鵝鑾鼻燈籠草與長壽花重瓣品種之花粉活力與雜交結實

Pollen Viability and Fruit Setting of Interspecific Hybridization between Kalanchoe garambiensis and Commercial Cultivars of Double-typed Kalanchoes

本研究測定鵝鑾鼻燈籠草與長壽花重瓣品種之花粉發芽率，並進行兩者之種間雜交。鵝鑾鼻燈籠草自交系之花粉發芽率為17%-46%，而長壽花重瓣品種的花粉發芽率僅0.5%-11.3%。後者花粉發芽率較高之品種為'Kelly'及'Karen'。在鵝鑾鼻燈籠草與重瓣品種雜交的26個組合中，除了'Middler'（♀）與鵝鑾鼻燈籠草93-1（♂）組合未著果之外，其餘雜交組合之著果率皆為100%。'Naomi'×鵝鑾鼻燈籠草93-1、'Mona'×93-1、'Sorvino'×93-1、'Naomi'×93-13及'Middler'×93-13等5個組合之種子發芽率為13.8%-23.5%，其餘雜交組合的種子發芽率則在10%以下。有15個雜交組合成功產生後代，共獲得276株子代。 Pollen germination and interspecific hybridization between Kalanchoe garambiensis and double-typed kalanchoes were studied. The pollen germination rate of K. garambiensis inbreeding lines was 17%-46%, and that of double-typed kalanchoes was 0.5%-11.3%. Pollen germination rate of 'Kelly' and 'Karen' was the highest among double-typed kalanchoe. Except the crossing of 'Middler' × K. garambiensis 93-13, all other combinations of crossing resulted in 100% fruit set. The germination rate was 13.8%-23.5% for seeds from 'Naomi' × K. garambiensis 93-1, 'Mona' × 93-1, 'Sorvino' × 93-1, 'Naomi' × 93-13 and 'Middler' × 93-13. The germination rate of seeds from other crossings was less than 10%. There were 15 crossing combinations that successfully produced progenies. A total of 276 hybridized plants were obtained from the trial.