Preliminary estimates of genetic parameters and familial selection for non-native poplars show good potential for genetic gains on growth, cold hardiness, trunk quality and Sphaerulina musiva susceptibility

• DOI: 10.1007/s11295-023-01625-7
• Publication Date: 2023-10-19T22:01:20Z
• Authors: Guillaume Otis-Pr...; Josianne DeBlois; Martin Perron
• Keywords: Hardiness (plants); Populus trichocarpa; Genetic gain; Genetic correlation; Tree breeding; Salicaceae

Abstract Genetic parameters for growth, trunk quality, and susceptibility to frost Sphaerulina musiva attack were estimated from 34 half-sib families of hybrid poplar the crossing non-native parents, Populus maximowiczii A. Henry, trichocarpa Torr. & Gray, 3 6 years after planting. The use spatial analysis proved be best method quantitative growth data. proportion among-family variance total (phenotypic) as well high heritabilities Spaherulina showed a potential selection these traits while quality under low genetic control. Some gains several traits, suggesting possibility developing index obtain superior that show gain not only but adaptive well. Type B correlations high, responded in same way regardless site. High type A correlation between at early potential, although relationships should confirmed with future measurements evaluate this effect maturity. These results can integrated into strategy improving parental populations and, longer term, will make it possible optimize individuals interest operational deployment clones.