红光与远红光比值对温室切花菊花‘神马’花芽分化进程的影响  

Effects of red and far-red light ratio on the flower bud differentiation of greenhouse cut chrysanthemum cultivar ‘Jingba’

作　　者：彭晓丹[1] 杨再强[1,2] 李伶俐[1] 张继波[1] 

机构地区：[1]南京信息工程大学江苏省农业气象重点实验室,南京210044 [2]南京信息工程大学应用气象学院,南京210044

出　　处：《生态学杂志》2013年第6期1471-1475,共5页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(41075087);公益(气象)行业科研专项(GYHY200906023);公益(气象)行业科研专项(GYHY201006028);江苏省科技支撑项目(社会发展)(BE2010734)资助

摘　　要：以切花菊品种‘神马’(Chrysanthemum morifoliumcv.‘Jingba’)为试材,设计红光(R:660±10nm)与远红光(FR:730±10nm)比值(R/FR)为0.5、2.5、4.5、6.5的LED照光处理,研究不同R/FR处理对菊花花芽分化进程、相对发育速率及花径的影响。结果表明:R/FR=6.5处理的菊花完成花芽分化进程所需时间最短,比R/FR=0.5处理下的菊花缩短了34d。R/FR越大,菊花花芽分化的相对发育速率越大,完成花芽分化时,R/FR=6.5相对发育速率为R/FR=0.5的2倍。与花芽分化趋势一致,不同光质处理下的花径由大到小的R/FR顺序为:6.5>4.5>2.5>0.5。本研究表明,R/FR=6.5能够显著促进菊花花芽分化进程和花径的生长。An experiment with LED light source irradiation of 4 ratios （0.5, 2.5, 4.5, and 6.5） of red light （R： 660＋10 nm） to far-red light （FR： 730＋10 nm） was conducted to study the effects of red/far red light ratio （R/FR） on the flower bud differentiation, relative growth rate, and inflorescence diameter of Chrysanthemum morifolium cv. ＇Jingba＇ In treatment R/FR = 6.5, the duration needed by the ＇Jingba＇ to complete its flower bud differentiation was the shortest, being shortened by 34 days as compared to treatment R/FR = 0.5. The larger the R/FR, the higher the relative growth rate for the flower bud differentiation would be. When the flower bud differentiation completed, the relative growth rate in treatment R/FR = 6.5 was as twice as that in treatment R/FR = 0.5. Similar to the flower bud differentiation, the dimension of inflorescence diameter was in the order of treatment R/FR 6.5 〉 R/FR 4. 5 〉 R/FR 2.5 〉 R/FR 0.5. This study indicated that the R/FR ratio of 6.5 could promote the chrysanthemum flower bud differentiation and the inflorescence diameter growth significantly.

关 键 词：切花菊 R FR 花芽分化 相对发育速率 花径 

分 类 号：S682.11[农业科学—观赏园艺] S629[农业科学—园艺学]