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This article in CS

  1. Vol. 11 No. 4, p. 564-566
     
    Received: Jan 25, 1971
    Published: July, 1971


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doi:10.2135/cropsci1971.0011183X001100040032x

Inheritance of a Male-Sterile Character in Soybeans

  1. C. A. Brim and
  2. M. F. Young2

Abstract

Abstract

The inheritam:e of a male-sterile character in soybeans, Glycine max (L.) Merrill, was investigated in the F1, F2, and F3 generations. Sterility was a result of nonfunctioning pollen. Male-sterile plants, although indistinguishable from fertile plants until the onset of maturity, remain green past usual maturity, have thick, leathery leaves, and have only a few, fleshy, one-seeded pods. The proportion of fertile to male-sterile plants in segregating populations indicated that the character is inherited as a single recessive gene pair. Plants were classified as male-sterile on the basis of pollen viability or plant morpho.logy. The genetic symbols ms,ms were proposed for the male-sterile character. In a natural crossing block, 99% of the seed obtained from malesterile plants were the result of cross-pollination. Low seed set and the lack of genetic markers for distinguishing male-sterile iplants before flowering restrict the use of this character in exploiting heterosis in the species.

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