| Autor: |
Bairrão, Margarida, Trindade, Manuel, Valdiviesso, Teresa, Silva, Márcia, Trindade, Cândida Sofia, Ferreira, Ricardo Boavida, Cordovil, Cláudia, Machado, Helena, Bairrão, Margarida, Trindade, Manuel, Valdiviesso, Teresa, Silva, Márcia, Trindade, Cândida Sofia, Ferreira, Ricardo Boavida, Cordovil, Cláudia, Machado, Helena |
| Zdroj: |
Silva lusitana; January 2021, Vol. 29 Issue: 2 p115-131, 17p |
| Abstrakt: |
Phytophthora cinnamomiis a major plant destructive pathogen with a wide range of hosts and is considered one of the main causes of Quercusspp. decline in the Southwest of the Iberian Peninsula. This study compares two inoculation tests, using simple and fast methodologies, in order to select the most aggressive isolate to use in future Quercus suberinoculation experiments. To evaluate P. cinnamomiintraspecific variability,cork oak excised shoots were inoculated with five isolates, obtained from Q. suber, Quercus rotundifoliaand Castanea sativastands. These isolates were used for in vitroinoculation of a Trifolium subterraneumcultivar available in Portugal in order to assess its usefulness as a "model plant" in rapid screening tests. This study revealed intraspecific variability of P. cinnamomiisolates to cause lesions in Q. suberexcised shoots and in the number of T. subterraneumdeveloping lesions on stem and leaves. However, there was no correspondence between the aggressiveness of the isolates in subterranean clover and in the cork oak. Only one isolate showed consistency in aggressiveness regardless of the host species. In conclusion, T. subterraneumis not a good "model plant" for the evaluation of P. cinnamomiisolates aggressiveness. |
| Databáze: |
Supplemental Index |
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