Development of Aerenchymal Formations and Adventitious Roots in Eragrostis plana and Eragrostis pilosa Submitted to a Flooded Soil Environment

Abstract

The experiment was accomplished in a greenhouse, where the mechanisms adaptive to the hypoxic environment of Eragrostis plana and Eragrostis Pilosa where evaluated when submitted to three conditions of humidity of the soil (50% of CRA, 100% of CRA and soil with sheet of water of 10 cm). The plants morphologic-anatomical indexes were appraised, and the aerenchymal formations and adventitious roots in the surface of the soil were quantified. In addition, the photosynthetic pigments and the electron transport capacity of the photosynthetic chain were quantified. It was noticed that the answers were similar among the species when submitted to an environment of water removal, showing more aerenchymal formations in the roots and adventitious roots in the surface of the soil. Negative effects on the electron transport and chlorophyll pigment formation were verified when submitted to the hypoxic environment showing reduction in dry mass of aerial and aerial parts, as well as a reduction in the emission of profiles. The evaluation of the plastic capacity of growth and development of the studied plants allows to conclude that the irrigation water management and water removal in rice crop are important in its control, due to the negative effects caused to the growth and development of the crop.

Vuelco del fique (Furcraea macrophylla) y sus repercusiones agronómicas

“…La generación de raíces adventicias como respuesta de supervivencia y la reorientación del crecimiento de la copa (como resultado se generó un tronco sinuoso) (Figura 1 C), luego de la postración de su tallo sobre el suelo (Figura 1 B), involucró un gasto energético adicional para la planta (Peripolli et al, 2020;Steffens & Rasmussen, 2016). En este proceso se consumieron los nutrientes almacenados en órganos como el tallo y hojas, que son considerados reservorio en plantas de metabolismo MAC, como el fique (Ortiz-González, Paredes Martínez & Cordero Cordero, 2021).…”