Most of the wild native Phalaenopsis species are diploids, and the tetraploid cultivars, however, are successfully developing for the market in the recent years. Therefore, the tetraploid Phalaenopsis hybrids become popular in the market due to the fact that the tetraploid plants have bigger inflorescence and higher quality of their corolla and pedicels. On the other hand, only a few wild species of Phalaenopsis are tetraploid and are used in the breeding program to produce new hybrids or cultivars. Consequently, the genetic base of the cultivars of Phalaenopsis in the market nowadays is considerably inadequate and the achievement of breeding for the new-type cultivars is limited. To obtain a superior new-type cultivar by integrating the desired characteristics (e.g. fragrance and color) of a wild species of Phalaenopsis, the orchid breeders attempted to develop new triploid cultivars by means of interspecific hybridization of the wild species of diploid and tetraploid. However, most of the triploid cultivars are highly sterile, and therefore cannot be further improved. Hence, there is a need of providing a simplified and effective breeding technique to obtain new polyploid cultivars of Phalaenopsis.
Most of the wild native Phalaenopsis species are diploids, and the tetraploid cultivars, however, are successfully developing for the market in the recent years. Therefore, the tetraploid Phalaenopsis hybrids become popular in the market due to the fact that the tetraploid plants have bigger inflorescence and higher quality of their corolla and pedicels. On the other hand, only a few wild species of Phalaenopsis are tetraploid and are used in the breeding program to produce new hybrids or cultivars. Consequently, the genetic base of the cultivars of Phalaenopsis in the market nowadays is considerably inadequate and the achievement of breeding for the new-type cultivars is limited. To obtain a superior new-type cultivar by integrating the desired characteristics (e.g. fragrance and color) of a wild species of Phalaenopsis, the orchid breeders attempted to develop new triploid cultivars by means of interspecific hybridization of the wild species of diploid and tetraploid. However, most of the triploid cultivars are highly sterile, and therefore cannot be further improved. Hence, there is a need of providing a simplified and effective breeding technique to obtain new polyploid cultivars of Phalaenopsis.
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