| Titre : |
Mechanisms and inheritance of resistance to panicle-feeding insects in sorghum bicolor |
| Type de document : |
texte imprimé |
| Auteurs : |
H.C. Sharma, Auteur ; J.W. Stenhouse, Auteur ; K.F. Nwanze, Auteur |
| Année de publication : |
1995 |
| Importance : |
p 171-182 |
| Langues : |
Anglais (eng) |
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
MECANISME DE LA RESISTANCE INSECTE PANICULAIRE SORGHO RESISTANCE AUX RAVAGEURS |
| Résumé : |
Sorghum midge, head bugs and eurystylus immaculatus and head caterpillars are the major pests of sorghum worldwide. Nonpreference and antibiosis are the major components of resistance to C. sorghicola. Evidence for compensation in grain mass following midge damage is not conclusive. Short, tight glumes make oviposition difficult and this is the most important factor associated with resistance to midge. Faster grain development and high tannin content of grain are also associated with resistance. Resistance to midge is governed by additive and nonadditive gene action but largely by the former. Resistance to head bugs is largely comprised of nonpreference for feeding and oviposition, antibiosis and tolerance of which nonpreference is the major component. Longer duration of glume covering of the grain, long glumes, panicle copactness, quicker grain hardening and possibly high tannin content are associated with resistance to bugs. There is no information on the genetics of resistance to head bugs. Loose-panicled genotypes are resistant to head caterpillars and resistance is largely governed by additive gene action. |
| Numéro du document : |
A 96000/H00 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
PROTECTION DES VEGETAUX |
| Bull2 (Theme secondaire) : |
RAVAGEURS DES PLANTES |
Mechanisms and inheritance of resistance to panicle-feeding insects in sorghum bicolor [texte imprimé] / H.C. Sharma, Auteur ; J.W. Stenhouse, Auteur ; K.F. Nwanze, Auteur . - 1995 . - p 171-182. Langues : Anglais ( eng)
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
MECANISME DE LA RESISTANCE INSECTE PANICULAIRE SORGHO RESISTANCE AUX RAVAGEURS |
| Résumé : |
Sorghum midge, head bugs and eurystylus immaculatus and head caterpillars are the major pests of sorghum worldwide. Nonpreference and antibiosis are the major components of resistance to C. sorghicola. Evidence for compensation in grain mass following midge damage is not conclusive. Short, tight glumes make oviposition difficult and this is the most important factor associated with resistance to midge. Faster grain development and high tannin content of grain are also associated with resistance. Resistance to midge is governed by additive and nonadditive gene action but largely by the former. Resistance to head bugs is largely comprised of nonpreference for feeding and oviposition, antibiosis and tolerance of which nonpreference is the major component. Longer duration of glume covering of the grain, long glumes, panicle copactness, quicker grain hardening and possibly high tannin content are associated with resistance to bugs. There is no information on the genetics of resistance to head bugs. Loose-panicled genotypes are resistant to head caterpillars and resistance is largely governed by additive gene action. |
| Numéro du document : |
A 96000/H00 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
PROTECTION DES VEGETAUX |
| Bull2 (Theme secondaire) : |
RAVAGEURS DES PLANTES |
|
Mechanisms and inheritance of resistance to panicle-feeding insects in sorghum bicolor
