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This article in CS

  1. Vol. 31 No. 4, p. 1075-1077
     
    Received: July 9, 1990


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doi:10.2135/cropsci1991.0011183X003100040047x

Recurrent Mass Selection Based on Selfed-Plant Evaluation in Allogamous Species

  1. B. S. Dhillon 
  1. Dep. of Plant Breeding, Punjab Agric. Univ., Ludhiana 141 004, India

Abstract

Abstract

Plant breeders need to develop methods having higher genetic gains than those available. The objective of this study is to propose recurrent selfed-plant mass (SPM) selection, derive its expected genetic gain (ΔGS), and to compare ΔGS with that of mass selection (ΔGM). In SPM selection, S1 plants are evaluated and recombined, and a cycle is completed in a year if an off-season nursery is available. The ΔGS per cycle was 18 to 34% higher than ΔGM for degree of dominance ranging from none to complete dominance and the frequency of favourable alleles from low to intermediate (0.1–0.5). The SPM selection has another advantage, in that deleterious recessive alleles are exposed.

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Copyright © 1991. Crop Science Society of AmericaCopyright © 1991 by the Crop Science Society of America, Inc.