Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe
Verticillium wilt disease causes significant losses to cotton yield and varietal development for resistance is critical in combating this threat. A study was carried out to determine the underlying genetic pattern controlling disease resistance and identify suitable parental lines to use in varietal...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | research article |
| Language: | English |
| Published: |
Academic Journals
2023
|
| Subjects: | |
| Online Access: | https://cris.library.msu.ac.zw//handle/11408/5628 https://doi.org/10.5897/AJAR2014.9191 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1779905332964753408 |
|---|---|
| author | Manjeru P Chapepa B Ncube B. Mudada N Mubvekeri W |
| author2 | Faculty of Agriculture and Natural Resources, Midlands State University, P. Bag 9055, Gweru, Zimbabwe. |
| author_facet | Faculty of Agriculture and Natural Resources, Midlands State University, P. Bag 9055, Gweru, Zimbabwe. Manjeru P Chapepa B Ncube B. Mudada N Mubvekeri W |
| author_sort | Manjeru P |
| collection | DSpace |
| description | Verticillium wilt disease causes significant losses to cotton yield and varietal development for resistance is critical in combating this threat. A study was carried out to determine the underlying genetic pattern controlling disease resistance and identify suitable parental lines to use in varietal tolerance development. Five cotton varieties were crossed in a half diallel mating system to produce ten crosses and five selfed parental lines which were screened against Verticillium wilt by artificial inoculation. There were significant variations on the severity scores, vascular brown index scores, morphological and agronomical traits under Verticillium wilt pressure. The Verticillium wilt severity scores ranged from 1.22 to 3.07 and Vascular Brown Index scores from 0.78 to 2.77. The mean squares of general combining ability (GCA) for the various characteristics of the parents were significant and also for the specific combining ability (SCA) of the vascular brown index score which was 0.27 was also significant. Three parental lines were identified as breeding material with good GCA, morphological and agronomical performance and these were CRI-MS-1, SZ9314 and BC853. This study implies that varietal tolerance can be developed by incorporating genotypes with resistance genes in breeding programmes. Future work should focus on developing resistant varieties suitable for production in Verticillium wilt prone areas. |
| format | research article |
| id | ir-11408-5628 |
| institution | My University |
| language | English |
| publishDate | 2023 |
| publisher | Academic Journals |
| record_format | dspace |
| spelling | ir-11408-56282023-05-08T15:21:25Z Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe Manjeru P Chapepa B Ncube B. Mudada N Mubvekeri W Faculty of Agriculture and Natural Resources, Midlands State University, P. Bag 9055, Gweru, Zimbabwe. Cotton Research Institute, Department of Research and Specialist Services, P. Bag 765, Kadoma, Zimbabwe. Faculty of Agriculture and Natural Resources, Midlands State University, P. Bag 9055, Gweru, Zimbabwe. Plant Quarantine Services Institute, Department of Research and Specialist Services, Mazowe, Zimbabwe Cotton Research Institute, Department of Research and Specialist Services, P. Bag 765, Kadoma, Zimbabwe Verticillium wilt General combining ability Specific combing ability Cotton Verticillium wilt disease causes significant losses to cotton yield and varietal development for resistance is critical in combating this threat. A study was carried out to determine the underlying genetic pattern controlling disease resistance and identify suitable parental lines to use in varietal tolerance development. Five cotton varieties were crossed in a half diallel mating system to produce ten crosses and five selfed parental lines which were screened against Verticillium wilt by artificial inoculation. There were significant variations on the severity scores, vascular brown index scores, morphological and agronomical traits under Verticillium wilt pressure. The Verticillium wilt severity scores ranged from 1.22 to 3.07 and Vascular Brown Index scores from 0.78 to 2.77. The mean squares of general combining ability (GCA) for the various characteristics of the parents were significant and also for the specific combining ability (SCA) of the vascular brown index score which was 0.27 was also significant. Three parental lines were identified as breeding material with good GCA, morphological and agronomical performance and these were CRI-MS-1, SZ9314 and BC853. This study implies that varietal tolerance can be developed by incorporating genotypes with resistance genes in breeding programmes. Future work should focus on developing resistant varieties suitable for production in Verticillium wilt prone areas. 10 2 39 48 2023-05-08T15:21:25Z 2023-05-08T15:21:25Z 2015-01-08 research article https://cris.library.msu.ac.zw//handle/11408/5628 https://doi.org/10.5897/AJAR2014.9191 en African Journal of Agricultural Research ISSN 1991-637X open Academic Journals |
| spellingShingle | Verticillium wilt General combining ability Specific combing ability Cotton Manjeru P Chapepa B Ncube B. Mudada N Mubvekeri W Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title | Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title_full | Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title_fullStr | Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title_full_unstemmed | Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title_short | Diallel analysis on variation of Verticillium wilt resistance in upland cotton grown in Zimbabwe |
| title_sort | diallel analysis on variation of verticillium wilt resistance in upland cotton grown in zimbabwe |
| topic | Verticillium wilt General combining ability Specific combing ability Cotton |
| url | https://cris.library.msu.ac.zw//handle/11408/5628 https://doi.org/10.5897/AJAR2014.9191 |
| work_keys_str_mv | AT manjerup diallelanalysisonvariationofverticilliumwiltresistanceinuplandcottongrowninzimbabwe AT chapepab diallelanalysisonvariationofverticilliumwiltresistanceinuplandcottongrowninzimbabwe AT ncubeb diallelanalysisonvariationofverticilliumwiltresistanceinuplandcottongrowninzimbabwe AT mudadan diallelanalysisonvariationofverticilliumwiltresistanceinuplandcottongrowninzimbabwe AT mubvekeriw diallelanalysisonvariationofverticilliumwiltresistanceinuplandcottongrowninzimbabwe |