ISHS Acta Horticulturae 384: X International Symposium on Apricot Culture
POLLINATION COMPATIBILITY OF APRICOTS GROWN IN CENTRAL OTAGO, NEW ZEALAND |
| Authors: | G.F. McLaren, J.A. Fraser, J.E. Grant |
| Keywords: | pollination, compatibility, pollenizer |
| Abstract:
Self-incompatibility in pollination was confirmed in several commercial apricot cultivars, particularly 'Sundrop', 'Valleygold' and 'CluthaGold'. In a 2 ha planting of 'Sundrop', fruit set was highest in the first four rows next to a pollenizer but declined to unacceptably low levels over the remainder of the block. The addition of extra bee hives in the following year increased bee numbers per tree but failed to improve set beyond the first four rows. Fruit set was satisfactory, however, where pollenizers were present within the block, even in relatively low proportions (3%). Hand pollination of 'Sundrop' and 'Moorpark' with 32 genetically diverse apricot cultivars failed to indicate that sterility groups, such as those found in cherries and plums, occurred within apricot. Self-incompatibility occurred in some but not all of the 'Clutha' selections ('Moorpark' x 'Sundrop'). Incompatibility of 'Sundrop' was overcome in the laboratory at 20°C but not at 10°C or in the field. | |
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