| dc.creator | Montealegre,Jaime | |
| dc.creator | Valderrama,Luis | |
| dc.creator | Sánchez,Soledad | |
| dc.creator | Herrera,Rodrigo | |
| dc.creator | Besoain,Ximena | |
| dc.creator | Pérez,Luz María | |
| dc.date | 2010-03-01 | |
| dc.date.accessioned | 2019-05-03T12:44:41Z | |
| dc.date.available | 2019-05-03T12:44:41Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000200001 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/85112 | |
| dc.description | Biocontrol of Rhizoctonia solani in tomatoes cultivated under greenhouse and field conditions was analyzed using the Trichoderma harzianum mutants Th650-NG7, Th11A80.1, Th12A40.1, Th12C40.1 and Th12A10.1 and ThF2-1, respectively. Their innocuousness on tomato cultivars 92.95 and Gondola (greenhouse assays), and on cultivar Fortaleza (field assays) was established. Alginate pellets (1.7 g pellets/L soil) containing c.a1 x 10(5) colony forming units (cfu)/g pellet were applied to a soil previously inoculated with R. solani at transplant (greenhouse) or to a naturally infected soil (field). Controls considered parental wild strains, a chemical fungicide and no additions. Th11A 80.1, Th12A10.1 and Th650-NG7 prevented the 100% mortality of tomato plants cv. 92.95 caused by R. solani, and the 40% mortality in tomato plants cv. Gondola (greenhouse assays). Mortality reduction was reflected in canker level lessening and in plant parameters increases (development, fresh and dry weights). A different degree of susceptibility of tomato plants was observed, being Gondola cv. more resistant than 92.95 cv. to infection in a soil previously inoculated with R. solani. Tomato plants of cv. Fortaleza did not show mortality in naturally infected soils (field assays), where the mutant ThF2-1 reduced significantly the canker level caused by R. solani. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Pontificia Universidad Católica de Valparaíso | |
| dc.relation | 10.4067/S0717-34582010000200001 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Electronic Journal of Biotechnology v.13 n.2 2010 | |
| dc.subject | bioantagonism | |
| dc.subject | field assays | |
| dc.subject | greenhouse assays | |
| dc.subject | root rot | |
| dc.subject | tomato | |
| dc.title | Biological control of Rhizoctonia solani in tomatoes with Trichoderma harzianum mutants | |
