LI Shuaifei,KANG Xin,WANG Qiang,et al.Effects of Photoperiod Treatment on Secondary Flower Bud Differentiation and Physiological and Biochemical Indexes of Hemerocallis[J].Northern Horticulture,2023,(17):69-77.[doi:10.11937/bfyy.20220409]
光周期处理对萱草二次花芽分化及生理生化指标的影响
- Title:
- Effects of Photoperiod Treatment on Secondary Flower Bud Differentiation and Physiological and Biochemical Indexes of Hemerocallis
- 文章编号:
- 1001-0009(2023)17-0069-09
- 分类号:
- S 682.1+9
- 文献标志码:
- A
- 摘要:
- 以二次开花萱草“黎城6号”为试材，采用人工遮光的方法，设置了自然光CK（14 h/10 h）、Ph12（12 h/12 h）、Ph10（10 h/14 h）、Ph8（8 h/16 h）4个光周期，研究光周期对萱草“黎城6号”二次花芽分化的影响，以期阐明光周期对萱草“黎城6号”花芽分化进程的调控，为萱草花期调控以及萱草品种培育提供参考依据。结果表明：自然光周期条件下，萱草“黎城6号”正常进入生殖生长，Ph12较CK晚15 d，Ph10和Ph8较CK晚30 d，且3个处理组均没有完成整个花芽分化进程；CK正常开花，而Ph12抽葶3个但未开花，Ph10抽葶6个未开花，Ph8抽葶3个未开花，表明缩短光周期影响了萱草“黎城6号”的二次花芽分化及开花；在光周期处理下，3个处理叶片和根部的可溶性糖含量比CK低而淀粉含量比CK高，表明缩短光周期通过影响可溶性糖和淀粉含量，延缓了花芽分化进程。
- Abstract:
- The secondary flowering Hemerocallis fulva ‘Licheng 6’ were used as the material，the method of artificial shading，four photoperiods of natural light CK (14 hours/10 hours)，Ph12(12 hours/12 hours)，Ph10(10 hours/14 hours)，and Ph8(8 hours/16 hours) were set up，the effect of photoperiod on the secondary flower bud differentiation of Hemerocallis fulva ‘Licheng 6’ were studied，with a view to elucidating the regulation of the flower bud differentiation process of Hemerocallis fulva ‘Licheng 6’，to provide a better solution for the Hemerocallis fulva flower differentiation,and in order to provide references for the Hemerocallis fulva floral regulation and daylily species cultivation.The results showed that under the natural photoperiod condition，Hemerocallis fulva ‘Licheng 6’ entered into reproductive growth normally，Ph12 was 15 days later than CK，and Ph10 and Ph8 were 30 days later than CK，and none of the three treatment groups completed the whole process of floral bud differentiation;CK bloomed normally，and Ph12 had 3 scapes but no bloom，Ph10 had 6 scapes but no bloom，and Ph10 had 6 scapes but no bloom.CK bloomed normally，while Ph12 scaped 3 but did not bloom，Ph10 scaped 6 but did not bloom，and Ph8 scaped 3 but did not bloom，indicated that shortening the photoperiod affected the secondary bud differentiation and blooming of Hemerocallis fulva ‘Licheng 6’;under the photoperiod treatment，the soluble sugar content of leaves and roots of the three treatment groups was lower than that of CK，while the starch content was higher than that of CK，indicating that the shortening of the photoperiod delayed the flowering and starch content of Hemerocallis fulva ‘Licheng 6’ through affecting soluble sugar and starch and starch content，indicated that shortening the photoperiod slowed down the process of flower bud differentiation by affecting the soluble sugar and starch content.
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备注/Memo
第一作者简介：李帅菲（1998-），女，硕士研究生，研究方向为植物遗传育种。E-mail：lishuaifei183@163.com.责任作者：曹冬梅（1971-），女，博士，研究员，现主要从事观赏植物种质资源利用等研究工作。E-mail：caodm787@163.com.基金项目：山西农业大学农业科技创新资助项目（YGC20203）；国家自然科学基金青年基金资助项目（3200181191）；国家重点研发计划子课题资助项目（2021YFD1600301-9）；山西省农作物种质资源保护资助项目（ZYBH-202206）。收稿日期：2023-04-08