Maturing seeds were collected from fifty-year-old trees of Fraxinus mandshurica. The cotyledon and hypocotyl zygotic embryos were excised and cultured on 1/2MS media to induce somatic embryos. In cytological study of ...
Influencing factors to seed dormancy and germination characteristics of Sorbus pohuashanensis were studied. These factors included the morphological development of embryos,the mechanical obstruction of the seed coat,t...