Location: Fruit and Nut Research
2013 Annual Report
The development of new rootstocks and management practices for the control of soilborne diseases and nematodes of peach is an urgent need of the southeastern U.S. peach industry. This has become even more apparent since the introduction of Guardian peach rootstock in 1993. Guardian has been widely adopted by the southeastern U.S. peach industry and although it has provided exceptional resistance to peach tree short life (PTSL), it is highly susceptible to Armillaria root rot (ARR) which has now overtaken PTSL as the primary cause of premature peach tree death. MP-29, a plum x peach hybrid rootstock selections bred in this program, was released in 2011 and has been scaled up for commercial production by licensed nurseries. MP-29 offers superior resistance to both PTSL and ARR. Several more rootstocks are nearing release. Evaluations are continuing and the scaling up of materials to support expected release(s) is progressing.