低溫對紫羅蘭開花習性之影響

本研究之目的為觀察紫羅蘭在台灣栽培的可行性，並檢討低溫對其開花習性之影響。於冬季栽培19個商業品種的結果顯示，除了極晚生種之外，其它品種均能正常開花，唯極早生種開花最早，但花穗較短，而早生種開花略晚，但花穗較長，較適合經濟栽培。另外將「初紅」、「神奇白2號」、「黃波」、「晚麗」四個品種在苗期時以人工低溫（日／夜溫15／10℃）處理2∼4星期，結果顯示經低溫處理能提早開花且花穗較長，尤其以極早生品種「初紅」及「神奇白2號」，早生品種「黃波」效果最顯著。如果將「初紅」、「秋之紅」、「早青」、「雪波」四個品種以小盆苗和穴盤苗以人工低溫（10℃）處理3∼5星期，結果顯示小盆苗的花期比穴盤苗提早約一個星期，而低溫處理的時間以4星期對株高及花穗長度的表現最為優良。

關鍵字

紫羅蘭；春化作用；低溫處理

並列摘要

This experiment was attempted evaluate the possibility of growing stock in Taiwan and to invested the effect of low temperature on it's flowering performance. Nineteen commercial cultivars were planted in the winter. All cultivars, except the late flowering ones, were able to flower normally. The extremely early cultivars bloomed first followed by the early ones were. However, their spike length was shorter. Early flowering cultivars were bloomed a little bit lately, the floral spike length was longer and the quality was also better. Four commercial cultivars'Early red', 'Magic white No.2', 'Yellow wave' and 'Lately beauty', after seed germination, were planted in the plug trays and subjected to a 12-hr dual temperature range at 15/10℃(day/night) for 2-4 weeks at a week interval, and then they were grown in the greenhouse, non-treated plants served as control. All the treated plants flowered earlier and they were found with longer spike. The effect of low temperature was most promident in the extremely early and early flowering cultivars. Four commercial cultivars'Early red', 'Fall red', 'Early blue' and 'Snow wave', potted and plugged seedlings were also subjected separately to the low temperature at 10℃ for 3-5 weeks at weekly interval. The potted seedlings bloomed one week earlier. Low temperature for 4 weeks was the best treatments that have higher plant and longer flower cluster.

並列關鍵字

Stock ； Vernalization ； Cooling

國際替代計量

低溫對紫羅蘭開花習性之影響

全文下載

主題瀏覽