| Titre : |
Screening sorghum cultivars for resistance to witchweed (striga asiatica) in Zimbabwe |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Mabasa, Auteur |
| Editeur : |
ICRISAT |
| Année de publication : |
1996 |
| Importance : |
p 201-209 |
| Langues : |
Anglais (eng) |
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ZIMBABWE SORGHO STRIGA ASIATICA |
| Résumé : |
Pot and field experiments were conducted to evaluate the resistance of 17 sorghum cultivars to the parasitic weed striga asiatica between 1991 and 1994. Striga asiatica emerged and flowered within 64 to 105 days from sorghum sowing, the sorghum cultivars SAR 29, 33, 35, and SAR 16 supported low Striga asiatica infestation counts, compared with the recommended cultivars DC 75, SV1 and SV2. Although the SAR cultivars showed considerable resistance to S. asiatica, their grain yields were very low. The cultivars DC 75, SV1 , SV2 and MMSH 413 which were highly infested with S. asiatica, outyielded these resistant cultivars and can probably be described as tolerant of S. asiatica. There is therefore a need to improve the grain yield potential of the SAR cultivars through breeding. The use of resistant sorghum cultivars by farmers is the most feasible control method and the objective of the study is to screen sorghum cultivars for this resistance character. |
| Numéro du document : |
A10433/F00 132 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
SCIENCES ET PRODUCTION VEGETALES |
| Bull2 (Theme secondaire) : |
SYSTEMES ET MODES DE CULTURE |
Screening sorghum cultivars for resistance to witchweed (striga asiatica) in Zimbabwe [texte imprimé] / S. Mabasa, Auteur . - ICRISAT, 1996 . - p 201-209. Langues : Anglais ( eng)
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ZIMBABWE SORGHO STRIGA ASIATICA |
| Résumé : |
Pot and field experiments were conducted to evaluate the resistance of 17 sorghum cultivars to the parasitic weed striga asiatica between 1991 and 1994. Striga asiatica emerged and flowered within 64 to 105 days from sorghum sowing, the sorghum cultivars SAR 29, 33, 35, and SAR 16 supported low Striga asiatica infestation counts, compared with the recommended cultivars DC 75, SV1 and SV2. Although the SAR cultivars showed considerable resistance to S. asiatica, their grain yields were very low. The cultivars DC 75, SV1 , SV2 and MMSH 413 which were highly infested with S. asiatica, outyielded these resistant cultivars and can probably be described as tolerant of S. asiatica. There is therefore a need to improve the grain yield potential of the SAR cultivars through breeding. The use of resistant sorghum cultivars by farmers is the most feasible control method and the objective of the study is to screen sorghum cultivars for this resistance character. |
| Numéro du document : |
A10433/F00 132 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
SCIENCES ET PRODUCTION VEGETALES |
| Bull2 (Theme secondaire) : |
SYSTEMES ET MODES DE CULTURE |
|
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