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首页> 外文期刊>Acta Horticulturae >Influence of varying plastic films on plant and fruit performance of primocane raspberry 'Erika'
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Influence of varying plastic films on plant and fruit performance of primocane raspberry 'Erika'

机译：不同塑料薄膜对Primocane Raspbery'Erika的植物和果实性能的影响

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In 2014, potted primocane raspberry Rubus idaeus 'Erika' was cultivated under open field conditions and under high tunnels with two plastic types (UVB-blocking: transmittance 90% with 0% transparency for UV B radiation and UVB-window: transmittance 90%,with 75% transparency for UV B) to evaluate their impact on net photosynthesis and different plant characteristics like yield and diverse fruit quality traits. Diurnal photosynthetic response curves displayed a strong midday depression with a partial recovery in the late afternoon and were mostly influenced by air temperature and rel. humidity of ambient conditions but also by varying climatic conditions under the high tunnels (increased air temperature and reduced rel. humidity than in open field). Critical temperature for net photosynthesis in this study was slightly above 20°C. However, the effect of the different plastic materials on photosynthesis was negligible compared to temperature and relative humidity. At harvest end net photosynthesis wasinfluenced by the treatment as harvest period under high tunnels was 3 weeks earlier in comparison to open field and plant senescence occurred earlier. Yield was lowest in the open field while fruit weight was lowest under the UV B window plastic film. The treatments had no influence on fruit firmness, soluble solids, titratable acidity and vitamin C content. Fruits grown in open field were more intense in their red color (a* value and Hue), corresponding to higher total anthocyanin content. Individualanthocyanins were inconsistently affected.
机译：2014年，盆栽主要覆盆子Rubus Idaeus'Erika'在开放的现场条件下培养，在高隧道下培养，具有两种塑料类型（UVB阻断：透射率为0％UV B辐射透明度和UVB窗口：透射率90％， UV B的75％透明度）评估它们对净光合作用和不同植物特征的影响，如产量和多样化的果实品质性状。昼夜光合反应曲线显示出强烈的午间凹陷，下午偏恢复，主要受到空气温度和rel的影响。环境条件的湿度，但也通过在高隧道下变化的气候条件（增加空气温度和减少的rel。湿度而不是开放场）。本研究中净光合作用的临界温度略高于20°C。然而，与温度和相对湿度相比，不同塑料材料对光合作用的影响是可忽略的。在收获端净光合作用时，由于高隧道下的收获期为3周，与开放的田间和植物衰老发生在3周内。在开放场中产量最低，而UV B窗塑料薄膜下果子重量最低。该治疗对果实，可溶于固体，可滴定酸度和维生素C含量没有影响。在开放场中生长的果实在红色的红色（*值和色调）中更加强烈，对应于较高的半粘蛋白含量。个体蒽氰蛋白受到不一致的影响。

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