A comparison of the histone content of inbred maize lines and their heterotic hybrid progeny during development
Ulrich, V.; Kaczmarczyk, W.; Chang, C.M.
Proceedings of the West Virginia Academy of Science 49(1): 13
ISSN/ISBN: 0096-4263 Accession: 000269806
Seedlings of M14 X 187 and its reciprocal exhibited heterosis for plumule length at all developmental stages, the maternal effect being highly significant. Friedman's multisample test indicated that the rank order of the histone/DNA mass ratio for four genotypes was consistent for three developmental stages. Long-plumule genotypes such as M14 and two hybrids (including reciprocals) contained less histone than inbred 187. Heterosis for plumule length could not be attributed entirely to the decrease in histone content in hybrids, since 187 X M14 had a greater mean plumule length than the long-plumule inbred M14 but had a higher histone/DNA ratio.