Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 243
5.8 What is allogamy?
ОглавлениеAllogamy occurs when fertilization of the flower of a plant is effected by pollen donated by a different plant within the same species. This is synonymous with (cross‐pollination or) cross‐fertilization or out breeding, involving the actual fusion of gametes (sperm and ovum). An incomplete list of allogamous species is presented in Table 5.3.
Table 5.3 Examples of predominantly cross‐pollinated species.
| Common name | Scientific name |
| Alfalfa | Medicago sativa |
| Annual ryegrass | Lolium multiflorum |
| Banana | Musa spp. |
| Birdsfoot trefoil | Lotus corniculatus |
| Cabbage | Brassica oleracea |
| Carrot | Daucus carota |
| Cassava | Manihot esculentum |
| Cucumber | Cucumis sativa |
| Fescue | Festuca spp. |
| Kentucky bluegrass | Poa pratense |
| Maize | Zea mays |
| Muskmelon | Cucumis melo |
| Onion | Allium spp. |
| Potato | Solanum tuberosum |
| Radish | Raphanus sativus |
| Rye | Secale cereale |
| Sugarbeet | Beta vulgaris |
| Sunflower | Helianthus annuus |
| Sweet potato | Ipomoea batatus |
| Watermelon | Citrullus lanatas |
Though predominantly pollinated, some of these species may have another reproductive mechanism in breeding and crop cultural systems. For example, banana is vegetatively propagated (and not grown from seed) and so are cassava and sweet potato; cabbage and maize are produced as hybrids.
