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| Content Provider | African Journals Online (AJOL) |
|---|---|
| Author | C Atteke A.N Lepengue B M’batchi I Mouaragadja S Ake |
| Abstract | La roselle (Hibiscus sabdariffa L. var. sabdariffa) est une plante maraîchère de la famille des Malvaceae cultivé au gabon et qui présente au moins 13 cultivars différents. Cette plante est victime d'une sévère pourriture causée par le couple fongique Phoma sabdariffae Sacc-Trichosphaeria sp., correspondant respectivement aux formes asexuée et sexuée d'un même agent pathogène. En vue de caractériser ces 2 champignons et en dégager les principales différences, une étude comparative a été menée sur les quadruples plans biomorphologiques, culturaux, biochimiques et pathogéniques. Les résultats montrent qu'en plus des différences biomorphologiques, Phoma sabdariffae a présenté un plus grand taux de croissance sur le milieu nutritif PDA, et une meilleure accumulation de composés glucidiques et protéiques que Trichosphaeria sp. Ce champignon a été significativement plus agressif. En outre, une bande protéique supplémentaire de PM égal 18 kD a été observée dans son électrophorégramme. Enfin, 3 cultivars se sont montrés résistants à ces 2 pathogènes, ce sont VV1, RV1 et RR1.Mots clés : Phoma sabdariffae, Trichosphaeria sp., Roselle, biomorphologie, pathogénicité. |
| Ending Page | 9 |
| Starting Page | 1 |
| File Format | |
| e-ISSN | 10152288 |
| DOI | 10.4314/aga.v22i1.62307 |
| Journal | Agronomie Africaine |
| Issue Number | 1 |
| Volume Number | 22 |
| Language | English French |
| Publisher Date | 2010-11-25 |
| Access Restriction | Open |
| Subject Keyword | Agriculture Food Sciences Phoma sabdariffae Trichosphaeria sp. Roselle biomorphologie pathogénicité.ve |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agricultural and Biological Sciences |
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