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Genetics of Seed Abortion and Reproductive Traits in Soybean

^a Dep. of Botany and Range Sci., Brigham Young Univ., Provo, UT 84602
^b Dep. of Biology, Univ. of Utah, Salt Lake City, UT 84112
^c Dep. of Agronomy and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108

View larger version (64K): [in a new window]   Fig. 1. Examples of the four developmental stages of soybean ovule abortion scored (i.e., stages of development at which growth ceased). The four general stages of embryo abortion are based on the classification of Kato (1964). The first, (none) characterized by a basal visible ovule or pro-embryo; the second (early) is a later stage of development characterized by a more advanced growth of the pro-embryo; the third (partial) occurs just after cotyledon differentiation; the fourth (late) may contain 80% of seed dry weight, protein, and fat, and is characterized by a wrinkled appearance.

View larger version (24K): [in a new window]   Fig. 2. Relationships between seed/ovule, seeds/pods or ovules/pod for soybean segregants within the Minsoy-Noir 1 recombinant inbred population. Values are shown for Utah (•), Minnesota () and the parental cultivars.