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This article in CS

  1. Vol. 10 No. 2, p. 204-205
     
    Received: Nov 3, 1969


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doi:10.2135/cropsci1970.0011183X001000020028x

A Possible Source of Cytoplasmic Male Sterility in Intermediate Wheat-Grass, Agropyron Intermedium (Host) Beauv1

  1. Jurgen Schulz-Schaeffer2

Abstract

Abstract

Amphidiploid Triticum durum Desf. × Agropyron intermedium (Host) Beauv. and T. durum × A. trichophorum (Link) Richt. hybrids were backcrossed twice A. intermedium and A. trichophorum. A pronounced increase in male sterility was observed in the series from the amphidiploid (AD) to the first and second substitution backcross generations (SB1 and SB2). Male sterility estimates averaged 53.4% in the AD, 83.6% in the SB1 and 96.8% in the SB2. Approximately 69% of all SB2 plants were 99 to 100% male sterile.

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