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This article in CS

  1. Vol. 29 No. 4, p. 895-898
     
    Received: June 16, 1988
    Published: July, 1989


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doi:10.2135/cropsci1989.0011183X002900040010x

Sprouting Damage and Kernel Color Relationships in Durum Wheat

  1. J. F. Soper,
  2. R. G. Cantrell  and
  3. J. W. Dick
  1. D ep. of Soybean Breeding, Pioneer Hi-Bred Int., Redwood Falls, MN 56283 (formerly at North Dakota State Univ.)
    D ep. of Agronomy, North Dakota State Univ.
    D ep. of Cereal Science and Food Technology, North Dakota State Univ., Fargo, ND 58105

Abstract

Abstract

Sprout damage resulting from rainfall prior to harvest is a serious quality problem in durum wheat ( Triticum turgidum L. vat. durum). Field experiments were conducted in Fargo and Langdon, ND during 1984 and 1985 to determine if random intermating would reduce the association between red kernel color and preharvest dormancy in populations derived from the hybridization of amber-seeded ‘Vic’ and PD44. The line PD44 possesseseed dormancy and red kernel color inherited from a Canadian experimental hard red spring wheat (T. aestivum L. em. Theli) line, RIAI37. Seed dormancy was assessed by visually rating sprouting within intact spikes in a rainsimulation chamber, and by indirectiy measuring a-amylase activity in the sprouted grain. The simple phenotypic correlations of kernel color and dormancy parameters were significant (r = 0.28–0.67) and relatively unchanged by one or two cycles of random intermating. The genetic variability for dormancy was also similar for 0, 1, and 2 intermating cycles. The relationship between red kernel color and strong preharvest dormancy is either due to pleiotropy or extremely tight genetic linkage. Thus the use of red-seeded germplasm as a source of dormancy for amber-seeded durum wheat germplasm is of questionable value.

Contribution from the North Dakota Agric. Exp. Stn. Journal Paper no. 1724. Research partly supported by the North Dakota State Wheat Commission and National Pasta Assoc., was from the thesis of the senior author in partial fulfillment of Ph.D. degree requirements at North Dakota State Univ.

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Copyright © 1989. Crop Science Society of America, Inc.Copyright © 1989 by the Crop Science Society of America, Inc.