摘要
【目的】探究不同光质补光处理对杨梅花芽分化和开花进程的影响。【方法】在相同设施条件下,采用色温3329 K的LED白光灯和色温1531 K的LED红光灯对杨梅树进行补光处理,测定树体周围光照度、叶片叶绿素含量、花芽数量和大小,通过形态和解剖观察花芽的萌发及发育状态,以明确不同光质补光处理对杨梅花芽生长的影响。【结果】2种光质补光处理均显著改善树体周围光环境,其中白光处理显著提高树体周围光照度。红光处理下杨梅分化形成的花芽数目最多,同期花芽最大、发育最快,利于提前花期;白光处理也在一定程度上促进花芽生长发育,但花芽数目、花芽纵横径以及花芽发育状态都弱于红光处理;对照组的花芽数量最少,萌发最晚。表明2种不同光质的补光处理均有利于花芽发育,其中较高比例红光的促进效果最为明显。【结论】对设施栽培杨梅树进行补光处理,可显著增加花芽数目,提高花芽纵横径,促进提早开花。其中红光处理促进作用优于白光处理。该研究结果对杨梅设施栽培具有指导作用。
【Objective】The process of flower bud differentiation and development determines the flowering period and yield of fruit trees,which has great influence on production.Bayberry(Myrica rubra)is native to China and has important economic value in China.However,it takes a long time from the beginning of floral differentiation to blossom in bayberry.Therefore,it is very important to study the growth and development process of bayberry flower bud.It has been widely reported that light regulates flower bud differentiation and development in plants.The aim of this work was to study the effects of light intensity and light quality on the flower bud differentiation and budbreak processes in bayberry.【Methods】The two different LED lamps were installed at the top and between two trees in the same row under greenhouse cultivation,in order to compare the difference in their effects on bayberry flower bud development.The spectra of two LED lamps and the greenhouse light intensity were measured to analyze the difference of light intensity and light quality between the two light supplement treatments,the white-light(WL)treatment and red-light(RL)treatment.The differences in color temperature,photosynthetically active radiation(PAR)and wavelength composition of the two light sources can be displayed by optical analysis.The two treatments had similar peak wavelengths.However,the WL had the highest PAR,and increased the light intensity around the tree mostly.The RL has weaker green light with increased ratio of red to far-red light than WL,so there is a significant difference in color temperature between the two treatments,WL being 3329 K and RL 1531K.In addition,the size and numbers of bayberry flower buds under different treatments were observed and analyzed at the same time.Also,the development degree of bayberry flower buds was studied through morphological and anatomical observations.【Results】In this study,the number of flower buds was significantly increased under the two light supplement treatments.RL had more flow
作者
孙鹂
张淑文
郑锡良
俞浙萍
任海英
梁森苗
戚行江
SUN Li;ZHANG Shuwen;ZHENG Xiliang;YU Zheping;REN Haiying;LIANG Senmiao;QIXingjiang(Institute of Horticultural,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang,China;Xianghu Lab,Hangzhou 311231,Zhejiang,China)
出处
《果树学报》
CAS
CSCD
北大核心
2023年第3期527-535,共9页
Journal of Fruit Science
基金
浙江省三农九方科技协作计划(2022SNJF031)
浙江省农科院科研人才启动项目
浙江省重点研发计划(2021C02009)
浙江省农业(果品)新品种选育重大科技专项(2021C02066-2)
温州市环大罗山省级现代农业园区科技支撑项目(WZDLS2021)
黄岩农业绿色发展先行先试项目(HY202002)。
关键词
杨梅
不同光质
补光
花芽发育
Myrica rubra
Different light quality
Light supplement
Flower bud development
