V. M. Pakhomova, A. I. Daminova
Kazan State Agrarian University, ul. K. Marksa, 65, Kazan’, 420015, Russian Federation
Abstract. The purpose of the research was to study the effect of the natural antioxidants such as L-ascorbic acid and gamma-glutaminyl-cysteinyl-glycine (glutathione) in a wide concentration range (from 10E-13 to 10E-3 M) on the growth function of pea roots (the length of the main root and lateral roots). Equally-sized intact pea seeds, harvested in 2018, were germinated in distilled water. Seedlings with a germinal root length of 0.5 cm were grown in Petri dishes on filter paper with appropriate solutions and a liquid level of 1–2 mm in a thermostat (darkness) at 26 C. The roots were measured in 72 h and 120 h of the exposure. The control was the plants grown in distilled water (pH 6.2). A concentration of 10E-3 M of the studied compounds led to a strong inhibition of root growth. Exposure to 10E-5 M solutions for 72 h contributed to a significant increase in the length of the main roots of the seedlings. A 120-hour action of these substances at the concentration of 10E-11 M increased the main root length and lateral roots growth that was not noted in the other variants. It was suggested that the growth-inhibiting and growth-promoting effects of L-ascorbic acid and gamma-glutaminyl-cysteinyl-glycine (glutathione) solutions are non-specific at the concentrations of 10E-3 M, 10E-5 M, and 10E-11 M. Bioantioxidants most likely influenced the growth process indirectly. These data can be applied in plant growing using the studied substances as stimulants and inhibitors of plant growth.
Keywords: pea roots; growth stimulation; natural antioxidants; L-ascorbic acid; gamma-glutaminyl-cysteinyl-glycine (glutathione); concentration effect; exposure duration; non-specific mechanism.
Author Details: V. M. Pakhomova, D. Sc. (Biol.), prof. (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); A. I. Daminova, Cand. Sc. (Agr.), assoc. prof.
For citation: Pakhomova V. M., Daminova A. I. The Effect of Antioxidants on Plant Growth. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 11. Pp. 26–28 (in Russ.). DOI: 10.24411/0235-2451-2019-11106.