Effects of air humidity, lighting period and lamp type on growth and vase life of roses
Effects of air humidity, lighting period and lamp type on growth and vase life of roses
复制标题
空气湿度、光照周期和灯具类型对玫瑰生长和瓶插寿命的影响
DOI：
10.1016/s0304-4238(98)00075-2
复制
发表时间：
1998
影响因子：
4.3
通讯作者：
T. Fjeld
中科院分区：
文献类型：
--
作者：
L. Mortensen;T. Fjeld
玫瑰CV。纪念品在两种空气湿度（65%和90%相对湿度，RH）下生长，结合三个光照周期（16，20和24 h day− 1，光合光子通量为170 μmol m−2s−1），使用高压钠灯（HPS）。此外，在20 h day-1的两种空气湿度下包括荧光灯管。结果发现，提高湿度通常会略微增加芽长，而开花时间在最长光照期略有减少，在两个较短光照期有所增加。开花时间和芽长略有减少，但芽鲜重不受光照时间增加的影响。与HPS光相比，荧光灯使芽短而轻。增加空气湿度使玫瑰的瓶插寿命从8-13天减少到2-5天，而在65%RH下将光照时间从16小时增加到24小时，使瓶插寿命从13天减少到8天。瓶插寿命的缩短是由于瓶颈弯曲和叶片干燥的早期发展造成的。叶片扩散阻力的测量结果表明，气孔没有关闭在黑暗期间，玫瑰生长在高空气湿度，这是特别是在光照时间为20小时天-1。在65%RH下生长的新梢离体叶片的失水曲线在不同光照时间之间略有差异。在90%RH条件下生长的新梢叶片的失重率远大于65%RH条件下生长的新梢叶片的失重率，且随光照时间的延长而增加。
The rose cv. Souvenir was grown at two air humidities (65% and 90% relative humidity, RH) combined with three lighting periods (16, 20 and 24 h day−1at a photosynthetic photon flux of 170 μmol m−2s−1) using high-pressure sodium lamps (HPS). In addition, fluorescent tubes were included at the two air humidities at 20 h day−1. It was found that raising the humidity generally slightly increased the shoot length, while time until flowering was slightly reduced at the longest lighting period and increased at the two shorter lighting periods. Time until flowering and shoot length were slightly reduced but shoot fresh weight was unaffected by an increase in the lighting period. Fluorescent light gave shorter and lighter shoots as compared with HPS light. Increasing the air humidity reduced the vase life of the roses from 8–13 to 2–5 days, while increasing the lighting period from 16 to 24 h day−1at 65% RH reduced the vase life from 13 to 8 days. Shortening of vase life was caused by the early development of bent necks and leaf drying. Measurements of leaf diffusion resistance showed that the stomata did not close during the dark period when the roses were grown at high air humidity, and this was particularly the case when grown under a lighting period of 20 h day−1. The water-loss curves of detached leaves from shoots grown at 65% RH showed slight differences between the different lighting periods. The rate of weight loss of leaves from shoots grown at 90% RH was much greater than that at 65% RH, and increased with increasing lighting period.