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Quantification of differences in germination behaviour of pelleted and coated sugar beet seeds using X-ray Computed Tomography (X-ray CT)

机译:使用X射线计算机断层扫描(X射线CT)定量沉淀的和包衣的甜菜种子发芽行为的差异

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摘要

Seed enhancement technologies i.e. priming, pelleting and coating have been extensively9 used throughout the last century to improve crop yield and to reduce losses associated with pest infestation. However, until recently, it has not been possible to non-destructively assess the effect of seed enhancement technologies belowground due to the opacity of soil. Using X- ray Computed Tomography (X-ray CT) we undertook a 4D visualisation of the germination process of four different sugar beet seed enhancement treatments (untreated / naked, coated, pelleted and pelleted + coated) in soil. The aim of this study was to improve the understanding of the germination process in the natural environment of the seed to inform future soil management and seed enhancement processes. Using X-ray CT we were able to quantify the germination and establishment process of different seed enhancement technologies in soil non-destructively for the first time. We observed a delay in seedling growth posed by the addition of a physical barrier, i.e. the seed coating. However, an enhanced radicle growth rate was observed in pelleted, as well as pelleted and coated seeds, after overcoming the physical barrier. The disadvantage posed by the addition of seed coating was overcome after four days of seedling growth. Further work should focus on refinements to the type and composition of the pelleting which we observed to have a retarded effect on seed germination.
机译:整个上个世纪,种子增强技术(即上底漆,制粒和包衣)已被广泛使用9,以提高农作物产量并减少与害虫侵害相关的损失。但是,直到最近,由于土壤的不透明性,还不可能非破坏性地评估地下种子增强技术的效果。使用X射线计算机断层扫描(X射线CT),我们对土壤中四种不同甜菜种子增强处理(未经处理/裸露,包衣,造粒和造粒+包衣)的发芽过程进行了4D可视化。这项研究的目的是增进对种子自然环境中发芽过程的了解,为将来的土壤管理和种子增强过程提供信息。使用X射线CT,我们首次能够无损地量化土壤中不同种子增强技术的萌发和建立过程。我们观察到由于添加物理屏障(即种子包衣)而导致的幼苗生长延迟。但是,克服物理障碍后,在颗粒状,颗粒状和包衣种子中观察到了较高的胚根生长速率。幼苗生长四天后,克服了添加种子包衣带来的缺点。进一步的工作应集中在改进制粒的类型和组成上,我们观察到制粒对种子发芽有延迟的作用。

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