Studied on growth, flowering and propagation of Nerine.

本試驗主要以秋植品系的納麗石蒜為材料，探討其在台灣栽培之生育、開 花習性，分別於霧峰及魚池等不同氣溫地區種植，觀察其生育，調查、分 析其影響生育因子與園藝性狀，並研究其繁殖方法，以期建立納麗石蒜之 基本栽培資料。在兩試驗地的切花性狀，並無明顯的差異，平均開花率 有60﹪以上，花莖的長度平均47.5cm以上，霧峰到達盛花期比魚池早，尤 其以Early Snow為早7天。在植株生育方面，魚池試驗地的葉長，根數， 分檗球數皆比霧峰的高，且霧峰的葉較早黃化枯萎。以FCR螢光染色觀察 ，其花粉活力皆在 40﹪以上，30℃會造成花粉管末端破裂，以在20℃的 離體培養的發芽率約達50﹪為最高。在傳統的繁殖中，每個種球長的小球 數，以雙鱗片繁殖法的42.8個為最高，雙鱗片繁殖以20℃、25℃為最適 ，10℃幾乎沒有長小球。以沒有前處理的長球率及小球重為最高，NAA的 效果最差，且大多長癒傷組織。培養時仍以沒有生長調節劑的小球重為最 高，高濃度的BA小球有畸型的現象發生。在微體繁殖方面，以45℃的溫水 的消毒方式，其發黴率最低。培養基中以加有活性碳及生長調節劑者，小 球重較重為195.7mg，培養的溫度以20℃為最好，平均長球率為78.3﹪， 在生長調節劑的組合中，以NAA 1ppm、BA 1ppm的組合，小球重210.3mg為 最好。而BA濃度以1-3ppm的結果較好，並顯示IBA有促進作用，以IBA 1ppm為最好，而IBA 2.5ppm則有毒害的現象。Autumn-grown Nerines at Wu-Feng and Yu-Chyu were studied to observe the adaptability, growth and flowering, and methods of propagation for fundumental data in Taiwan. The average ratio of blooming is over 60%, and the flower stalks were over 47.5cm. Time of full bloom at Wu-Feng is earlier than that at Yu-Chyu, by 7 days earlier for cv. ''Early Snow''. Yu-Chyu was more than Wu-Feng in length of leaves, number of roots and offsets,and the leaves at Wu-Feng were yellow earlier than those at Yu-Chyu. The viability of pollen grains were over 40%,and the end of pollen tubes were broken at 30℃.The germination of pollen was over 50% at 20℃. In mass propagation, the bulblet number per bulb has 42.8 via twin- scaling, and the optimum temperature between 20℃ and 25℃. There was no bulblet formation at 10℃. The production and weight of bulblet without treating plant growth regulators was the best, and that with pretreatment of NAA was the worst, but it mostly producted calli. Weight of bulblet without treating growth regulators was the heaviest,and scales treated high concentration of BA appeared malformations. In micropropagation, the contamination was less in treating with 45℃ hot-water. Weight of bulblets were 195.7mg with activated charcoal and growth regulators in medium. The optimum temperature for incubator was at 20℃, and the production of bulblet was 78.3%. Weight of bulblets were 210.3mg with treating NAA 1ppm and BA 1ppm, and 1-3 ppm of BA concentration was better.In result,IBA have synergistic with 1ppm, but have phytotoxicity with 2.5ppm