Genetic analysis of resistance to Alternaria leaf petiole and stem blight of sweetpotato in Uganda
| Autor: | Paul Shanahan, Gorrettie N. Ssemakula, Godfrey Sseruwu, Rob Melis |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Germplasm Veterinary medicine biology business.industry Plant Science Horticulture Alternaria biology.organism_classification 01 natural sciences Genetic analysis Alternaria alternata Petiole (botany) Biotechnology 010104 statistics & probability Genotype otorhinolaryngologic diseases Genetics Trait Blight 0101 mathematics business Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Euphytica. 210:393-404 |
| ISSN: | 1573-5060 0014-2336 |
| DOI: | 10.1007/s10681-016-1703-5 |
| Popis: | Alternaria blight (Alternaria spp.) is an important sweetpotato disease in Uganda causing yield losses of over 50 % in susceptible genotypes. In Uganda, Alternaria bataticola and Alternaria alternata are the major species with A. bataticola the more aggressive of the two. The most effective control measure for this disease is the use of resistant genotypes. This study was conducted to determine the inheritance of resistance to Alternaria blight and the general and specific combining abilities of the available germplasm. Sixteen parental clones varying in reaction to Alternaria blight were crossed using the North Carolina II mating scheme. Due to incompatibility of some parents, two sets of compatible parents were formed. Differences among the families for Alternaria blight severity were significant while general combining ability (GCA) and specific combining ability (SCA) mean squares were highly significant (P |
| Databáze: | OpenAIRE |
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