東方型百合箱植後抽莖期低溫處理對其生長及切花品質的影響

Influence on the Growth and Cut-flower Quality by Using Precooling in Shooting Emergence Stage of Lilies

黃勝忠(Sheng-Chung Huang) ； 易美秀(Meei-Shiouh Yih)

《臺中區農業改良場特刊》 40號 (1998/08) Pp. 95-104

https://doi.org/10.29563/ZHWHGX.199808.0002

摘要

本試驗參試品種為東方型百合如香水百合（Casa Blanca）、葵百合（Star Gazer）、粉香水（Le Reve）及貴族（Noblesse），於種植後以不同溫度（8、10、12、14˚C），分別處理1~4週的低溫暖處理後，移箱至遮陰網下露天栽培，探討百合抽莖期低溫處理對生長及切花品質的影響。試驗結果顯示，參試四個品種箱植經低溫處理者，其株高與對照者比較有顯著的增高，而且有隨處理溫度之增加而增高株高的趨勢，但12與14˚C處理間差異不顯著。株高的增加是由於節間伸長、而非節數之增加。所有品種經低溫處理後其花莖徑大於對照者，且每株總葉面積與平均單葉面積顯著的高於對照組，但切花期比對照延遲1~2週。綜合其生育及園藝性狀之調查結果，建議百合種球種植後於莖期以12~14˚C處理二週，有助於提高東方型百合之切花品質。

並列摘要

In order to promote the cut-flower quality of lilies, the bulbs of Oriental hybrid were grown in cultivation boxes to receive precooling in shooting emergence stages for cut-flower forcing. Four Oriental hybrid lilies (Casa Blanca, Star Gazer, Noblesse, and Le Reve) were used in this experiment of forcing cultivation. The constant temperatures in 8, 10, 12, and 14˚C in day and night were adopted while the bulbs were cultivated in peat moss medium keeping high moisture in cultivation boxes. The bulbs were grown in growth cambers in a dark condition and treated with 1, 2, 3, and 4 weeks of forcing period, respectively. The result indicated that plant height has an increasing tendency to increase the precooling temperature from 8 to 14˚C, but no significant difference was found between 12 and 14˚C. The increase in plant height was due to elongation of internodes but not increase in the number of nodes. The leaf area and the diameter of stem also increased by forcing treatment. For instance, the leaf area of Star Gazer reached the highest in the forcing 10˚C for 2~3 weeks, and Casa Blanca obtained the highest leaf area in the treatment of 12˚C for 2 weeks as well. Even though the growth stage of lily treated with precooling was longer then that of nontreatment, generally, it is suggested that the cut flower quality of Oriental lilies could be promoted by use of precooling in shooting emergence stages in 10 or 12˚C for two weeks.