Articles
PEAR PRODUCTION ON ‘OLD HOME × FARMINGDALE’ (OHXF) INTERSTEM-ROOTSTOCK COMBINATIONS
Article number
800_86
Pages
645 – 652
Language
English
Abstract
Trials established at Hood River and Medford, Oregon in 1996 to evaluate the performance of pear cultivars on several Old Home × Farmingdale (OHxF) clonal rootstock and interstem combinations were completed in 2005. The rootstock selections (OHxF 18, 97, 217, 333 and 513) are semi-vigorous to vigorous and easy to propagate by hardwood cuttings, while the interstem selections (OHxF 40, 51, 69 and 97) are considered semi-dwarfing and relatively difficult to propagate by hardwood cuttings.
Non-interstemed rootstocks were utilized as controls.
Fruiting cultivars were Bartlett and Bosc at Medford, and Bartlett, Golden Russet Bosc, DAnjou and Columbia Red Anjou at Hood River.
Bearing began in the third leaf and production for the third through the tenth leaf were evaluated.
At both locations and over all cultivars, there was no significant effect (P>0.05) of interstem on the number of fruit per tree, tree yield, or fruit weight.
In addition, at Medford there was no significant effect of interstem on trunk cross-sectional area (TCSA) or yield efficiency.
However, rootstock effects were significant (P<0.05) in most cases.
Rootstock effects on the number of fruit per tree and yield were significant with all cultivars except Columbia Red Anjou. At Medford, OHxF 97 had the highest yield and OHxF 513 had the lowest yield for both Bartlett and Bosc, and OHxF 513 had lowest yield efficiency.
At Hood River, OHxF 217 had the highest yield for Golden Russet Bosc and Bartlett, while OHxF 513 had highest yield for dAnjou. At Hood River fruit weight in Columbia Red Anjou, Bosc, and dAnjou and yield in Columbia Red Anjou and Bosc were significantly affected by rootstock x interstem interactions.
At Hood River Columbia Red Anjou and dAnjou main scaffold branches were more horizontal when OHxF 51 was used as either a rootstock or interstem
Non-interstemed rootstocks were utilized as controls.
Fruiting cultivars were Bartlett and Bosc at Medford, and Bartlett, Golden Russet Bosc, DAnjou and Columbia Red Anjou at Hood River.
Bearing began in the third leaf and production for the third through the tenth leaf were evaluated.
At both locations and over all cultivars, there was no significant effect (P>0.05) of interstem on the number of fruit per tree, tree yield, or fruit weight.
In addition, at Medford there was no significant effect of interstem on trunk cross-sectional area (TCSA) or yield efficiency.
However, rootstock effects were significant (P<0.05) in most cases.
Rootstock effects on the number of fruit per tree and yield were significant with all cultivars except Columbia Red Anjou. At Medford, OHxF 97 had the highest yield and OHxF 513 had the lowest yield for both Bartlett and Bosc, and OHxF 513 had lowest yield efficiency.
At Hood River, OHxF 217 had the highest yield for Golden Russet Bosc and Bartlett, while OHxF 513 had highest yield for dAnjou. At Hood River fruit weight in Columbia Red Anjou, Bosc, and dAnjou and yield in Columbia Red Anjou and Bosc were significantly affected by rootstock x interstem interactions.
At Hood River Columbia Red Anjou and dAnjou main scaffold branches were more horizontal when OHxF 51 was used as either a rootstock or interstem
Publication
Authors
E.A. Mielke, J. Turner, D. Sugar
Keywords
Pyrus communis L., yield, fruit size
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