Development of the radicular system of the radish in condition of hydric stress

Abstract

The objective of this work was to evaluate the development of the radicular system of radish plants, to cultivate VIP Crimson Special Selection submitted to the hydric stress in different phases of development. The experiment was driven inside greenhouse located in (CCA-UFES), Alegre-ES, Brazil (latitude 20th 45'S and longitude 41th 30'W). To accomplish the evaluations, they set radish plants in polyethylene vases of 4,5 L of substratum. The experiment was arranged in a randomized design with subdivided portion 4x5, with four repetitions, being each pot considered as a repetition, which was composed by three radish plants. The treatments in the portion were in hydric stress in the phases II; III and IV, respectively, denominated D7; D14 and D21 and, the witness D0 that was irrigated during the whole cycle of the culture. In the subsections there were made evaluations to the 7th; 14th; 21th; 28th and 35th day for length of the largest root and evaluations to the 28th and 35 th day for diameter of the bulb. The hydric stress reduces the diameter of the bulb and the fresh matter of the root significantly, reducing the final production in around 50%. Para the length of the largest root there was not significant difference at the end of the cycle of the culture.