金菠萝组培快繁技术研究
2021-10-03崔小丽李强刘伟清张曼其刘建荣庞生
崔小丽 李强 刘伟清 张曼其 刘建荣 庞生



摘要以金菠萝吸芽或腋芽为外植体,探讨不同消毒方法、不同生长调节剂配比对芽诱导、继代增殖和生根培养的影响。结果表明,用75%酒精消毒30 s,再用0.1% HgCl2浸泡20~25 min效果最好;适宜菠萝吸芽诱导和继代增殖培养的培养基为 MS+6-BA 3.0 mg/L+NAA 0.1 mg/L,增殖系数为3.19,继代增殖周期为25~30 d较为适宜;适宜生根培养基为1/2 MS+NAA 1.5 mg/L,其生根率达到100%。该研究为完善金菠萝组培快繁技术提供依据。
关键词金菠萝;诱导;增殖;快繁
中圖分类号 S688.3 文献标识码 A DOI:10.12008/j.issn.1009-2196.2021.12.014
Tissue Culture and Rapid Propagation Technology for Golden Pineapple
CUI Xiaoli LIQiang LIU Weiqing ZHANG Manqi LIU Jianrong PANG Sheng
(Guangdong Zhanjiang State Farms Research Institute, Zhanjiang, Guangdong, 524000,China)
Abstract Suckers and axillary buds of Golden Pineapple were used as explants for tissue culture . The effects of different sterilization methods and medium components on the induction of shoots , subculture for multiplicaton and rooting culture were studied. The results showed that sterilization with 0.1% HgCl2 for 20-25 min after sterilization with 75% alcohol for 30 s had the best effect on the explants and that the optimal medium for shoot induction and subculture for multiplication is MS+6- BA (3.0 mg·L-1)+NAA (0.1 mg·L-1), which has a multiplication coefficient of 3.19 and a subculture cycle of 25 to 30 days. The optimal medium for rooting is 1/2 MS+NAA (1.5 mg·L-1) with the rooting rate of 100%. This studyprovides some references for improving the fast propagation of Golden Pineapple via tissue culture.
Keywords Golden Pineapple ; induction ; multiplication ; rapid propagation
菠萝( AnanascomosusMerrill)属于凤梨科凤梨属多年生草本植物,被广泛栽培于热带、亚热带地区,现已成为我国华南四大名果之一[1-3]。金菠萝是近年来引进的一个优良的鲜食菠萝品种,其果形端正、果眼较浅且容易去皮、果肉颜色金黄、味道可口,消费者对其青睐有加。该品种具有抗病性强、耐寒、耐旱、果实大小均匀、产量高且稳产、耐运输、耐贮存等特点。该品种早熟性好,仅比巴厘种晚熟1周,且人工催花效果非常好,结果和成熟度一致性好,适合机械化采收,为目前大力发展的优良新品种[4]。传统的菠萝繁殖主要靠各种芽苗(冠芽、裔芽、吸芽和块茎芽)进行无性扦插繁殖,其繁殖系数低[5],速度慢,优良遗传性状不稳定,满足不了生产需要。目前对其他菠萝组培快繁技术研究较多并已应用于生产,而有关金菠萝组培快繁技术的研究报道尚少[4]。为了解决金菠萝种苗需求,本试验对其组培快繁技术进行研究,以获得快速繁殖方法,满足生产需求,降低种植成本,并为保存金菠萝种质资源和今后开发利用奠定基础[6]。……
