Probleme der Massenvermehrung der Faser-Yucca-Pflanzen

Summary Problems of propagation of theYucca filamentosa (probably hybrids ofY filamentosa Y. flaccida) cultivated in Europa are discussed.The usual and most productive mode of propagation consists in laying out pieces of the rhizomes 7 to 10 cm in length.Another way to propagate the Yccua is to cut the suckers which will drive out from the rhizome of older plants or when the plants had developed an inflorescence and ripened the seeds.A third way to increase the number of Yucca plants is to sow the seeds which are developed in numbers of 200–300 in the numerous capsules of the inflorescence.In the native countries of the Yucca seed production only occurs after pollination of the flowers by the Pronuba moth. In all other countries where the insect does not live, seed production is only possible after artificial pollination of the flowers by hand with a fine brush. In all fruits produced by both modes of pollination are numbers of empty seeds in distinct percentage. The fiber Yuccas are not constant when propagated by seeds. By sowing these seeds there will rise a great number of different forms by segregation.

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mit 17 Abbildungen im Text