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A new spontaneous mutation of the pear variety Dr. Jules Guyot, named 'IGE 2002ʼ, was selected from a pear growing area in Catalonia. The clone was established in vitro from a 40-year-old tree, a highly recalcitrant material un- able to root by cuttings. An in vitro micropropagation protocol, with an average multiplication rate of 5, a 90% rooting, and an acclimation of 79% of the plantlets, was defi ned. Self-rooted plants were grown in two experimental stations, covering two distinct fruit growing areas. The main agronomic characteristics of the clone 'IGE 2002ʼ were evaluated during six seasons, 1997 to 2002. Blooming and harvest period were at a similar time than 'Dr. Jules Guyotʼ. Soluble solids concentration and acidity are also similar to 'Dr. Jules Guyotʼ. However, at the same harvest time, a lower fruit fi rmness of 'IGE 2002ʼ in comparison to 'Dr. Jules Guyotʼ indicated an advanced ripening. In addition, a fi ner fl esh texture of 'IGE 2002ʼ than 'Dr. Jules Guyotʼ, distinguished the former from the later variety. Important differences between both plot sites were found on cumulative fruit yield, fruit size, and fruit size distribution, of 'IGE2002ʼ grown on its own roots. However, the site did not affect the fruit quality parameters. Superior fruit yields were associated with higher vigor and yield effi ciency of the self-rooted variety.

Micropropagation and Field Evaluation of the Pear (Pyrus communis L.) `IGE 2002', A New Selection of the Cultivar Dr. Jules Guyot