油料植物琴叶风吹楠种子萌发观察

Observation on Seed Germination of Horsfieldia pandurifolia

琴叶风吹楠(Horsfieldia pandurifolia)幼苗属于子叶留土类型。成熟种子的主要成分是胚乳,胚极小,位于种子基部;胚根先突破位于种子基部的发芽孔形成主根,然后上胚轴开始生长,子叶向胚乳组织延伸以吸收营养物质;少数种子具多胚现象;只要播种方法正确,容易获得生长正常的苗木,否则容易导致苗木畸形。

Horstieldia pandurifolia, which belongs to myristicaceae, is a kind of arbor species. Its ripe seed has large endosperm and very small embryo. The cotyledons would extend into the tissue of endosperm for absorbing nutrients in embryo. Most of seeds would germinate into normal seedlings under the right sowing.