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兔眼蓝莓‘提夫蓝’组培快繁

Tissue Culture and Rapid Propagation of Vaccinium ashei ‘Tifblue’

  • 摘要: 以兔眼蓝莓‘提夫蓝’的幼嫩枝条为试材,采用不同浓度和种类的药剂、培养基及生长素进行组培的方法,研究了杀菌剂、培养基、生长激素对外植体灭菌、丛生芽诱发、组培苗继代繁殖、组培苗生根和组培苗移植的影响,以期为构建全面、高效的蓝莓快繁系统提供参考依据。结果表明:外植体最佳灭菌方法为10%NaClO溶液消毒15 min,污染量减少至17.34%,萌芽数为9.71个;蓝莓茎段中诱发形成丛生芽的最适宜培养基为1/2WPM+1.5 mg·L-1ZT+0.2 mg·L-1IBA,诱发成功率为68.36%;组培苗最适宜继代生长培养基为1/2WPM+0.1 mg·L-1 NAA+1.5 mg·L-1ZT,增殖倍数为5.53,平均株高达5.15 cm;而组培苗最适生根培养基为1/2WPM+0.5 mg·L-1IBA+200 mg·L-1活性炭(AC),其生根率、有效生根率、根长和生根数量分别为87.16%、87.16%、4.39 cm和6.32条;组培苗最适移栽基质是苔藓,移栽成活率可达93.47%。

     

    Abstract: The young branches of rabbit eye blueberry ‘Tifblue’ were used as experimental materials, the effects of fungicides, medium and growth hormone on explant sterilization, cluster bud induction, subculture propagation, rooting and transplantation of tissue culture seedlings were studied by tissue culture method with different concentrations and types of agents, culture media and auxin, in order to provide reference for the construction of comprehensive and efficient rapid propagation system of blueberry.The results showed that the best sterilization method for explants was 10% NaClO solution disinfection for 15 minutes, the pollution was reduced to 17.34%,and the number of germination was 9.71.The optimal medium for inducing tufted buds in blueberry stem segment was 1/2 WPM+1.5 mg·L-1 ZT+0.2 mg·L-1 IBA,and the success rate was 68.36%.The optimal subculture medium was 1/2 WPM+0.1 mg·L-1 NAA+1.5 mg·L-1 ZT,the multiplication rate was 5.53,and the average plant reached 5.15 cm.The optimal rooting medium for tissue culture was 1/2 WPM+0.5 mg·L-1 IBA+200 mg·L-1 activated carbon(AC),and the rooting rate, effective rooting rate, root length and number were 87.16%,87.16%,4.39 cm and 6.32,respectively.Moss was the best substrate for tissue culture and the survival rate was 93.47%.

     

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