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GrainGenes Reference Report: EUP-137-243

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Reference	EUP-137-243
Title	Genetic variation in specific root length in Scandinavian wheat and barley accessions.
Journal	Euphytica
Year	2004
Volume	137
Pages	243-249
Author	Loes AK Gahoonia TS
Abstract	Specific root length (SRL, m root g SUP -1 root dry matter) was studied in a broad selection of old and current accessions of spring wheat and barley from Norway and Sweden, at sub-optimal phosphorus conditions in nutrient solution and soil. The results indicated that genotype did not have a significant effect on SRL. A close relationship between root length (RL) and root weight (RW) was found, and more than 70% of the variation in root length was explained by root weight of representative and homogenous root samples. In nutrient solution, the relationship between RL and RW was described by the regression equations RL=0.32 RW-0.19 ( R SUP 2 =0.74) for wheat and RL=0.20 RW+0.73 ( R SUP 2 =0.56) for barley. In the soil experiment, the relationships between RL and RW were described by the equations RL=0.15 RW+0.95 ( R SUP 2 =0.67) for barley and RL=0.16 RW+0.50 ( R SUP 2 =0.77) for wheat. Hence, in screenings of a large number of cereal genotypes, the root length may be estimated with good accuracy by records of root weight and an appropriate regression equation
Keyword	barley genetic variation length wheat

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