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Manifestations of Heterosis in Grain Sorghum

Published online by Cambridge University Press:  03 October 2008

A. E. Kambal  and
E. H. Abu-El-Gasim
A. E. Kambal
Affiliation:
Faculty of Agriculture, Shambat, Sudan
E. H. Abu-El-Gasim
Affiliation:
Faculty of Agriculture, Shambat, Sudan
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Summary

The magnitude of heterosis for 15 characters was studied in ten sorghum hybrids, produced by crossing ten restorer varieties with male-sterile Combine Kafir 60 as a common female parent. The most evident expressions of heterosis were higher yield and increased vegetative growth, often associated with delay in flowering. The increase in yield of the hybrids over their superior parents, ranging from 35 to 238%, resulted mainly from an increase in number of grains per head, rather than from an increase in the weight of individual grains. The regressions of hybrids on male parents, and the correlations of yield with other characters were studied, and the prospects of producing adapted hybrids for the Sudan are briefly discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 12 , Issue 1 , January 1976 , pp. 33 - 42
Copyright
Copyright © Cambridge University Press 1976

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