Nanism in Slash X Shortleaf Pine Hybrids

Key Points

• Dwarf incidence among hybrids was higher than previous reports for gymnosperms, indicating a potential genetic anomaly.
• Many identified dwarfs were mixoploid, suggesting complex genetic interactions influencing nanism.
• Observational analysis in southern Mississippi assessed the incidence among planned hybrids in tree testing.
• Findings may highlight the need for further genetic investigations on slash and shortleaf pine hybrids.