‘PR1’ Peach Rootstock

Influence of Scion and Rootstock on Incidence of Peach Tree Short Life

Previous work has suggested that peach scion cultivar exerts a significant influence on incidence of peach tree short life (PTSL) in trees budded onto Nemaguard and Flordaguard seedling peach rootstocks. If this influence is consistent across a range of rootstocks then the influence of scion cultivar might offer a new tool for the management of PTSL. Growers could minimize losses on those sites...

Reproduction and Development of Meloidogyne incognita and M. javanica on Guardian Peach Rootstock.

Guardian peach rootstock was evaluated for susceptibility to Meloidogyne incognita race 3 (Georgia-peach isolate) and M. javanica in the greenhouse. Both commercial Guardian seed sources produced plants that were poor hosts of M. incognita and M. javanica. Reproduction as measured by number of egg masses and eggs per plant, eggs per egg mass, and eggs per gram of root were a better measure of h...

Alterations in Root Morphology of Rootstock Peach Trees Caused by Mycorrhizal Fungi

Biological Control of Crown Gall on Peach and Cherry Rootstock Colt by Native Agrobacterium radiobacter Isolates

Crown gall caused by Agrobacterium tumefaciens is the major limiting factor in raising healthy stone fruit plants in nurseries. The incidence of crown gall varies from 4 to 97.5 per cent at different locations resulting in out right rejection of an average of 30 per cent stone fruit plants in nurseries. Agrobacterium radiobacter strain K-84 has been reported to provide nearly complete control o...

Physiological Effects Induced by Copper Excess in Peach Rootstock MrS 2/5 and GF 677 Growth In Vitro

In this work the physiological effect of copper excess on the peach rootstock MrS 2/5 and GF 677 was studied by means of an in vitro system. Two different copper treatments (10 and 100 μM CuSO4) for each rootstock were carried out and compared to a control containing 0.1 μM of CuSO4. Relative growth rate and copper concentration inside rootstock tissues were measured after 21 days from the begi...