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Published in Crop Sci 13:503-504 (1973)
© 1973 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Influence of Temperature on a Partially Male-Sterile Soybean Strain1

C. E. Caviness and B. L. Fagala2

Temperature during flowering and pod set influenced degree of sterility in a partially male-sterile soybean strain [Glycine max (L.) Merr.]. Growth chambers, set for 14.5/ 9.5, light/dark sequences in each 24-hour period, were used to present varying day/night temperatures to the growing plants. No pods were set on the male-sterile strain when the day temperature was 35C and the night temperature was either 21 or 27C. Plants were partially fertile, however, when grown 'at a day temperature of either 21 or 29C with a night temperature of 16 or 21C. The largest number of pods was produced on the partially male-sterile strain when the day temperature was 29C followed by a night temperature of 21C. Temperature did not affect number of seeds per pod on the partially male-sterile strain at temperature regimes where pods were formed.

Key Words: Glycine max • Temperature sensitivity • Pod set

1 Published with the approval of the Director of the Arkansas Agricultural Experiment Station. Some of the data were taken from a thesis submitted by the junior author to the University of Arkansas in partial fulfillment of the requirements for the M.S. degree.

2 Professor and former Graduate Assistant (now Assistant County Agent, Crittenden County, Arkansas), Department of Agronomy, University of Arkansas.

Received for publication April 13, 1973.


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M.B. Smith, H.T. Horner, and R.G. Palmer
Temperature and Photoperiod Effects on Sterility in a Cytoplasmic Male-Sterile Soybean
Crop Sci., May 1, 2001; 41(3): 702 - 704.
[Abstract] [Full Text] [PDF]


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