Table of Contents

I. Foreword .............................................................................................................................1

II. Announcements ...................................................................................................................3

III. Report of Soybean Genetics Committee ..............................................................................4

IV. Research Notes from Contributors ......................................................................................6

        New Pigments in Soybean Seedcoats. B. H. Taylor and C. E. Caviness .............................6

        Soybean Breeding in Austria.  R. Gretzmacher and L. Tanasch ..........................................7

        Soybean Linkage and Allelism Tests. R. I. Buzzell ...........................................................11

        Determinate-Dt₂ Effects on Soybean Characteristics. R. I. Buzzell,
        B. R. Buttery and D. A. Littlejohns ..................................................................................14

        Soybean Gene Resources Recently Received from China. R. I. Buzzell,
        B. R. Buttery, L. J. Anderson, D. A. Littlejohns and J. G. R. Loiselle ................................17

        Genetic Studies of Soybean Host Cultivar Interactions with Rhizobium Strains.
        T. E. Devine ....................................................................................................................19

        Vegetative Propagation of Soybeans. J. S. Plaskowitz and T. E. Devine .............................21

        Evidence of a Second Gene Controlling a Short Internode (Zigzag Stem) Character.
        H. R. Boenna and C. G. Jones ..........................................................................................22

        Forage Value of Soybean Plants. J. J. Faix, C. J. Kaiser and F. C. Hinds ...........................23

        Determination of Sugar Content of Individual Soybean Seeds. S. J. Openshaw,
        T. Hymowitz and H. H. Hadley ..........................................................................................25

        Inheritance of a Second SBTL-A₂ Variant in Seed Protein of Soybeans.
        J. H. Orf and T. Hymowitz .................................................................................................26

        The Gene Symbols Sp₁ and Sp₁^b Assigned to Larsen and Caldwell's Seed Protein
        Bands A and B.  J. H. Orf and T. Hymowitz .......................................................................27

        Glycine Germplasm Resources. T. Hymowitz ......................................................................29

        Inheritance in Chlorophyll Deficient Mutants. C. R. Nissly, R. L. Berriard and C. N. Hittle ...31

        Polyploids Among the Progeny from Male Sterile (ms₁ms_l) Soybeans. R. G. Palmer
        and H. E. Heer .................................................................................................................35

        Trisomic Linkage Tests. R. G. Palmer ...............................................................................36

        Linkage Studies with a Chromosomal Interchange. R. G. Palmer ........................................38

        Environmental Influence on Total Pollen Grains per Flower from Normal and
        Sterile Plants of the Urbana Male Sterile. M. C. Albertsen and R. G. Palmer ......................39

        Soybean Dwarf Virus Disease. Y. Tanimura and Y. Mori ...................................................41

        Evaluation of Commercial Soybean Cultivars for Leaf Feeding Resistance to
        Heliothis zea. J. M. Joshi and J. G. Wutoh ..........................................................................43

        Seed Yield Efficiency in Soybeans. J. M. Joshi and P. E. Smith ...........................................46

        Heat Injury Tests as a Screening Tool for Heat Tolerance in Soybeans. J. R. Martineau,
        J. E. Specht and J. H. Williams ..........................................................................................49

        Stomatal Frequency and Heat and Drought Stress in Soybeans. J. R. Martineau,
        J. H. Williams and J. E. Specht ..........................................................................................51

        Multiple Resistance to Insects. S. Anand ............................................................................53

        Cotyledon Culture. J. F. Thompson and J. T. Madison .......................................................55

        Progress in Obtaining Soybean Haploids 2n=20. E. T. Bingham, W. D. Beversdorf
        and G. L. Cutter ................................................................................................................55

        Histology of the Embryo Sac of Male Sterile ms₁ms_l Soybeans. G. L. Cutter and
        E. T. Bingham ....................................................................................................................56

V. Index of Contributors ............................................................................................................57

VI. Genetics Stocks Available ....................................................................................................59

VII. Recent Soybean Genetics and Breeding Publications ...........................................................72

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