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Heritability of Metribuzin Tolerance in Sweet Potatoes (Ipomoea batatas)

Published online by Cambridge University Press:  12 June 2017

Howard F. Harrison Jr. ,
Alfred Jones  and
Philip D. Dukes
Howard F. Harrison Jr.
Affiliation:
U.S. Dep. Agric. Agric. Res. Serv., U.S. Vegetable Lab., Charleston, SC
Alfred Jones
Affiliation:
U.S. Dep. Agric. Agric. Res. Serv., U.S. Vegetable Lab., Charleston, SC
Philip D. Dukes
Affiliation:
U.S. Dep. Agric. Agric. Res. Serv., U.S. Vegetable Lab., Charleston, SC
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Abstract

Twenty-two sweet potato [Ipomoea batatas (L.) Lam.] clones with a wide range in metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] tolerance were used to establish narrow sense heritability estimates (h2) using a greenhouse procedure. The heritability estimates were obtained from simple linear regressions (h2 = 2b) of injury rating, shoot fresh weight, and change in shoot fresh weight of offspring against the same responses of parents at metribuzin concentrations of 0, 0.3, and 0.6 ppm in the potting medium and averaged data for the two concentrations. These values ranged from 0.85 to 1.0, indicating that a recurrent mass selection process should be an appropriate approach to developing metribuzin-tolerant cultivars. Several highly tolerant clones were identified.

Keywords

Herbicide tolerancegeneticsplant breeding
Type
Special Topics
Information
Weed Science , Volume 35 , Issue 5 , September 1987 , pp. 715 - 719
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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