Self-incompatibility in woody horticultural species.

摘要: Woody horticultural species can be separated commercially into fruit and nut crops, including apple (Malus pumila), cherry (Prunus avium) almond dulcis), ornamentals such as camellia (Camellia japonica), liquidambar (Liquidambar styraciflua) rhododendron (Rhododendron spp). Most woody are multiplied vegetatively, so the breeding system is generally not important for propagation. It has implications, however, regarding economic exploitation of plant, even though a single may have multiple uses. The cherry, example, grown either crop or an ornamental, depending on cultivar. In former, product fruit, pistil-pollen compatibility considerations paramount, in contrast to latter where level fertility important. Even complete sterility tolerated vegetatively-propagated ornamentals. Breeding improvement crop, development new cultivars, another area it essential familiar with species. economics cultivation thus implications self-incompatibility, mechanism result low yield capacity, been selected against (Rowlands 1964).