A Study on Seedling Breeding and Cuttage Reproduction of Michelia chapensis

Tests of seedling breeding and cuttage reproduction of Michelia chapensis were conducted at Shaowu city during 1993—2001.Four types of seedling breeding were adopted: densely sowing in greenhouse and transplanting,hill seeding,drilling,and throwing.Densely sowing in greenhouse and transplanting was the best,for it produced 225 000 1-year-old seedlings of 90.13 cm in height and 0.85 cm in ground diameter.Hill seeding and drilling were good but the latter better in production.Throwing produced large volume of seedlings but the quality of seedlings was poor.So throwing was rejected in production.Cuttage at the top(T),Middle(M) and base of twigs(B) were tested separately in cuttage reproduction.The rooting rates were 85%(T),63%(M) and 18%(B).In growth increment,T>M>B.The transplanting rates were all above 90% and had little variation among them.The 1-year-old seedlings of T were 156.2 cm in height and 1.32 cm in ground diameter.Therefore cuttage at the top was the best.