Growth and Developmental Responses of Phalaenopsis spp. Seedlings as Influenced by Orchid Mycorrhizal Fungi, Chemicals and LED treatments for Transport

• Main Authors: Pei-Lu Lu, 呂佩陸
• Other Authors: Chi-Ning Chang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/31013836063837889131

碩士 === 臺灣大學 === 園藝學研究所 === 96 === The order to improve the effects of the inoculation of orchid mycorrhizal fungi (OMF), plant growth substances (PGS) and LED on the growth and flowering of Phalaenopsis spp. for bare-rooted and potted transportations for 2 days to 4 weeks. Bare-rooted transportations (15 ℃, 2 days): Results showed that application with Lysine#3 0.5 mg/L at the seedling stage of Phalaenopsis Sogo Yukidian ×P. Taisuco koaladian and Doritaenopsis Plum Rose × Fushnin Wine increased the SPAD value most effectively 3 months after bare-root transportation.Dtps. Taida Hakast ×P. Hakalau Queen ’Hawaii’ applied with Happy-Gro 1000 X before bare-root simulated transportation had longer leaf length than all the other treatments 3 months after transportation. During bare-root simulated transportation, LED enhanced plant recovery of Dtps. Plum Rose × Fushnin Wine and Dtps. Taida Firebird ×P. Hakala‘Firebird’. Also application with Lysine#24 or Happy-Gro increased spiking rate and decreased abortion rate of the above two species. This result is more remarkable with the presence of LED during transportation. Potted transportations (20 ℃, 1 to 4 weeks): Inoculation with R02 and R19 increased leaf length after potted-transportation while inoculation with R15 and R19 clearly increased leaf span of Phal. spp.. As the transportation period extended, delayed the growth of leaf length, leaf width and leaf span and high rate of leaf drop. Plants with LED during simulated transportation grew better and had higher CMR than those transported without adding LED. Inoculation of R15 increased flowering number of Dtps. Taida Hakast ×P. Hakalau Queen ’Hawaii’ or Dtps. Taida Firebird ×P. Hakala‘Firebird’. Inoculated with R02, R15 and R19 together with LED during simulated transportation increased the spiking rate of orchid, and decreased the abortion of flowering buds. Applying BA or Happy-Gro 2 weeks before simulated transportation, also with LED resulted in the spiking rate of Phalaenopsis Sogo Yukidian ×P. Taisuco koaladian to 100 %, while control plants had only 83.3 % of spiking rate. But, the spiking rate would decrease when the the transportation period pronged. In summary, orchid plants inoculated with R02, R15 or R19, aqlis transplamting for exvitro growth, and applied with Happy-Gro before transport, also put a LED on the top of box during simulated transportation would help Phalaenopsis spp. to recover for growth and for better flowering quality after transportation, regardless of bare-rooted or potted transportation. During the transportation of Phalaenopsis Sogo Yukidian‘V3’ and Phalaenopsis Tai Lin Redangel‘V31’, result showed that the decrease of chlorophyll content, the yellowing of basal leaf and leaf drop became worse as the transportation days prolonged. Applying Happy-Gro before transportation, could decease the yellowing of basal leaf for both cultivars V3 and V31. V3 inoculated with R02 showed no obvious symptom of yellowing on basal leaf, no matter the transportation days. While V31 inoculated with R02 after 4 weeks of transportation showed severe yellowing of basal leaf. This result indicated that different Phalaenopsis cultivars showed up different responses toward the inoculation of OMF.