Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 March 1958
Published in Agron J 50:169-170 (1958)
© 1958 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Number of Chloroplasts in the Guard Cells of Inbred Lines of Tetraploid and Diploid Sugar Beets1

John W. Dudley2

Synopsis: The average number of chloroplasts per guard cell was 11.8 ± 0.11 for tetraploid and 6.6 ± 0.11 for diploid inbred lines of sugar beets. These results indicated that diploids and tetraploids could be rapidly and accurately separated by counting chloroplasts in the guard cells.

1 Report of a study made by the Crops Research Division, A.R.S., U.S.D.A. in cooperation with the Agronomy Section, Colorado Agricultural Experiment Station, The Beet Sugar Development Foundation, and The Great Western Sugar Company. This paper has been approved for publication by the Station Director as Scientific Series Article No. 517.

2 Geneticist, Crops Research Division, A.R.S., U.S.D.A.

Received for publication August 12, 1957.


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Environmental Quality		 The Plant Genome
Copyright © 1958 by the American Society of Agronomy.