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  1. Vol. 10 No. 5, p. 491-492
     
    Received: Dec 5, 1969
    Published: Sept, 1970


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doi:10.2135/cropsci1970.0011183X001000050009x

Selection for Seed Setting in Hybrid Populations of Autotetraploid Barley, Hordeum vulgare L. emend Lam.1

  1. K. N. Kao,
  2. E. Reinbergs and
  3. B. L. Harvey2

Abstract

Abstract

Selection for increased seed set was carried out in the segregating generations of four hybrid populations derived from intercrosses of five autotetraploid lines. The seed set of the early generations of the hybrid populations was higher than the respective parents and was maintained through the F5 to F10 generations. Selection, however, was ineffective in increasing the percentage seed set. The greater seed set of the hybrids was probably not due to heterosis unless a great deal of preferential pairing occurred. Selection was also carried out for reduced seed set and this was also ineffective. The lack of success in selection indicates a need to select on the basis of specific combining ability to improve the seed set of autotetraploid barleys.

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