Peach Tree Short Life in Rio Grande do Sul State, Brazil

The Peach Tree Short Life (PTSL) is a syndrome that causes severe damage to peach trees, usually between one and eight-years-old, which can lead the scion death. In Brazil, it has importance mainly in Rio Grande do Sul State, largest Brazilian producer. First reported Pelotas area, late 1970s, continues cause damage, with varying intensities among years. Several have been national international literature, involving biotic abiotic factors. Sul, due predominant use of mixtures pits from canning industry for rootstock production, not possible know varietal identity tree root system commercial orchards. This genetic variability heterogeneity at same time under environmental selection pressure, be used clonal program situ, search tolerant sources. another strategy developed by Embrapa Clima Temperado, evaluation cultivars, species interspecific hybrids as rootstocks are also underway. present paper, we report main technical scientific advances on PTSL focus quality nursery trees.