EVALUATION OF THE GROWTH AND PHENOLOGICAL TRAITS OF TEN ROOTSTOCKS IN COMBINATION WITH PEAR CULTIVARS 'HOSUI', 'YALI' AND 'CONFERENCE'
We conducted a field experiment in the South Moravia region of the Czech Republic with ten rootstock cultivars and three pear cultivars (two Asian and one European) from 2009 and 2013, and evaluated the following traits: rootstock suckering, trunk suckering, and growth intensity of grafted cultivars, phenological traits and yield. Pear rootstocks such as Pyrodwarf, Pyriam, FOX 11, OH×F 333, BET (P. betulifolia), pear seedling and Conference seedling were evaluated as well as quince rootstocks such as MA, S1 and BA29. The results identified the pear seedling as the most sucker prone rootstock (3.4 suckers per tree on average) while Pyriam rootstock had the least suckers (0 tree-1). The Japanese pear cultivar Hosui on the pear seedling rootstock produced the most secondary suckers on the trunk (1.8 tree-1), followed by the European pear cultivar Conference on Pyrodwarf (1.7 tree-1). Conversely, in the first three years after planting on a permanent site the least number of suckers was observed in the trunk of the Chinese pear cultivar Yali and Conference seedling rootstock. Hosui was the most vigorous cultivar (an average increment of 48.3 cm) unlike Yali which had the least growth (an average increment of 41 cm). There were no significant differences in phonological characteristics due to rootstock but Yali and Hosui started to bloom 3.5 days earlier than Conference (irrespective of rootstock). Fruit yield at the start of the fruit-bearing stage was highest with Conference on the quince rootstocks BA29, MA and S1 (average 11.8 kg tree-1), followed by Hosui on pear seedling (8.7 kg tree-1) and Yali on pear seedling (7.9 kg tree-1).
Necas, T., Kovac, P. and Necasova, J. (2015). EVALUATION OF THE GROWTH AND PHENOLOGICAL TRAITS OF TEN ROOTSTOCKS IN COMBINATION WITH PEAR CULTIVARS 'HOSUI', 'YALI' AND 'CONFERENCE'. Acta Hortic. 1094, 123-130
Pyrus pyrifolia, nursery traits, suckers, vigour, fruit production