Indian Society of Genetics & Plant Breeding
Within location replication is necessary for efficient analysis
of multi-locational on-farm yield trials for testing wide
adaptability of crop varieties using presently available
methods. However, within location replication is practically
difficult, comparatively more expensive and cumbersome
even with few varieties in the test. A method to efficiently
analyze within location non-replicated multi-locational onfarm
yield trials is proposed. In the proposed method,
non-replicated trial is conducted in each location and yield
deviations of varieties from the maximum yield in each
location are computed and an analysis of variance is
performed on variety yield deviations pooled over all
locations. Mean deviation (d ) cand variance of deviations
(s2) across locations are computed for each variety. Varieties
are selected simultaneously for significantly lower and
lower s2 and the variety with the lowest d and the lowest
2 is the most adaptable varietyin the test. The efficiency,
effectiveness and the reliability of the proposed method is
illustrated in comparison to the most appropriate presently
available method with within location replication taking
rice (Oryza sativa L.) as an example.
Keywords: Adaptability, crop varieties, multi-locational on-farm yield trials, within location nonreplication
Year: 2016
Volume: 76
Issue: 3
Article DOI: 10.5958/0975-6906.2016.00051.1
Print ISSN: 0019-5200
Online ISSN: 0975-6906
D. Sumith de Z. Abeysiriwardena info_circle
S. Samita info_circle
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