Improvement of Eustoma grandiflorum (Raf.) Shinn. Cut Flower Quality for Early-Autumn Shipping with Long-Day Treatment Using Light Sources That Delay Flower Bud Formation
Improvement of Eustoma grandiflorum (Raf.) Shinn. Cut Flower Quality for Early-Autumn Shipping with Long-Day Treatment Using Light Sources That Delay Flower Bud Formation
复制标题
洋桔梗 (Eustoma grandiflorum (Raf.) Shinn) 的改良。
DOI：
10.2503/jjshs1.77.296
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发表时间：
2008
影响因子：
--
通讯作者：
T. Kunitake
中科院分区：
文献类型：
--
作者：
Asuka Yamada;T. Tanigawa;Takuro Suyama;Takatoshi Matsuno;T. Kunitake
桔梗（英文）希恩。采用高红光（R; 660±30 nm）与远红光（FR; 730±30 nm）光比的四种光源进行长时间处理，以提高早秋运输的切花品质。红光荧光灯、彩色荧光灯（R型）、球泡式红光荧光灯和球泡式日光荧光灯的R:FR比值分别为62.0、100.0、8.8和8.5。作为对照，植物在日光下生长。7月11日栽植的‘重粉’幼苗，在4种光源下，从栽植到出芽均进行夜间处理，其开花时间较对照延迟2 ~ 5天。与对照相比，各光源夜间处理均增加了植株主茎节数、侧枝数和花蕾数，增加了植株第1小花花期切花长度。采用彩色荧光灯（r型）和球泡型红光荧光灯对3个品种进行夜休处理。虽然这两种光源对‘雪王’的开花时间没有延迟，但两种光源下‘重粉’和‘小雪’的平均开花时间比对照晚了3 ~ 6天。与对照相比，这些光源增加了各品种主茎的节数，增加了茎长和切花长。作为最实际的应用，我们采用球泡式红光荧光灯对‘双粉’进行了长时间的处理，分为4个照明时段：黎明前照明6小时、黄昏照明6小时、通宵照明6小时、夜间休息6小时。夜间光照比其他处理更延迟开花时间。在黎明前光照处理下，植株第1小花开花期切花长度最长。结果表明，在种植后0:00 ~ 6:00进行球茎型红光日光灯长时间处理，直至开花为止，可有效提高早秋运输品种切花品质。
Eustoma grandiflorum (Raf.) Shinn. was subjected to long-day treatment using four types of light sources with a high red (R; 660 ± 30 nm) to far-red (FR; 730 ± 30 nm) light ratio to improve cut flower quality for early-autumn shipping. The R:FR ratios of a red-light fluorescent lamp, a color fluorescent lamp (R-type), a bulb-type red-light fluorescent lamp, and a bulb-type daylight fluorescent lamp were 62.0, 100.0, 8.8, and 8.5, respectively. As a control, plants were grown under ambient daylight. Flower budding of ‘Double Pink’ seedlings, planted on July 11 and treated with night-break treatment from planting to budding using these four light sources, was delayed 2–5 days compared with the control. Night-break treatment using each light source increased the number of nodes on the main stem, number of lateral branches, and number of flower buds, and increased the cut flower length of plants at anthesis of the first floret, compared with the control. Three cultivars were treated with night break using a color fluorescent lamp (R-type) and a bulb-type red-light fluorescent lamp. Although these two light sources did not delay the flowering of ‘King of Snow’ compared with the control, the mean flowering date of ‘Double Pink’ and ‘Piccolosa Snow’ under both light sources was 3–6 days later than that of the control. These light sources increased the number of nodes of the main stem, and increased the stem length and cut flower length compared with the control in each cultivar. As the most practical application, the bulb-type red-light fluorescent lamp was used for long-day treatment of ‘Double Pink’ under four lighting periods: pre-dawn lighting for 6 h, end-of-day lighting for 6 h, all-night lighting, and night break for 6 h during the night. All-night lighting delayed flowering more than the other treatments. Cut flower length of the plants at anthesis of the first floret was longest in the pre-dawn lighting treatment. We concluded that long-day treatment using a bulb-type red-light fluorescent lamp from 0:00 to 6:00 just after planting until flower budding is most effective to improve cut flower quality for early-autumn shipping of Eustoma cultivars.
影响因子：
7.4
作者：
Lin, CT
通讯作者：
Lin, CT