Association of characters in rice (Oryza sativa L.) genotypes selected for cold tolerance
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Abstract
belonging to the National Institute of Agricultural Sciences,
the present work was developed, with the objective of carrying
out an association analysis of 12 characters evaluated in early
cold sowing to a group of genotypes selected for cold tolerance.
For statistical data analysis, multivariate statistical techniques
of Principal Components and Cluster were used. The best
associations were given by panicle length, full grains per
panicle and yield, and between height 20 and 30 days after
germination. Also, along with the previous variables, empty
grains and shoot number 60 days after germination were the
most important characters for the analysis, such associations
constituting an essential information for cold tolerant material
selection in rice breeding programs.
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