Abstract
The inherent precision of spot blotch (SB) and common root rot (CRR) screening procedure through repeatability analysis was evaluated in seedling plants of three barley genotypes (Thibaut, WI2291 and AECS 76). High repeatability of assessments obtained by partitioning of variance components (69.0 to 86.0) for BS and (75.0 to 85.0) for CRR. On the basis of the variance component estimate, gain in precision was calculated using Falconer method. The results show that a moderate increase of precision (~ 2% for SB and ~ 4% for CRR) may be acquired through repeating the screening a second time for both diseases. Attained information from this study suggests that seedling screening of both SB and CRR under controlled conditions provides consistent information on host response, and reliable host reaction information could be obtained through a less number of repeated evaluations.
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Arabi, M.I.E., Jawhar, M. Repeatability of Barley Seedling Reaction to Spot Blotch and Common Root Rot. CEREAL RESEARCH COMMUNICATIONS 32, 249–253 (2004). https://doi.org/10.1007/BF03543306
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DOI: https://doi.org/10.1007/BF03543306