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2017
- handle: 10670/1.2i8fp1
- 0378-1844
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http://www.redalyc.org/revista.oa
Interciencia
Mots-clés
Multidisciplinarias (Ciencias Sociales) capsici ITS Region Metam Sodium Capsicum annuum L ‘Robusto’ RootstockSujets proches
Vegetable kingdom Plantae Plant kingdom Vegetation Wildlife Flora illnessCiter ce document
Esteban Sánchez-Chávez et al., « AN EFFECTIVE STRATEGY TO REDUCE THE INCIDENCE OF Phytophthora ROOT AND CROWN ROT IN BELL PEPPER », Interciencia, ID : 10670/1.2i8fp1
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Résumé
"This work evaluated the effectiveness of combining grafted bell pepper and metam sodium fumigated soil to reduce the incidence of Phytophthora root and crown rot, a disease that significantly reduces crop yields. The experiment was carried out during 2011 in Chihuahua, Mexico. Six trials were estab-lished in a previously fumigated soil using ‘Facinato’ variety grafted onto ‘Robusto’ and ‘Terrano’ rootstocks, besides four self-rooted varieties. To identify the pathogen, ribosomal loci corresponding to the ITS region were amplified and sequenced. The general linear model described the increase in disease incidence in all trials. Grafted plants had a lower slope of dis-ease incidence than the four self-rooted varieties. Results indi-cated that final disease incidence (Yf) of the varieties ranged 37-69%, while grafted plants exhibited a Yf of only 13-16%. Fumigation caused a better reduction of disease incidence when used for grafted plants. Disease onset and slope increase coincided with the possible fumigant degradation. These find-ings expand present knowledge regarding plant response to preventive fumigations and grafted plants use to decrease nat-ural infection in bell pepper plants caused by this oomycete."