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The Proteaceae are divided into two subfamilies: the Proteoideae, best represented in southern Africa, and the Grevilleoideae, concentrated in Australia and South America and the other smaller segments of Gondwana that are now part of eastern Asia.Africa shares only one genus with Madagascar, whereas South America and Australia share many common genera — this indicates they separated from Africa before they separated from each other. However, Protea kilimanjaro is found in the chaparral zone of Mount Kenya National Park.The ease of handling and packaging of the cut stems and the last category is to consider the perceived market value of the cultivar Some Protea flower species, like the King Protea flower, are self-pollinating flowers.Other Protea species, however, like the Protea cordata, Protea decurrens and the Protea scabra are self-incompatible and thus rely on cross-pollination for successive seed set.traits considered by breeders in the selection process for cultivation are long lasting bloom, flowering time, plant architecture, general appearance and adaptability.There are four main methods of selecting Protea flowers for further cultivation: Mass selection, Single plant clonal selection, Chance interspecific hybrid selection, Controlled-pollination interspecific hybrid selection.
The germinating seeds should be planted in a medium in pots before the developing roots are 10mm long.
The main vectors responsible for the transfer of pollen in Protea cultivation are birds, insects and wind.
There are some Protea species which exhibit both self-pollination as well as cross-pollination as a method of reproduction.
There are three categories of traits that has to be considered before developing a new cultivar.
The yield or production capacity of the cultivar has to be considered.
The ovary is protected by the receptacle and thus not seen when looking at the flower, the anthers are however present at the top of the flower which can then easily transfer the pollen to the vectors. Protea, Leucospermum and Leucadendron are diploid organisms and thus they can freely hybridise with closely related species of Protea flowers to form a new cultivars.