加州山松的种子发芽十分困难,美国林务局的研究人员HOFF研究出一种诱导沙藏过的种子发芽的方法。做法是沿种子一侧切去一薄片藏种皮、膜和配子体组织。由种子胚根一端切下1/16英寸。结果另一端切口导致不正常发芽,即子叶经由切口一端出现。切削时,切口必须切穿种皮与配子体之间的膜,含于珠被细胞内层的薄膜,看来是限制和阻碍这类休眠芽的关键结构. 用加州山松种子所做的试验表明,培育 Seed germination of Pinus armandi is very difficult, and HOFF researcher HOFF has developed a method to induce the germination of sand-covered seeds. The practice is to cut a thin piece of seed hide, membrane and gametophyte tissue along the side of the seed. Cut 1/16 inch from the end of the seed radicle. As a result, the other incision led to abnormal germination, ie the cotyledon appeared through the incision. The cut must cut through the membrane between the seed coat and the gametophyte, and the membrane contained within the inner layer of the bead, appears to be the key structure that limits and blocks such dormant buds. Experiments with California pine seeds show that Cultivation