| Titre : |
Response of sorghum genotypes to drought in Zimbabwe |
| Type de document : |
texte imprimé |
| Auteurs : |
N. Mangombe, Auteur ; L.T. Gono, Auteur ; J.N. Mushonga, Auteur |
| Année de publication : |
1996 |
| Importance : |
p 99-111 |
| Langues : |
Anglais (eng) |
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ZIMBABWE SORGHO GENOTYPE |
| Résumé : |
This study determined the yield response of 20 sorghum genotypes to late-season drought at Chiredzi and Lucydale over two seasons, Chiredzi is on a clay loam soil in Natural Region V, whereas Lucydale is on a sandy loam soil in Region IV. The 1992/93 season had higher and more evenly distributed rainfall compared to the 1993/94 season, which experienced a late season drought. Genotypes were evaluated for grain yield, days to 50% flowering, plant height, exertion of panicle and 1000-seed mass.
At both Chiredzi and Lucydale, sorghum genotypes varied in yield depending on season. Under good rainfall at Chiredzi in 1992/93, NL 803, SV 1, NL 836-2 and NL 265 gave the highest yields. However, under late-season drought conditions in 1993/94, SV 1, NL 535, NL 699 and NL 692 gave the highest yields. At Lucydale, Chibonda, NL 265, NL 836-2 and SV 1 had the highest yields under adequate rainfall in 1992-93, but under late-season drought in 1993/94 season, SV1, SV2, NL 267 and NL 653 had the highest yields. Grain yield was positively correlated with plant height, exertion of panicle and 1000-seed mass but not days to 50% flowering. Our breeding effort, therefore should aim at developing cultivars that mature early for those areas in which late-season drought is common. |
| Numéro du document : |
A 10433/F00 132 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
SCIENCES ET PRODUCTION VEGETALES |
| Bull2 (Theme secondaire) : |
SYSTEMES ET MODES DE CULTURE |
Response of sorghum genotypes to drought in Zimbabwe [texte imprimé] / N. Mangombe, Auteur ; L.T. Gono, Auteur ; J.N. Mushonga, Auteur . - 1996 . - p 99-111. Langues : Anglais ( eng)
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ZIMBABWE SORGHO GENOTYPE |
| Résumé : |
This study determined the yield response of 20 sorghum genotypes to late-season drought at Chiredzi and Lucydale over two seasons, Chiredzi is on a clay loam soil in Natural Region V, whereas Lucydale is on a sandy loam soil in Region IV. The 1992/93 season had higher and more evenly distributed rainfall compared to the 1993/94 season, which experienced a late season drought. Genotypes were evaluated for grain yield, days to 50% flowering, plant height, exertion of panicle and 1000-seed mass.
At both Chiredzi and Lucydale, sorghum genotypes varied in yield depending on season. Under good rainfall at Chiredzi in 1992/93, NL 803, SV 1, NL 836-2 and NL 265 gave the highest yields. However, under late-season drought conditions in 1993/94, SV 1, NL 535, NL 699 and NL 692 gave the highest yields. At Lucydale, Chibonda, NL 265, NL 836-2 and SV 1 had the highest yields under adequate rainfall in 1992-93, but under late-season drought in 1993/94 season, SV1, SV2, NL 267 and NL 653 had the highest yields. Grain yield was positively correlated with plant height, exertion of panicle and 1000-seed mass but not days to 50% flowering. Our breeding effort, therefore should aim at developing cultivars that mature early for those areas in which late-season drought is common. |
| Numéro du document : |
A 10433/F00 132 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
SCIENCES ET PRODUCTION VEGETALES |
| Bull2 (Theme secondaire) : |
SYSTEMES ET MODES DE CULTURE |
|
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