Phenological growth stages of stevia (Stevia rebaudiana Bertoni) according to the Biologische Bundesanstalt Bundessortenamt and Chemical Industry (BBCH) scale,Annals of Applied Biology

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Phenological growth stages of stevia (Stevia rebaudiana Bertoni) according to the Biologische Bundesanstalt Bundessortenamt and Chemical Industry (BBCH) scale
Annals of Applied Biology ( IF 2.2 ) Pub Date : 2020-07-12 , DOI: 10.1111/aab.12626
Zoé Le Bihan _{1,

2} , Patrick Cosson ₁ , Dominique Rolin ₁ , Valérie Schurdi‐Levraud ₁

Affiliation

Stevia (Stevia rebaudiana Bertoni) is a perennial crop belonging to the Asteraceae family. Its main agronomic and industrial interest is the accumulation in its leaves of steviol glycosides (SG), natural acaloric sweeteners which are 300 times sweeter than sucrose. In order to expand phenotyping knowledge on this emerging crop, researchers and breeders need a universal scale to describe the development of this plant. The objective of this study was to describe the phenological growth stages of stevia through the use of the Biologische Bundesanstalt Bundessortenamt and Chemical Industry (BBCH) scale to provide a standard scale for stevia grown under temperate conditions of production and climate. The observation of phenological stages was performed on genetic resources and validated on stevia progenies grown in field conditions. The 10 phenological stages, namely germination, bud development, foliar development, side shoots appearance, stems elongation, development of harvestable part of the crop, inflorescence emergence, flowering, development of fruit, seeds ripening and senescence, were used to describe the stevia, supplemented with pictures. The chronology and duration of each stage were also observed and described according to the accumulation of degree days during the growing season. This study presents the first BBCH scale established for S. rebaudiana cultivated in temperate conditions and a chronology of phenological stages based on the accumulation of thermal time, through growing degree day calculation (°C/day). This work provides a tool that can be widely used by farmers, breeders and researchers leading to better agronomic management and scientific communication.

中文翻译：

甜菊（Stevia rebaudiana Bertoni）的物候生长阶段根据生物化学和化学工业（BBCH）规模进行

甜叶菊（甜叶菊Bertoni）是菊科的多年生作物。它的主要农学和工业兴趣是其叶子中甜菊糖苷（SG）的积累，这是天然蔗糖甜味剂，比蔗糖甜300倍。为了扩展这种新兴作物的表型知识，研究人员和育种人员需要一个通用的规模来描述这种植物的发育。这项研究的目的是通过使用生物化学和化学工业（BBCH）量表来描述甜叶菊的物候生长阶段，以为在温和的生产和气候条件下生长的甜菊提供标准量表。物候期的观察是在遗传资源上进行的，并在田间条件下生长的甜叶菊后代上进行了验证。十个物候阶段用甜叶菊描述甜叶菊，即发芽，芽发育，叶发育，侧枝外观，茎伸长，作物可收获部分的发育，花序出苗，开花，果实发育，种子成熟和衰老。还根据生长季节中度数天的累积，观察和描述了每个阶段的时间顺序和持续时间。这项研究提出了第一个为还根据生长季节中度数天的累积，观察和描述了每个阶段的时间顺序和持续时间。这项研究提出了第一个为还根据生长季节中度数日的累积，观察和描述了每个阶段的时间顺序和持续时间。这项研究提出了第一个为通过生长天数的计算（°C /天），在温带条件下和根据热时间积累在物候阶段的年代学中培养的瑞氏链球菌。这项工作提供了一种可以被农民，育种者和研究人员广泛使用的工具，可以带来更好的农艺管理和科学交流。

更新日期：2020-07-12

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