Articles

SELECTION OF PRUNUS MUME AS ROOTSTOCKS FOR PEACHES ON PTSL SITE

Article number
1084_10
Pages
89 – 96
Language
English
Abstract
Since the late 1970s several peach orchards in Rio Grande do Sul State, Brazil, have been affected by Peach Tree Short Life (PTSL). It is well documented that root-stocks are associated with the syndrome.
Several Prunus genotypes are being studied at Embrapa Temperate Agriculture as rootstocks for PTSL tolerance for Southern Brazil. Prunus mume has been reported as resistant to Agrobacterium tumefaciens, Meloidogyne javanica and M. incognita, and shows some tolerance to drought.
In this trial, four peach cultivars were budded on 550 Prunus mume seedlings and planted in a field with PTSL history.
In 2012, 49 trees were selected and the following variables were registered: trunk diameter (TD), trunk cross-sectional area (TCSA), fruit number/tree before thinning (FNBT) and at harvest time (FNHT), yield/tree (Y), fruit set (FSE) and yield efficiency (YE), fruit weight (FW), longitudinal (LFD) and transversal fruit diameter (TFD), soluble solids content (SSC) and firmness (F). No PTSL symptoms were observed on peach/P. mume trees in the first three years after planting.
Several differences related to tree development, yield, yield efficiency and fruit quality were observed among plants on the 49 selected P. mume seedlings.
The genotypes CPACT-UME-03, CPACT-UME-04, CPACT-UME-05, CPACT-UME-11, CPACT-UME-13, CPACT-UME-26, CPACT-UME-46 and CPACT-UME-47 stood out in 2012.

Publication
Authors
N.A. Mayer, B. Ueno, G.L. Reighard
Keywords
Rosaceae, Prunus persica, Peach Tree Short Life, interspecific budding
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