CHEN Xiaoyi,YANG Qianye,ZHAO Qi.Effect of Different Photoperiod on the Growth andStarch Accumulation of Duckweed[J].Northern Horticulture,2017,41(22):50-54.[doi:10.11937/bfyy.20171398]
不同光周期对浮萍生长及淀粉积累的影响
- Title:
- Effect of Different Photoperiod on the Growth andStarch Accumulation of Duckweed
- Keywords:
- duckweed; starch; biomass; photoperiod
- 文献标志码:
- A
- 摘要:
- 以新型能源植物浮萍为试材,采用4种不同光周期处理:12 h光期+12 h暗期(L12/D12);16 h光期+8 h暗期(L16/D8);20 h光期+4 h暗期(L20/D4);24 h光期+0 h暗期(L24/D0),研究了不同光周期对浮萍生长及淀粉积累的影响。结果表明:延长光照时间可以加快浮萍干物质的积累,以上4个处理其生物量分别为2.93、3.32、3.70、4.39 g;也可促进浮萍淀粉的积累,淀粉含量分别为7.00%、8.64%、14.25%和19.75%。此外,不同光周期会影响叶绿素含量及净光合速率;淀粉代谢关键酶ADPG焦磷酸化酶(AGPase)、可溶性淀粉合成酶(SSS)、α和β淀粉酶(α,β-amylase)的活性均发生变化。综合以上结果得出,在全光照(L24/D0)条件下浮萍干物质和淀粉积累效果最佳。
- Abstract:
- New energy plant duckweed was used as material,the effects of four different photoperiod treatments on the growth and starch accumulation of duckweed were studied.Four different photoperiod conditions were 12 h light+12 h darkness(L12/D12);16 h light+8 h darkness(L16/D8);20 h light+4 h darkness (L20/D4);24 h light+0 h darkness (L24/D0).The results showed that extending photoperiod could accelerate biomass yield of duckweed,the biomass was 2.93,3.32,3.70,4.39 g,respectively;and increasing the starch accumulation of duckweed,the starch percentage was 7.00%,8.64%,14.25% and 19.75%,respectively.Moreover,different photoperiod could affect chlorophyll content and net photosynthetic rate;the activities of key enzymes AGPase,SSS,α and β-amylase,which involved in starch metabolism were also changed.Based on above analysis,the best optimal photoperiods for biomass and starch accumulation of duckweed was full light L24/D0.
参考文献/References:
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备注/Memo
第一作者简介:陈晓仪(1990-),女,四川眉山人,硕士研究生,研究方向为药用植物天然产物及食品加工与安全。E-mail:xiaoyichen.cdu@foxmail.com.