice varieties than resistant TKM6 and Oryza perennis, 24 h after infestation. Within a rice plant, a higher proportion of larvae was recovered from young whorl leaf, followed by mature leaves and leafsheaths on all the four rice varieties tested. However, differences were observed between susceptible and resistant varieties in the distribution of larvae on these three plant parts. In laboratory choice tests, first‐instar larvae preferred to settle on the young leaves of IR36 and TKM6 when presented with their respective mature leaves. No such preference was observed in tests with Rexoro and O. perennis. Larval survival was similar on young and mature leaves of Rexoro. Young leaves of IR36 and TKM6 were more suitable for survival in comparison with their respective mature leaves while the reverse was true for O. perennis. Larval movement was slower on the mature leaves and larvae took longer to reach the whorl leaf of TKM6 than on IR36. The density of trichomes of the abaxial surface of TKM6 was higher than that of the other varieties tested. Adaptive significance of feeding in the leafwhorl to young larvae is discussed. |
| format | Journal Article |
| id | CGSpace165904 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1991 |
| publishDateRange | 1991 |
| publishDateSort | 1991 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1659042025-05-14T10:39:28Z Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants Ramachandran, R. Khan, Z.R. feeding site selection first instar larvae cnaphalocrocis medinalis More first‐instar larvae of the rice leaffolder, Cnaphalocrocis medinalis (Guenée), were recovered from susceptible IR36 and Roxoro rice varieties than resistant TKM6 and Oryza perennis, 24 h after infestation. Within a rice plant, a higher proportion of larvae was recovered from young whorl leaf, followed by mature leaves and leafsheaths on all the four rice varieties tested. However, differences were observed between susceptible and resistant varieties in the distribution of larvae on these three plant parts. In laboratory choice tests, first‐instar larvae preferred to settle on the young leaves of IR36 and TKM6 when presented with their respective mature leaves. No such preference was observed in tests with Rexoro and O. perennis. Larval survival was similar on young and mature leaves of Rexoro. Young leaves of IR36 and TKM6 were more suitable for survival in comparison with their respective mature leaves while the reverse was true for O. perennis. Larval movement was slower on the mature leaves and larvae took longer to reach the whorl leaf of TKM6 than on IR36. The density of trichomes of the abaxial surface of TKM6 was higher than that of the other varieties tested. Adaptive significance of feeding in the leafwhorl to young larvae is discussed. 1991-07 2024-12-19T12:55:37Z 2024-12-19T12:55:37Z Journal Article https://hdl.handle.net/10568/165904 en Wiley Ramachandran, R.; Khan, Z. R. 1991. Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants. Entomologia Exp Applicata, Volume 60 no. 1 p. 43-49 |
| spellingShingle | feeding site selection first instar larvae cnaphalocrocis medinalis Ramachandran, R. Khan, Z.R. Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title | Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title_full | Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title_fullStr | Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title_full_unstemmed | Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title_short | Feeding Site Selection of First-Instar Larvae of Cnaphalocrocis medinalis on Susceptible and Resistant Rice Plants |
| title_sort | feeding site selection of first instar larvae of cnaphalocrocis medinalis on susceptible and resistant rice plants |
| topic | feeding site selection first instar larvae cnaphalocrocis medinalis |
| url | https://hdl.handle.net/10568/165904 |
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