摘要
【目的】彩叶芋是一种天南星科观叶植物,其叶片色彩丰富、斑纹多样,被广泛用于室内外观赏,具有较好的经济价值。彩叶芋常在无补光措施的大棚中栽培,其成苗质量和效率受限于天气情况,难以保障商品苗的生产效率和标准化。光照是彩叶芋生长和色素积累的重要因子,该研究旨在探索适合彩叶芋组培苗的光质类型,为提高彩叶芋生产效率和商品苗质量提供理论参考。【方法】以白色荧光灯为对照,采用LED白光、LED红光、LED蓝光、LED红蓝白1︰1︰1、LED红蓝绿1︰1︰1、LED红蓝白绿1︰1︰1︰1等7种不同光质类型处理彩叶芋组培再生植株,测定不同光质处理后彩叶芋的叶片大小、叶片厚度、株高、根数及色素含量等相关生长指标,评价筛选能够提高彩叶芋商品苗质量的有效光质。【结果】与荧光灯相比,LED红光处理不利于彩叶芋叶片数量、叶柄粗的增加,分别为5.3片和3.42 mm;不利于总叶绿素含量和叶面相对花青素含量积累,分别为2.0 mg/g和1.0 U/g;不利于PSⅡ最大光化学效率Fv/Fm和实际光量子产量Y(Ⅱ),仅为0.64和0.60。LED蓝光处理有利于彩叶芋植株增高、叶柄粗及叶柄相对花青素含量的积累,分别为21 cm、4.6 mm和6.1 U/g,但不利于彩叶芋根系数量的增加。对组合光而言,LED红蓝白绿1︰1︰1︰1处理有利于彩叶芋叶面积的增加、为98.8 cm^(2),该处理下彩叶芋叶面相对花青素含量最高、达到8.23 U/g。LED红蓝绿1︰1︰1处理不利于彩叶芋株高、叶柄粗及叶片厚度的增加,分别为10.6 cm、3.9 mm及0.70 mm。LED红蓝白1︰1︰1、LED红蓝绿1︰1︰1及LED红蓝白绿1︰1︰1︰1处理彩叶芋叶柄的相对花青素含量均显著低于白色荧光灯处理。【结论】不同光质影响彩叶芋再生植株的生长和色素含量的积累,LED蓝光处理在提高彩叶芋株高、叶柄粗及相对花青素含量方面效果最好,LED红蓝白绿1︰1︰1︰1在
【Objective】Caladium bicolor is a foliage plant in the Araceae family,characterized by rich colors and diverse patterns on its leaves,making it widely used for indoor and outdoor ornamental purposes and possessing good economic value.C.bicolor is often cultivated in greenhouses without additional lighting measures,which limits the quality and efficiency of seedling production due to weather conditions,making it difficult to guarantee the production efficiency and standardization of commercial seedlings.Light is an important factor in the growth and pigment accumulation of C.bicolor.The study aims to explore suitable types of light quality for tissue-cultured C.bicolor seedlings,providing a theoretical basis for improving the production efficiency and seedling quality of C.bicolor plants.【Method】We used white fluorescent light as a control and employed 7 different light quality types including LED white light,LED red light,LED blue light,LED red-blue-white 1:1:1,LED red-blue-green 1:1:1 and LED red-blue-white-green 1:1:1:1 light to treat tissue-cultured regenerated plants of C.bicolor.Various growth indicators such as leaf size,leaf thickness,plant height,number of roots,and pigment content of C.bicolor after different light quality treatments were measured to evaluate and select effective light qualities that could enhance the quality of commercial C.bicolor seedlings.【Result】Compared to fluorescent light,LED red light treatment was detrimental to the increase in the number of leaves and the thickness of petioles in C.bicolor,which were 5.3 pieces and 3.42 mm,respectively;it hindered the accumulation of total chlorophyll content and relative anthocyanin content on the leaf surface,which were 2.0 mg/g and 1.0 U/g respectively;and it was also unfavorable for the maximum photochemical efficiency of PSII(Fv/Fm)and the actual quantum yield of photosystem II〔Y(II)〕,with values of only 0.64 and 0.60,respectively.LED blue light treatment promoted the increase in plant height,petiole thickness and accumulat
作者
陈梦仪
谢江江
黄海英
陈双艳
赵锐
官锦燕
张逸飞
CHEN Mengyi;XIE Jiangjiang;HUANG Haiying;CHEN Shuangyan;ZHAO Rui;GUAN Jinyan;ZHANG Yifei(Institute of Nanfan&Seed Industry,Guangdong Academy of Sciences,Guangzhou 510316,China;Zhanjiang Research Center,Institute of Nanfan&Seed Industry,Guangdong Academy of Sciences,Zhanjiang 524300,China;Zhanjiang Research Institute,Guangdong Academy of Sciences,Zhanjiang 524000,China)
出处
《广东农业科学》
CAS
2024年第7期118-128,共11页
Guangdong Agricultural Sciences
基金
广东省科学院建设国内一流研究机构行动专项(2018GDASCX-0926)
广东省科学院分支机构专项
湛江市科技计划项目(2021B01057)。
关键词
观赏植物
光质
彩叶芋
再生植株
形态建成
花青素
ornamental plant
light quality
Caladium bicolor
regenerated plant
morphogenesis
anthocyanin
