1 An Innovated Rhizotron for Studying Root Growth and Analyses on Chickpea (Cicer arietinum L.) Seyed Saeid Hojjat Research Center for Plant Sciences, Ferdowsi University of Mashhad, Mashhad, Iran Corresponding Author’s E-mail: seyedsaeidhojjat@gmail.com Abstract The aim of the present article is to report an innovative design of hydroponic rhizotrons adapted to Chickpea (Cicer arietinum L.). The setup allows to simultaneously characterize the shoot development from seedling to adult stages, i.e. from seed to seed. This system offers the advantages of hydroponics such as control of root environment and easy access to the roots for measurements or sampling. This system makes it possible, on the same plants of Chickpea, root sampling and characterization of aerial development up to adult size as well as a valuable tool for addressing fundamental questions in whole plant root. Keywords: Rhizotron; Hydroponic Root Growth; Chickpea; Hogland solation 1. INTRODUCTION Crucial factors for plant improvement are the light-weight amount and satisfactory additionally like water and nutrient accessibility in soils (Leitner et al 2014). Roots of better plants perform many crucial capabilities: they supply anchorage, supply water, and minerals, and have a regulatory function also due to the fact they grow underground and aren't truly handy, roots are numerous much less completely studied than plant shoots (Morris et al 1982). Presently, understanding the impact of roots and rhizosphere traits on plant aid potency is of the highest connation (Hinsinger et al., 2011). Regardless of edaphic stresses represent the primary quandary to plant growth (Lynch, 2007), roots developments are poorly investigated as compared to the aboveground components of the plant (Smith et al., 2000) but techniques are wont to growth the accessibility of plant roots (Böhm, 1979). Regarding water and nutrient uptake, root architecture is that the primary side of plant productiveness and needs to be correctly considered as soon as describing root processes (Lynch, 2007; Smith and de Smet, 2012). The distribution of plant roots is called root system architecture (RSA), which adjustments over time due to the fact the plant grows and adapts to soil situations (de Dorlodot et al., 2007, Doerner and Tian 2013). Progress in root measure methodology has improved our capability to visualise, quantify, and create mentally root architecture and its dating to plant productivity (Lynch, 1995). Many non-soil filled methods for evaluating roots are provided, along with hydroponic, Aeroponic, and agar-plate systems (Gregory et al. 2009). Many techniques are used to growth the accessibility of plant roots (Huck, 1982). ancient techniques, like excavation and related trenching or soil coring methods, constitute the most not unusual methods for exploring root architecture, distribution, and morphology under field situations, but, they are inadequate for addressing studies on root functioning. those techniques appear numerous confinements: in-depth negative exertions wished for the duration of excavation, fine roots losses due of the requirement to adopt sample system capable of sifting through huge quantities of soil all through a shorter time, the commonplace cost-effective restrict to upmost soil layers and consequently the large number of samples required, etc. (Polomsky and Kuhn, 2002). Even though recent technological advancements desired the study of roots, such research lives elusive, highly-priced, long, and technically stringent, particularly beneath field situations wherever many uncontrolled factors intrude (Gregory, 2009). Various types of state-of-the-art beneath ground chambers are constructed which allow plant roots to be studied underneath replicated situations whereas shoots are uncovered to field environments. Rhizotrons for the non-destructive analysis of root growth have long been a critical research tool. Those larger root statement laboratories are referred to as “rhizotrons,” the Greek “Rhizos,” that means root and “Tron,” this means that a device for studying. Rhizotrons are essential units to noninvasively study the dynamics of root