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(一)直观法:观察种子厚实、饱满、均匀度和颜色.通常优良种子籽粒饱满,表皮有光泽,种胚致蜜而富有弹性,颜色明亮。如杉种灰褐或赤褐,胚乳暗白有油光或稍带粉红色.松种灰褐或淡棕,马尾松种胚和胚乳白色,有松脂气味。而掠青采集的种子一般籽粒不饱满,种皮色泽淡,胚和胚乳发育不完全,瘦弱.隔年的陈种种皮老化而无光泽,胚、胚乳呈黄褐色,即使色泽正常也干枯无弹性,撮搓呈粉状,手感无油性。(二)切开法:取备检种子50—
(I) Intuitive method: Observing the seed is thick, full, evenness and color, usually good seed full of seeds, epidermis luster, embryo honey and flexible, bright colors. As a kind of gray brown or brown red, endosperm dark white shiny or slightly pink. Gray-brown or light brown pine, Pinus massoniana seed embryo and endosperm white, with turpentine odor. The grazing Qinghai collected seeds generally not full grain, seed coat color light, embryo and endosperm development is not complete, emaciated .Annual Chen seed coat aging without matte, embryo, endosperm was brown, even if the normal color is dry and inelastic, Pin rubbing was powder, feel no oil. (B) cut method: take prepared seized 50-