Abstract
Diallel cross and ovule culture were carried out among 15 Alstroemeria species. Ovules harvested 14 days after pollination were cultured on 1/2MS medium containing 3% sucrose at 20°C under a16-hr photoperiod. Embryo germination occurred in 196 out of 210 combinations of the diallel. A. angustifolia, A. ligtu, A. magenta and A. pelegrina showed wide cross-compatibility with not only Chilean but Brazilian species as well. When A. aurea, A. diluta, A. garaventae and A. zoellneri each served as a female parent, the percentage embryo germination was low in some crosses, but some germination took place in all combinations. A. inodora, A. maginfica, A. psittacina and A. pulchra exhibited unilateral interspecific incompatibility in many combinations.
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