Littlejohns and Tanner (1976) have used soybean gennination at low temperature (l0°C) as a criterion for selecting for "cold tolerance". It is our contention that this coupled with a more definitive vigor test might prove to be more reliable in evaluating genotypic differences at low germination temperature. The most prominent soybean vigor tests have been classified into five major categories by McDonald (1976): (1) cold test, (2) accelerated aging test, (3) tetrazolium test, (4) respiration test, and (5) conductivity test.
Duke, Stanley H.; Schrader, Larry E.; Miller, Marna Geyer; and Henson, Cynthia A.
"Research notes: Potential soybean vigor tests for screening at low gennination
Soybean Genetics Newsletter: Vol. 5
, Article 35.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol5/iss1/35