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  1. Vol. 15 No. 3, p. 359-360
     
    Received: June 1, 1974
    Published: May, 1975


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doi:10.2135/cropsci1975.0011183X001500030023x

Heading Dates in Six Avena sativa L. × A. sterilis L. Crosses1

  1. P. M. Lyrene and
  2. H. L. Shands2

Abstract

Abstract

Heading dates were studied in six Avena sativa L. ×A. sterilis L. crosses. The A. sterilis parents (CI 8077 and PI 295932) were later than the five A. sativa parents by 2 to 30 days. F1 plants and many F3 lines were earlier than the A. sativa parents. The earliness of interspecific progenies appeared to result from earliness factors inherited from A. sterilis parents; factors which were not expressed in A. sterilis due to a vernalization requirement. The vernalization requirement was absent in F1 progenies, apparently because of genes from A. sativa.

Successful selection for early maturity in A. sativa × A. sterilis requires elimination of progeny with a vernal. ization requirement. Progeny tests of F3 lines indicated that earliness was easy to stabilize by selection.

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