西南林业大学学报2025，Vol.45Issue(1)：10-17,8.DOI:10.11929/j.swfu.202209036
不同光质对3种松树种子萌发及幼苗生长与HY5基因表达的影响
Effects of Different Lights on Seed Germination,Seedling Growth and HY5 Gene Expression of 3 Pine Species
摘要
Abstract
The main afforestation trees for barren mountains at different altitudes in Yunnan,namely Pinus kesiya var.Langbianensis,Pinus yunnanensis and Pinus densata,were selected as the objects of this study.The relevant parameters of seed germination,seedling growth and biomass accumulation were determined by using RL,BL and WL(CK)as the light sources.Furthermore,the relationship between hypocotyl elongation and HY5 expression was analyzed.The results showed that RL can promote the seed germination and seedling growth of 3 pine trees,which increased by 23.70%and 14.02%for P.kesiya var.langbianensis,11%and 11.61%for P.yun-nanensis,9.37%and 11.35%for P.densata,respectively.However,the chlorophyll content of needles in three pine seedlings(P.kesiya,P.yunnanensis and P.densata decreased by 15.30%and 8.78%,respectively)was re-duced under the RL,and RL had no significant effects on biomass accumulation.The chlorophyll content and bio-mass accumulation of three pine seedlings were increased under BL,which increased by 3.27%,11.72%and 2.28%in P.kesiya var.langbianensis,P.yunnanensis and P.densata,respectively.On the other hand,it inhibited the seed germination and seedling growth of P.yunnanensis and P.densata,but promoted the growth of P.kesiya var.langbianensis.The hypocotyl elongation was negatively correlated with HY5 expression in three pine seed-lings under RL and BL light.The seed germination and seedling growth of P.kesiya var.langbianensis showed RL＞BL＞WL under different light quality,while that of P.yunnanensisand P.densatashowed RL＞WL＞BL.关键词
思茅松/云南松/高山松/红蓝光/种子萌发/幼苗生长/HY5Key words
Pinus kesiya/Pinus yunnanensis/Pinus densata/red and blue light/seed germination/seedling growth/HY5分类
园艺学与植物营养学引用本文复制引用
朱梅彩,刘子腾,甘沛华,李培玲,纵丹,何承忠..不同光质对3种松树种子萌发及幼苗生长与HY5基因表达的影响[J].西南林业大学学报,2025,45(1):10-17,8.基金项目
云南省应用基础研究计划重点项目(2017FA011)资助 （2017FA011）
中央引导地方科技发展专项资金项目(YDZX201953000002845)资助 （YDZX201953000002845）
云南省专家工作站建设项目(202005AF150020)资助. （202005AF150020）
