Hoja Blanca

Autor: CIAT – FLAR, Alexander Silva

Fecha: 2018-05-15

Descripción:  The disease is caused by the tenuivirus Rice hoja blanca virus (RHBV), transmitted by the planthopper Tagosodes orizicolus. Gene discovery for RHB resistance is so scarce that, so far, only one major QTL has been reported in Fedearroz 2000, the most resistant variety in Colombia. Recently, new sources of resistance have been identified from a diverse panel of Oryza sativa indica germplasm. The aim of this study was to perform QTL mapping to get a better understanding of the genetic bases of RHB resistance in these new sources, using two ways of evaluating the disease – incidence and severity.