ABSTRACT

Methodology for analysing textural properties of sugar beet roots in the laboratory has previously been established. It has been shown to be reliable and of value in exploring relationships between textural properties, damage rates, and storability of varieties. In this paper, a methodology for the assessment of textural properties in-field, prior to harvest, using an inexpensive handheld penetrometer is examined. Three sugar beet varieties were grown in Belgium, the Netherlands, and Sweden during 2019. Textural properties were assessed in-field with the handheld penetrometer 2, 1 and 0 months prior to harvest, and with the laboratory penetrometer directly after harvest. Comparison of the results showed generally strong correlations. A power analysis suggests a difference in mean Handheld Pressure of 0.10 MPa could be found significant within a large trial with a block design. The reliability of the handheld penetrometer was further assessed in the Swedish national variety trials over three years (2019-2021). Correlation coefficients of 0.86 and 0.94 were found between mean Handheld Pressure for 2019 and 2020, and 2020 and 2021 respectively. The handheld penetrometer can be applied as an economic means of quantifying differences in textural properties of sugar beet varieties. Clear operating procedure and training must exist.

摘要

以前已经建立了在实验室中分析甜菜根的质地特性的方法。它已被证明在探索品种的质地特性、损坏率和可储存性之间的关系方面是可靠和有价值的。在本文中，研究了一种在收获前使用廉价的手持式穿透计评估田间纹理特性的方法。2019 年，比利时、荷兰和瑞典种植了三个甜菜品种。在收获前 2、1 和 0 个月使用手持式渗透仪在田间评估质地特性，并在收获后直接使用实验室渗透仪进行评估。结果的比较显示出普遍的强相关性。功效分析表明平均手持压力的差异为 0。在采用块设计的大型试验中，可以发现 10 MPa 非常重要。在三年（2019-2021）的瑞典国家品种试验中进一步评估了手持式测深仪的可靠性。2019 年和 2020 年以及 2020 年和 2021 年的平均手持压力之间的相关系数分别为 0.86 和 0.94。手持式透度计可用作量化甜菜品种质地特性差异的经济手段。必须有明确的操作程序和培训。手持式透度计可用作量化甜菜品种质地特性差异的经济手段。必须有明确的操作程序和培训。手持式透度计可用作量化甜菜品种质地特性差异的经济手段。必须有明确的操作程序和培训。