The effect of different alleles on the growth of sorghum hybrids
1948
Quinby, J.R. | Karper, R.E.
There are sorghum varieties that differ from one another in only one allele that affects maturity. Such pairs of varieties are Texas and Sooner Milos, Hegari and Early Hegari, and Kalo and Early Kalo. These pairs of varieties were crossed to a third variety and the F1 plants were grown and observed for height, duration of growth, tillering, and for yield of grain and stover. All hybrids produced greater yields of grain and stover than the parents. Hybrids that differed in only one allele, in most cases, produced different yields of grain and stover. The alleles that differentiate theMilo, Hegari, and Kalo pairs of varieties differ in combining ability. In one case, reccessive ma4 from Kalo in combination with Kafir produced 37% more grain than dominant Ma4 from Early Kalo. It is apparent from these results that, in sorghum, one allele can have a great influence on the combining ability of a strain.
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