Effects of Duration and Temperature in Simulated Dark Shipping on the Subsequent Performance of the Nobile-type Dendrobiums

Abstract

<jats:p>The popularity of the nobile-type dendrobium (<jats:italic>Dendrobium nobile</jats:italic> hybrids) has been increasing globally. More information regarding the effects of long-distance shipping, from producing countries to destination market countries, on the post-shipping plant performance is needed. In this study, two nobile-type dendrobium cultivars were subjected to simulated dark shipping (SDS) at various temperatures and durations. Changes in net CO<jats:sub>2</jats:sub> uptake rate (Pn), chlorophyll fluorescence, and leaf relative water content after plants had been treated with SDS were investigated. Furthermore, shipped plants were vernalized to investigate the effect of dark shipping on the subsequent flowering quality. Dark shipping for 7 days at 15 °C did not affect the post-shipping photosynthetic performance of <jats:italic>D.</jats:italic> Lan Tarn Beauty. Increasing the shipping duration from 7 to 21 days increased the time required for Pn recovery from 1 to 12 days. <jats:italic>Dendrobium</jats:italic> Lan Tarn Beauty recovered its Pn within 4 days when shipped for 21 days at 10 °C, and this was prolonged to 11 days when the plants were shipped at 20 °C. Changes in Fv/Fm indicated that there was no marked damage to either cultivars, and the leaf relative water content was little affected by SDS. <jats:italic>Dendrobium</jats:italic> Lan Tarn Beauty and <jats:italic>D.</jats:italic> Lucky Girl shipped at 10 °C flowered 5 and 8 days earlier, respectively, compared with unshipped plants. Regardless of the shipping conditions, shipped <jats:italic>D.</jats:italic> Lucky Girl had a lower flower diameter and higher total flower count than unshipped plants. No differences were found in the number of nodes with flowers or the total flower count between shipped and unshipped <jats:italic>D.</jats:italic> Lan Tarn Beauty. Our study suggested that dark shipping for up to 21 days is possible for nobile-type dendrobiums. We recommend shipping temperatures of 10 to 15 °C to reduce the detrimental effects caused by long-term dark shipping.</jats:p>

Effects of Substrate Water Contents on Post-Shipping Performance of Phalaenopsis

“…화분에 심겨진 성묘는 상당한 부피를 차지하기 때문에 선박을 통해 해상으로 수출하는 것이 항공편을 이용하는 것보다 물류 비를 절약할 수 있어 효과적이다 (Hou et al, 2010;Cinantya et al, 2013). 그러나 선박 수송시 미국까지 운송기간이 2-4주이 상 소요되며 이 과정에서 식물체는 광이 없고 수분관리가 되지 않는 등의 스트레스 환경에 놓이게 된다 (Cinantya et al, 2013). Wang(2007)에 따르면 장기간의 암수송은 호접란 식물체 잎의 황화, 탈엽, 연부병 발생 등 묘 손실을 야기시키며 이는 수출 농 가의 경제적 손실로 이어진다.…”