Winter Bud Content According to Position in 3‐year‐old Branching Systems of ‘Granny Smith’ Apple

Organ content in over-wintering apple buds

The number of pre-formed organs is investigated by Costes (pp. 581-588) in winter buds of ?Granny Smith? apple tree with respect to bud position. Total number of organs is shown to depend on meristem position and age. In axillary buds, the mean number of total organs increases with the number of flowers. In terminal buds, a trade-off is observed between leaf and flower primordia.