Instrumental assessment of plant development stability

Abstract

The possibility of using the phytoindication method to study the stability of plant development is considered. The study is carried out on plants of Alchemilla baltica, in which morphological (length of veins) and optical (transmission coefficients in the visible range) signs of leaf surface areas are measured. The indices of fluctuating asymmetry are determined based on morphological and optical features. A fluctuometer is developed that allows non-contact method to obtain information about the fluctuating asymmetry of the light transmission coefficient by leaf tissues as a bilateral feature. The fluctuometer measurement scheme is based on the alternate determination of illumination created by a light stream falling from above passing through sections of a plant leaf located symmetrically to the left and right of its central vein. A strong linear relationship is revealed between the data obtained for the two types of features (Pearson correlation coefficient 0.86), which is confirmed by the value of the coefficient of determination of the linear model is 0.74; the value of the coefficient of concordance is 0.7. Thus, the proposed method and device make it possible to implement an express method of phytoindication of the environment.

Plant phenotyping relevance

葉の形態・光学的特徴から植物発生の安定性を評価する非接触測定装置（フルクチュオメータ）を開発し、既存特徴との相関で検証しており、植物フェノタイピング手法が中心である。

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