Shortage of soluble carbohydrates is largely responsible for short vase life of cut 'Sonia' rose flowers
Shortage of soluble carbohydrates is largely responsible for short vase life of cut 'Sonia' rose flowers
复制标题
DOI：
10.2503/jjshs.72.292
复制
发表时间：
2003-07-01
影响因子：
--
通讯作者：
Yamada, K
中科院分区：
文献类型：
--
作者：
Ichimura, K;Kawabata, Y;Yamada, K
为了明确血管阻塞或可溶性碳水化合物缺乏在多大程度上缩短了切花索尼亚玫瑰（Rosa hybrida L.）的花瓶寿命，对切花进行了200 mg的连续处理。l(-1) 8-羟基喹啉硫酸盐（HQS组），20 g。升(1)蔗糖（苏组）或20克。l（-1）蔗糖加200 mg l HQS （Sue + HQS组），而对照花则保持在水中。所有切花在23℃、70%相对湿度、12小时光周期、10 μ mol / l条件下保存。(2)。(1)辐照度。虽然所有处理都延长了花瓶的寿命，但蔗糖比HQS更有效。蔗糖处理促进了花瓣的展开，抑制了切花鲜重的下降，并比HQS更有效地抑制了蓝化的发生。收获后，对照组和苏处理组茎段水分电导率迅速下降，而HQS和苏+ HQS处理组茎段水分电导率维持在初始水平附近7 d。对照组和苏组茎段细菌数量增加，但这种增加被HQS抑制。Sue和Sue + HQS组花瓣中葡萄糖、果糖和蔗糖的浓度明显高于对照组和HQS组。这些结果表明，在我们的实验条件下，花瓣中可溶性碳水化合物浓度的降低比血管阻塞更重要，这决定了“索尼娅”玫瑰切花的花瓶寿命。
To clarify to what extent vascular occlusion or shortage of soluble carbohydrate shortens vase life of cut 'Sonia' roses (Rosa hybrida L.), cut flowers were continuously treated with 200 mg . liter(-1) 8-hydroxyquinoline sulphate (HQS group), 20 g . liter(-1) sucrose (Sue group) or 20 g . liter(-1) sucrose plus 200 mg - liter' HQS (Sue + HQS group), whereas control flowers were kept in water. All cut flowers were kept at 23 degreesC, 70% RH and 12 hr photoperiod, with 10 mu mol . m(-2) . s(-1) irradiance. Although all treatments extended the vase life, sucrose was more effective than HQS. Treatment with sucrose promoted unfolding of petals, suppressed the decrease in fresh weight of cut flowers, and inhibited the occurrence of blueing more than did HQS. Water conductivity of stem segments in the control and Sue groups decreased rapidly after harvest, but that in the HQS and Sue + HQS groups was maintained near the initial level for seven days. The number of bacteria in the stem segments increased in the control and Sue groups, but this increase was suppressed by HQS. Glucose, fructose and sucrose concentrations in petals in the Sue and Sue + HQS groups were much higher than those in the control or HQS groups. These results show that decrease in the soluble carbohydrate concentration in petals was more important than vascular occlusion in determining the vase life of cut 'Sonia' roses under our experimental conditions.