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研究生:張元聰
研究生(外文):Chang
論文名稱:聖誕紅盆花以搖動處理和栽培床型式控制高度之研究
論文名稱(外文):Effects of shaking and bench-type on plant height in pot poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch )
指導教授:王才義
指導教授(外文):Tsai-Yih Wang
學位類別:碩士
校院名稱:國立中興大學
系所名稱:園藝學系
學門:農業科學學門
學類:園藝學類
論文種類:學術論文
論文出版年:1995
畢業學年度:83
語文別:中文
論文頁數:104
中文關鍵詞:聖誕紅高度控制搖動處理栽培床型式
外文關鍵詞:PoinsettiaHeight controlShakingBench-type
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本研究採用''Peter Star'',''V-14''及''Supjibi''三個聖誕紅品種,利用搖動
機械每分鐘180次,搖幅10公分處理每天一次或兩次,每次4分鐘,以及不
同栽培床型式等處理以期控制植株高度。三個品種皆以搖動處理或益收處
理之株高較對照組矮化2-30﹪,且具明顯差異,但搖動處理一次與兩次的
效果沒有差別。搖動處理抑制生長除了縮短節間長外,尚有減少節數的效
果,益收處理則只是單純減少節間長。搖動處理也會使側枝數目減少。搖
動處理有矮化的效果主要是乙烯的作用所致,分析植體內乙烯量的結果顯
示,搖動處理後4小時所產生的乙烯量是對照組的10倍,而益收處理
為100 -150倍。在枝條強度的改善方面,益收處理比對照組更容易在主、
側枝分叉處折斷,搖動處理則顯然可以改善這種情形。益收和搖動處理每
天兩次會使花芽形成期提前,但對到達盛花所需天數沒有影響。不論益收
或搖動處理皆會減少花序直徑。比較鏤空植床和封閉植床床面對株高的影
響,其最終株高並沒有差別,對聖誕紅盆花品質也沒有很大的影響。但以
鏤空植床或封閉植床黑色床面處理者明顯減少根乾重約 3-4公克。本試驗
中,栽培床型式影響聖誕紅植株形態的主效因子在於床面反射光的光量和
光質的差別。但在試驗後期因植株生長而遮蓋床面,使反射光的效果消失
,加上盆花彼此的高度競爭而使最終高度並無差別。
Euphorbia pulcherrima Willd. ex Klotzsch ''Peter Star'',''V-14''
and ''Supjibi''were used in this study.The objective is to
investigate controlling the height of poinsettias by shaking
180 times per minute with stroke length of 10 cm for 4 minutes
once or twice daily, and by bench cultural systems.The plant
height of three cultivars was significantly reduced by2-30﹪if
it was cultivated under shaking and ethephon treatments.But it
is not significantly different between that of shaking once and
twice. Under shaking, it is not only reduced internode length
but also the number of nodes.Ethephon treatment only could
decrease internode length but shaking could reduce the number
of branches.The reason for the dwarfing effect by shaking is
ethylene,since the ethylene evolution of plants shaken after 4
h ours is 10 times and that of ethephon treated plants is
100-150 times to control. The stem strength of plants were
reduced with treatment of ethephon, but shaking can improved
stem strength significantly than control. Appling ethephon and
shaking twice daily could reduce the days to flower bud forming
but had no effect on anthesis. Ethephon and shaking treatments
can reduced the inflorescence diameter. Compared the effects of
open cultural type, closed cultural type of black or clear
surface color benches on the height of poinsettias. It made no
significantly difference one another and no influence on the
quality of flowers. But root dry weight was reduced
approximately 3-4g in open cultural type and closed cultural
type of black surface color benches.The main effect of bench
type which influencing plant morpho-genesis of poinsettias is
reflected light rate and light quality of direct sunlight from
bench surface in this study. But the effect disappeared as the
results of leaves covered the bench surface and the growth
competition.
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