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Specific gravity of tubers in relation to productivity of some sweet potato genotypes

Published online by Cambridge University Press:  27 March 2009

P. K. Ray ,
S. Mishra  and
S. S. Mishra
P. K. Ray
Affiliation:
Department of Horticulture, Rajendra Agricultural University, Campus. Dholi-843121, Muzaffarpur, Bihar State, India
S. Mishra
Affiliation:
Department of Horticulture, Rajendra Agricultural University, Campus. Dholi-843121, Muzaffarpur, Bihar State, India
S. S. Mishra
Affiliation:
Department of Horticulture, Rajendra Agricultural University, Campus. Dholi-843121, Muzaffarpur, Bihar State, India
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Extract

In the recent past, specific gravity of tubers has been considered an easy means of estimating yield potential of sweet potato cultivars (Bryant, 1979) and their quality characters like starch value and dry-matter content (Ishikawa & Sakai, 1973). Bryant (1979) separated sweet potato tubers with low and high specific gravity at planting time by determining whether or not they floated in water, and observed that the floaters gave 20% higher yield than the sinkers. As this simple test claimed to hold promise for selecting higher-yielding sweet potato genotypes, it was decided to scan its usefulness at the College of Agriculture, Dholi, where a large collection of sweet potato germ plasm is being maintained for research needs.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 103 , Issue 2 , October 1984 , pp. 475 - 476
Copyright
Copyright © Cambridge University Press 1984

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References

REFERENCES

Bryant, C. W. (1979). Test for selecting sweet potato. Georgia Journal of Science 37 (2), 91.Google Scholar
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Haynes, P. & Wholey, D. W. (1971). Variability in commercial sweet potatoes (Ipomoea batatas L.) Trinidad. Experimental Agriculture 7 (1), 27–32.Google Scholar
Ishikawa, H. & Sakai, K. (1973). Studies on a simple method for determination of starch content in the tuberous roots of sweet potato. Journal of the Central Agricultural Experiment Station, Japan 19, 167–181.Google Scholar