Madras Agricultural Journal
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GENOTYPE x ENVIRONMENT INTERACTIONS FOR SEED YIELD IN CASTORBEAN

Abstract

Twelve promising genotypes of castorsean (Ricinus communis L.) were evaluated for seed yield during monsoon season of 1978, 1980, 1981 and 1982. Genotype x en- vironment interactions were significant indicating the differential response of genotypes. A major portion of the interaction was accounted for by the presence of linear compo- nent although non-linear component was also significant. The genotypes (Aruna) and (279) appeared best suited for favourable growing seasons, whereas genotypes 1578 and R 63 gave stable performance under fluctuating environmental conditions.

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