The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp
Resistance to insects in cow peas was studied in a diallel cross and in a test cross. Number of pods and seed yield under unsprayed conditions, expressed as a percentage of their values under sprayed conditions, were confirmed as reliable characters for the assessment of resistance and as suitable f...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
1984
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44185 |
| _version_ | 1855523903011553280 |
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| author | Woolley, Jonathan N. Evans, AM |
| author_browse | Evans, AM Woolley, Jonathan N. |
| author_facet | Woolley, Jonathan N. Evans, AM |
| author_sort | Woolley, Jonathan N. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Resistance to insects in cow peas was studied in a diallel cross and in a test cross. Number of pods and seed yield under unsprayed conditions, expressed as a percentage of their values under sprayed conditions, were confirmed as reliable characters for the assessment of resistance and as suitable for diallel analysis. Non-allelic interaction was not detected for these ratios despite its presence in yields. Resistance to flower damage by Maruca and resistance to all damage by post-flowering pests were both highly heritable and were controlled polygenically by alleles showing partial dominance.
The test cross was not as informative as the diallel cross in the analysis of the genetic control of resistance in a group of moderately resistant lines, but was useful in selecting the best of these for future crosses. The results from both schemes suggested that resistance should be accumulated by intercrossing resistant lines before attempting to transfer it to agronomically-preferred susceptible lines. |
| format | Journal Article |
| id | CGSpace44185 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1984 |
| publishDateRange | 1984 |
| publishDateSort | 1984 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace441852024-11-15T08:52:28Z The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp Woolley, Jonathan N. Evans, AM feed crops vigna unguiculata maruca pest resistance plant breeding genetic variation heritability maruca lepidoptera resistencia a las plagas fitomejoramiento variación genética heredabilidad Resistance to insects in cow peas was studied in a diallel cross and in a test cross. Number of pods and seed yield under unsprayed conditions, expressed as a percentage of their values under sprayed conditions, were confirmed as reliable characters for the assessment of resistance and as suitable for diallel analysis. Non-allelic interaction was not detected for these ratios despite its presence in yields. Resistance to flower damage by Maruca and resistance to all damage by post-flowering pests were both highly heritable and were controlled polygenically by alleles showing partial dominance. The test cross was not as informative as the diallel cross in the analysis of the genetic control of resistance in a group of moderately resistant lines, but was useful in selecting the best of these for future crosses. The results from both schemes suggested that resistance should be accumulated by intercrossing resistant lines before attempting to transfer it to agronomically-preferred susceptible lines. 1984-04 2014-10-02T08:33:23Z 2014-10-02T08:33:23Z Journal Article https://hdl.handle.net/10568/44185 en Limited Access Cambridge University Press |
| spellingShingle | feed crops vigna unguiculata maruca pest resistance plant breeding genetic variation heritability maruca lepidoptera resistencia a las plagas fitomejoramiento variación genética heredabilidad Woolley, Jonathan N. Evans, AM The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title | The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title_full | The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title_fullStr | The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title_full_unstemmed | The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title_short | The use of two mating systems in breeding for resistance to Maruca testulalis Gey. in cowpea Vigna unguiculata (L.) Walp |
| title_sort | use of two mating systems in breeding for resistance to maruca testulalis gey in cowpea vigna unguiculata l walp |
| topic | feed crops vigna unguiculata maruca pest resistance plant breeding genetic variation heritability maruca lepidoptera resistencia a las plagas fitomejoramiento variación genética heredabilidad |
| url | https://hdl.handle.net/10568/44185 |
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