Influence of air humidity and lighting period on growth, vase life and water relations of 14 rose cultivars
Influence of air humidity and lighting period on growth, vase life and water relations of 14 rose cultivars
复制标题
空气湿度和光照时间对14个月季品种生长、瓶插寿命及水分关系的影响
DOI：
10.1016/s0304-4238(99)00062-x
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发表时间：
1999
影响因子：
4.3
通讯作者：
H. Gislerød
中科院分区：
文献类型：
--
作者：
L. Mortensen;H. Gislerød
以14个月季品种为试材，研究了3种相对湿度（75%RH，390%RH，200Pa）和2种光照时间（18h和24h d-1）对月季生长、瓶插寿命和叶水关系的影响。当空气湿度从83%提高到91%时，空气湿度对开花枝数没有影响，而枝鲜重平均下降11%。增加光照时间（LP）提高了12%的开花枝条的数量和鲜重每枝5%。空气湿度从75%RH上升到91%RH，在18小时LP和24小时LP分别使瓶插寿命减少30%（不同品种的变化范围从12%到75%）和44%（不同品种的变化范围从31%到78%），而LP的增加分别使瓶插寿命在75%RH和91%RH下减少23%和38%。品种之间的反应的幅度差异显着。一般来说，瓶插寿命的减少和离体叶片失水率之间存在密切关系。结果表明，在温室玫瑰生产中，一般应避免高空气湿度和连续光照。
The influence of three relative air humidities (RH) (75, 83 and 91% RH corresponding to vapour pressure deficits of 550, 390 and 200Pa, respectively) and two lighting periods (18 and 24h day−1) on growth, vase life and leaf–water relations was studied in 14 rose cultivars. Air humidity had no effect on the number of flowering shoots while shoot fresh weight decreased by 11% as a mean of all cultivars when RH was raised from 83 to 91%. An increase in the lighting period (LP) enhanced the number of flowering shoots by 12% and fresh weight per shoot by 5%. A rise in air humidity from 75 to 91% RH reduced the vase life by 30% (varying from 12 to 75% in the different cultivars) at 18h LP and by 44% (varying from 31 to 78% in the different cultivars) at 24h LP, while an increase in LP reduced vase life by 23 and 38% at 75 and 91% RH, respectively. The magnitude of the responses differed significantly among cultivars. Generally, a close relationship was found between reduction in vase life and rate of water loss of detached leaves from all cultivars. It is concluded that high air humidity and continuous lighting in general should be avoided in the production of greenhouse roses.