洋桔梗育苗

The Seedling Nursery of ＂Eustoma＂

朱建鏞(Chien-Young Chu) ； 江純雅(Chun-Ya Chiang) ； 丁玉峰(Yu-Fong Ding)

《臺中區農業改良場特刊》 128號 (2015/06) Pp. 1-9

摘要

洋桔梗品種的種原有3種，由於分佈緯度廣，原生地溫度環境差異大，因此品種間育苗的適溫不相同，在商業育苗前需先進行種子發芽試驗。洋桔梗為光發芽種子，播種期需有3000 lux以上的光強度，播種介質以能提供固／液／氣相為1/1/1的環境較佳。洋桔梗生長過程中遭遇逆境會進入簇生化生長，對於逆境最敏感時期為生長至2～3節，也就是實生苗即將出售到定植的時期。此期間避免遭遇缺水、高溫（30℃以上）、低溫（15℃以下）、短日等。根活性高的種苗比較不易因逆境而簇生化。建議播種作業為：1.種子發芽試驗；2.準備理想栽培介質；3.播種後2－4週6∼10℃暗環境、8週光環境（3,000 lux以上），日溫低於30℃，夜溫低於20℃。夏季栽培（7月播種苗）建議用大穴格培養10週齡的種苗定植。

關鍵字

種子發芽試驗 ； 溫度 ； 光度 ； 介質 ； 簇生化 ； 穴盤苗

並列摘要

＂Eustoma＂ cultivars are developed from three species, which distribute in a wide area with various temperature environment. Therefore, the suitable temperature for each cultivar is different. It is necessary to test seed germination before sawing. ＂Eustoma＂ is a light requirement for seed germination, the least light intensity is more than 3000 lux. The medium which provides solid/liquid/gas phases as well as 1/1/1 in volume is better. Stress environment results in rosette ＂Eustoma＂. The sensitive stage is between the period from developing 2_(nd) node to 3_(rd) node. In other words, the period is between selling seedlings to planting. During this period, seedlings keep from dry out, high temperature(higher than 30℃ ), low temperature(lower than 20℃ ), short days and etc. ＂Eustomas＂ with higher root activity are more tolerance to stress environment. The SOP for propagating ＂Eustoma＂ is in the following: 1. Seed germination test, 2. Prepare ideal medium, 3. After sawing: 6-10℃ dark environment for 2-4 wks, than light environment (more than 3000 lux), day temperature lower than 30℃, night temperature lower than 20℃ . In summer (sawing in July), the seedling sawing in larger plug and 10-wk-oid is recommended.

並列關鍵字

seed germination test ； temperature ； light intensity ； medium ； rosette ； plug system