Effects of Different Temperature Treatments on Flowering and Growth of Pleione bulbocodioides
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    Abstract:

    The experiment was carried out under artificial greenhouse condition to investigate the effects of growth and pseudobulb’s organic matter content of Pleione bulbocodioides with three temperature treatments(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 respectively, 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 temperature 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. bulbocodioides, 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 temperature rises.

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LONG Congying, DENG Huiming, ZHANG Xiaoqiu, LI Yinan, XING Ting, SU Mingjie, CAI Shizhen. Effects of Different Temperature Treatments on Flowering and Growth of Pleione bulbocodioides[J]. Acta Botanica Boreali-Occidentalia Sinica,2016,36(12):2498-2504

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  • Online: January 20,2017
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