Estimation on the Genetic Parameters of Parent-offspring Clone(Populus deltoides‘Shan Hai Guan’×P. suaveolens Fisch)

A factorial crossing design with 7 males(P.suaveolens Fisch.of the same provenance)and 1 female(P.deltoideg‘Shan Hai Guan’)was made.Observations are concerned with phenology,growth and branch angle. The results showed there was a significant variability among most of the traits of the parents,families or cloned full-sides;but this variability was greater among parents than among families. In a broad sense,heritabilities were generally high and significant for all types of traits. Significant values were found among phenology traits,growth traits and between phenology and growth traits.