Growth Response of Aboveground and Belowground of Eustoma grandiflorum to Elevated Co2 in Hydroponic Culture

علوم باغبانی

Article 6, Volume 31, Issue 4, November 2017, Pages 634-642   

Document Type: Research Article

DOI: 10.22067/jhorts4.v31i4.49233

Authors

Mahin Nikoo; Mahmood Shoor^* ; Ali Tehranifar; Elham Saeedi Pooya

Ferdowsi University of Mashhad

Abstract

Introduction: One of the climate change sign is variation in greenhouse gases in the Earth's atmosphere. Carbon dioxide is the most important greenhouse gas that is released into the atmosphere by humans. It is expected that addition of carbon dioxide could effect the energy balance and global climate. Climate change is effective on agricultural productions. It is clear that different plants have different responses to Co2 variation. These responses are consisting of yield, growth characteristic and variation in root/shoot ratio of plants. On the other hand, using growing media are expanding for plants because of their advantages such as plants nutrient control, reducing the incidence of diseases and pests and increasing the quantity and quality rather than soil cultivation. Properties of various materials as substrates influence directly or indirectly on plant growth and crop production., Hydroponic method can be considered as one of the important methods to optimize water use in agriculture, especially in many countries are located in arid and semi-arid regions that have water crisis. Lisianthus is one of the most beautiful flowers with folded petals in white, blue and purple. I-ts scientific name is Eustoma grandiflorum from the family of Gentianaceae and native to North America. It has variety of annual, biennial or short-lived perennial. The aim of this study was to explore the effect of Co2 enrichment on growth response of aboveground and belowground of Eustoma grandiflorum under increasing of Co2 greenhouse gases in hydroponic culture.
Materials and Methods: The experiment was done as a split-plot based on completely randomized experimental design with three replications at greenhouse of Ferdowsi University of Mashhad. The treatments were consists of three concentrations of carbon dioxide (380 as controls, 750 and 1050 ppm) as main plots and two cultivars Yodel white and GCREC-blue as subplots. Some characteristic such as plant height, internode length, root volume, root area, root and shoot dry weight were measured. Data were analyzed by JMP software Version 8 using analysis of variance (ANOVA) and significant differences between means were determined by using LSD test at P < 0.05.
Results and Discussion: The results of analysis of variance indicated that the effect of Co2 treatment was significant (p

Keywords

Greenhouse Gases; Internode; Weight; Hydroponic

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