Pollination techniques, fruit loss and pollen viability in Eucalyptus marginata (Jarrah)
Wheeler, M.A., Fairbanks, M.M. and McComb, J.A. (2002) Pollination techniques, fruit loss and pollen viability in Eucalyptus marginata (Jarrah). In: Plant breeding for the 11th millenium: 12th Australasian Plant Breeding Conference, 15-20 September, Perth, Western Australia pp. 883-887.
Techniques were evaluated to develop an effective controlled-pollination technique for jarrah (Eucalyptus marginata). Pollination success was scored by counting pollen tubes in squashed styles. The most effective method to isolate the flowers after emasculation was to wrap each in a twist of aluminium foil. Pollen application was best when several freshly-picked, newly-opened flowers were wiped across each receptive stigma. Stigmas were receptive from 3-6 days after anthesis and most pollen tubes were observed pollination in the middle of the flowering season. Very few mature fruits resulted from any controlled-pollution technique. Bud, flower and fruit-loss rates under natural conditions were recorded (in five clones and five wild trees) and 0-13% of buds remained on the trees to develop into fruits. The percentage of pollen germination from different trees was very variable. Pollen was most fertile in the middle of the flowering season, environmental conditions had little effect. Fresh pollen in anthers was more fertile than pollen separated using a fine sieve.
|Publication Type:||Conference Paper|
|Murdoch Affiliation:||School of Biological Sciences and Biotechnology|
|Publisher:||Australasian Plant Breeding Association|
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