Author(s):

RB Bhuva, CA Babariya, VS Balar and JA Gadhiya

Abstract: Seventy diverse genotype of soybean were evaluated in a randomized block design with three replications to study of selection indices under rainfed conditions during kharif 2019-20. Thirty-one selection indices involving seed yield per plant and four yield components viz., number of pods per plant, number of clusters per plant, biological yield per plant and harvest index were constructed using the discriminant function technique. Discriminant function analysis indicated that selection efficiency of the function was improved by increasing number of characters in the index. Among the single character index, number of pods per plant exhibited higher genetic advance and relative efficiency over straight selection for seed yield per plant. The index based on three characters viz., number of pods per plant, number of clusters per plant and biological yield per plant possessed high genetic gain and relative efficiency. These characters could be advantageously exploited in the soybean breeding programmes.

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