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针对浙江省设施栽培‘红颊’草莓出现的花而不实问题,研究不同种苗来源和育苗期药剂处理对草莓花粉活力和产量的影响。结果表明:育苗期喷施200 mg/L多效唑,在草莓苗定植成活率、花序数、产量、大果率和花粉活力表现上,效果好于喷施300 mg/L多效唑,与对照相比,除了大果率其他指标都有所降低;在2个浓度多效唑处理15 d后加施20 mg/L赤霉素,各项指标均明显提升,尤其200 mg/L多效唑加20 mg/L赤霉素处理后,成活率和大果率显著提高;83 mg/L烯唑醇无论加施20 mg/L赤霉素与否,都不利于草莓的开花结果。丛生苗和疑似小叶苗花粉活力非常低,畸形率极高,几乎没有商品果,这可能是‘红颊’草莓花而不实现象的主要因素。建议在育苗后期采用200mg/L多效唑加20 mg/L赤霉素控苗,组培苗圃发现丛生苗、田间发现小叶苗及疑似小叶苗及时拔除。
The effects of different seedling sources and seed treatment on pollen viability and yield of strawberry were studied in view of the problem of flower blossoming in ’cheekberry’ strawberry plantation in Zhejiang Province. The results showed that spraying of 200 mg / L paclobutrazol at the seedling raising stage was better than spraying 300 mg / L paclobutrazol at the survival rate, inflorescence number, yield, fruit yield and pollen viability of strawberry seedlings. Compared with the control, In addition to other indicators of large fruit rate have decreased; two concentrations of paclobutrazol treatment 15 d after the application of 20 mg / L gibberellin, the indicators were significantly improved, especially 200 mg / L paclobutrazol plus 20 mg / L Gibberella After treatment, the survival rate and the percentage of large fruit increased significantly. The application of 83 mg / L diniconazole, no matter with or without 20 mg / L gibberellin, was unfavorable for strawberry flowering. The pollen viability and the suspicious leaflet seedling vitality are very low, the deformity rate is extremely high, and there is almost no commercial fruit, which may be the main factor for the ’red cheek’ strawberry flower. Proposed in the late nursery with 200mg / L paclobutrazol plus 20 mg / L gibberellic acid control seedlings, tissue culture nursery found clusters of seedlings, found in the field of leaflet seedlings and suspected leaflet timely removal.