首页> 中文期刊> 《西北植物学报》 >不同温度对独蒜兰开花和生长的影响

不同温度对独蒜兰开花和生长的影响

         

摘要

The experiment was carried out under artificial greenhouse condition to investigate the effects of grow th and pseudobulb’s organic matter content of Pleione bulbocodioides with three temperature treat‐ments(20 ℃/15 ℃ ,15 ℃ /10 ℃ and 10 ℃/5 ℃) .The results showed that :(1) compared with 20 ℃/15℃ treatment (simulate the natural temperature of the native place during the flowering period ) ,the early flowering time with 15 ℃/10 ℃ and 10 ℃/5 ℃ treatments were advanced 24 days and 53 days respective‐ly ,while the flowering was prolonged 4 days and 6 days respectively .(2) With 10 ℃/5 ℃ treatment ,the color of flower was deeper than that of other treatments ,while many dumb flower buds were exist .(3) With the process of the old pseudobulb growth ,the starch content showed a trend of increase under 20 ℃/15 ℃ treatment ,and fall after rise under 15 ℃ /10 ℃ and 10 ℃/5 ℃ treatments ;Under the three tempera‐ture treatments ,the maximum of soluble sugar content all appeared in flowering period ;Both the soluble sugar and soluble protein were maintained high level under 10 ℃/5 ℃ treatment .Studies had shown that both 20 ℃/15 ℃ and 15 ℃/10 ℃ treatments were favorable to the growth and flowering of P .bulboco‐dioides ,while 10 ℃ /5 ℃ treatment not .The dormant pseudobulb of P .bulbocodioides doesn't need low temperature induction break dormancy and would start the corresponding growth process when tempera‐ture rises .%该研究采用人工温室于3种培养温度(20℃/15℃、15℃/10℃、10℃/5℃)条件下,分析独蒜兰生长开花进程以及假鳞茎中有机物质含量的动态变化。结果表明:(1)于20℃/15℃(模拟原生地开花期自然温度)处理下,独蒜兰进入初花期的时间比15℃/10℃、10℃/5℃处理下分别提前24 d和53 d ,花期分别延长了4 d和6 d。(2)独蒜兰的花色以10℃/5℃处理较深,但该处理中有哑蕾出现。(3)老假鳞茎生长开花过程中,20℃/15℃处理的淀粉含量呈升高趋势,15℃/10℃和10℃/5℃处理先升高后降低;3种温度处理下,可溶性糖均在花期含量最高,且10℃/5℃处理下可溶性糖含量、可溶性蛋白含量均保持较高水平。研究认为,20℃/15℃和15℃/10℃培养温度均有利于独蒜兰的生长和开花;独蒜兰休眠的假鳞茎不需要经过低温诱导解除休眠,随着温度上升,相应的生长发育进程就会启动。

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