Abstract
SummaryGibberellin induced parthenocarpic Conference pears started to grow sooner than seeded or naturally parthenocarpic fruits, but their growth rate declined earlier. At harvest the seeded fruits were bigger than GA3-treated and naturally parthenocarpic fruit.Respiration rates in peel and pulp of GA3-treated pears and in the peel of naturally parthenocarpic fruit were higher than in the controls. Respiration rates of peel were always higher than those of pulp or core.Within four weeks of petal fall the titratable acidity of GA3-treated fruits was somewhat higher than that of seeded or naturally parthenocarpic controls. In all treatments acidity fell rapidly after this time and declined further until harvest.
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