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      Response of wheat genotypes to osmotic stress in terms of seed germination and growth of seedling Translated title: Efecto del estrés osmótico en la germinación y crecimiento de plántulas en distintos genotipos de trigo

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          Abstract

          To compare the wheat genotypes in terms of seed germination and growth of seedling under osmotic stress conditions, a laboratory experiment was conducted using a completely random design with factorial arrangement. The wheat genotype (G) consisted of eight genotypes numbered as (G1) 9103, (G2) 9116, (G3) 9203, (G4) 9205, (G5) 9207, (G6) 9212, (G7) C-81-10 and (G8) cross-shahi. The osmotic potential factor (Ψs) consisted of five levels (-1.2,-0.9,-0.6,-0.3 and 0 MPa). Genotypes G2, G6 and G7 prevailed in terms of germination percentage (GP) up to Ψs = -1.2, while genotype G8 and genotype G6 were only prevalent at Ψs = 0 and up to Ψs = -0.9, respectively. The two genotypes of G1 and G4 had lower GPs at Ψs = 0 compared to other genotypes but these two genotypes had no significant difference with resistant genotype G7 in terms of GP at Ψs = -0.3. This trend continued in case of genotype G1 up to Ψs = -1.2, while genotype G4 had the lowest GP value next to G8 cultivar from Ψs = -0.6 to Ψs = -1.2. Interaction effect of Ψs x genotype was significant for Coleoptile Length (CL), Radicle Length (RL), Plumule Length (SL). G7 prevailed in terms of CL with a significant difference at Ψs = -1.2 while G1 lost its dominance. The same trend was observed in interaction effect of Ψs x genotype for SL. According to GP and CL and SL values, modern genotype G7 was the most resistant genotype to osmotic stress while old genotype G8 was the most sensitive one.

          Translated abstract

          El estudio tuvo como objetivo comparar, bajo condiciones de laboratorio, la germinación de semillas y el crecimiento de plántulas bajo condiciones de estrés osmótico de distintos genotipos de trigo. El diseño experimental fue de bloques completamente al azar con arreglo factorial y tres repeticiones. Se evaluaron ocho genotipos de trigo (G): 9103 (G1); 9116 (G2); 9203 (G3); 9205 (G4); 9207 (G5); 9212 (G6); C-81-10 (G7) y, cross-shahi (G8). El potencial osmótico ( Ψs) fue evaluado en cinco niveles (-1,2, -0,9, -0,6, -0,3 y 0 MPa). Los genotipos G2, G6 y G7 obtuvieron un mayor porcentaje de germinación (PG) a -1,2 MPa. Los genotipos G1, G4 y G5 tuvieron el menor porcentaje de germinación con Ψs = 0. El efecto de la interacción de Ψs x genotipo fue estadísticamente significativa para longitud de coleóptilo (CL), longitud de radícula (RL) y longitud de la plúmula (SL), según genotipo. De acuerdo con los análisis de resultados el genotipo G7 fue el más resistente al estrés osmótico y G8 fue el genotipo más sensible.

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          • Record: found
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          Fungal endophytes improve wheat seed germination under heat and drought stress

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            Water stress causes differential effects on germination indices, total soluble sugar and proline content in wheat (Triticum aestivum L.) genotypes

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              • Record: found
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              Repeatability and Genotype × Environment Interaction of Coleoptile Length Measurements in Winter Wheat

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                idesia
                Idesia (Arica)
                Idesia
                Universidad de Tarapacá. Facultad de Ciencias Agronómicas (Arica )
                0718-3429
                May 2014
                : 32
                : 2
                : 57-63
                Affiliations
                [1 ] Razavi Khorasan Agriculture and Natural Resources Research Center Iran
                [2 ] Islamic Azad University Iran
                Article
                S0718-34292014000200008
                10.4067/s0718-34292014000200008
                8b3a3178-1c9c-4930-ada6-16007ad87d26

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0718-3429&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                wheat,germiantion,seedling growth,osmotic stress,trigo,germinación,crecimiento de las plántulas,estrés osmótico

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