[Kinetic developmental genetics analysis of Hibiscus cannabinus plant height and stem diameter]

By using quantitative traits additive-dominance genetics model and developmental genetics model, this paper analyzed the developmental behaviors of gene expression for Hibiscus cannabinu plant height and stem diameter at its different growth stages. The results showed that at different growth stages, the unconditional and conditional genetics effects of plant height all showed dominance, while the additive effect was weak. No additive effect was found for stem diameter, but dominance effect was significant at each growth stage. Plant height and stem diameter all had active gene expression from July 28 to August 9, and from September 2 to September 14. There was no additive correlation between plant height and stem diameter, but positive dominance correlation was significant after August 21. The unconditional and conditional genetics effects of plant height and stem diameter were not completely the same. According to practice, conditional genetic analysis could indicate the gene expression more truly in the whole growth period. The ecological and genetics variation patterns of Hibiscus cannabinus plant height and stem diameter at different space-time growth stages implied by our research was of significance in Hibiscus cannabinus genetics and breeding in both theory and practice.