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Rooting Ability of Hardwood Cuttings in Highbush Blueberry (Vaccinium corymbosum L.) Using Different Indole-butyric Acid Concentrations

文献类型： 外文期刊

作者： An, Haishan 1 ; Meng, Jiajia 2 ; Xu, Fangjie 1 ; Jiang, Shuang 1 ; Wang, Xiaoqing 1 ; Shi, Chunhui 1 ; Zhou, Boqiang 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Forestry & Pomol Res Inst, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

2.Shanghai Acad Agr Sci, Shanghai Key Lab Protected Hort Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

3.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

关键词： Vaccinium corymbosum; hardwood cuttings; rooting response; position effect; indole-butyric acid concentration

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

ISSN： 0018-5345

年卷期： 2019 年 54 卷 2 期

页码：

收录情况： SCI

摘要： Vegetative propagation by cuttings is a very popular method. However, blueberry propagation using cuttings is still a main factor limiting its expansion because its results can vary according to the blueberry cultivar and environmental factors. This study aimed to evaluate the rooting abilities of hardwood cuttings for six blueberry cultivars (O'Neal, Misty, Diana, Biloxi, Bluebeauty, and Coville) using three different exogenous indole-butyric acid (IBA) concentrations (1000, 2000, and 3000 ppm), and to determine if the cutting position (basal, central, apical) affects rooting performance. A control treatment (0 ppm IBA) was also performed. After 90 days of each treatment, rooting percentage, average root length, and average root number per cutting were assessed and used to calculate rooting index, which is a measure of rooting ability. The rooting percentages of hardwood cuttings differed largely among cultivars and were highest for ` Bluebeauty' (68.55%), followed by 'Biloxi' (68.01%). The rooting index values of these two cultivars (33.59 and 35.18, respectively) were significantly higher than those of the other four cultivars. The rooting response of blueberry hardwood cuttings to IBA concentrations was quadratic, and 1000 and 2000 ppm IBA were sufficient to express the maximum rooting percentage inmost cultivars. The rooting abilities of basal, central, and apical cuttingswere similar with treatments with high IBA concentrations. The effects of the cultivar, IBA concentration, and interaction between them on rooting percentage, average root length, and average root number were significant; however, the effects of the cutting position on the rooting percentage and average root length were not. This suggested that the rooting abilities of blueberry hardwood cuttings were significantly influenced by the cultivar and IBA concentration rather than by the cutting position.

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