Heritability of grain yield plant height and test weight of a population of winter wheat triticum aestivum adapted to southwestern ontario canada
Theoretical and Applied Genetics 68(1-2): 21-23
ISSN/ISBN: 0040-5752 Accession: 005563843
Grain yield, plant height and test weight were studied in a population of winter wheat. The population consisted of F2 bulk populations of 42 crosses among 11 genotypes adapted to southwestern, Ontario. Heritabilities were: 0.30 .+-. 0.32 for yield, 0.77 .+-. 0.15 for height and 0.98 .+-. 0.08 for test weight. Predicted genetic gain with 10% selection intensity was 0.15 t/ha for yield, 10.1 cm for height and 3.00 kg/hl for test weight. The low heritability for yield indicates that effective selection would require pedigree information and progeny tests, while the high heritabilities for height and test weight indicate that selection for these traits using single plots would be appropriate.