期刊名称：Studia Universitatis Moldaviae: Stiinte Exacte si Economice
印刷版ISSN：1857-2073
电子版ISSN：2345-1033
出版年度：2012
期号：1(51)
页码：39-43
出版社：Moldova State University
摘要：The radicular system has the ability to react to unfavorable environmental changes via morphological, structural andphysiological modifications, feature defined as root plasticity. Changes in root plasticity, in response to environmentalconditions were demonstrated in various agricultural crops. In order to highlight the effect of the humic and phenoliccompounds on plants the reaction of different soybean genotypes has been studied. The radicular system parameters:the length of main root, the root volume, the root biomass, the number and biomass of the nodules formed by nitricfixing bacteria have been investigated. The analyses have been done at the stage of soybeen blossoming. The plans havebeen grown in optimal condition of cultivation.The chemical seed treatment has caused the reduction of fresh roots biomass of genotypes sensitive to drought(Licurici and Horboveanca), favouring the accumulation of biomass of bacterial nodules in the Licurici genotype andraising the number of nitric fixing formations in the Horboveanca genotype. Small concentrations of substances haveincreased the volume of radicular system and the root biomass, while higher concentrations did not affect the radicularsystem development in drought tolerant genotypes (Zodiac and S4-04). Administrating a combination of LG 1.0% and0.05%OC substances favored the development of the soybean symbiotic system
