摘要
首次报道了苔藓类植物的能量生殖配置情况。在尖叶拟船藓(Dolichomitriopsis diversiformis)种群整个生长周期中,各器官热值由大到小顺序为:雌器苞(9305.1J/g)〉成熟孢子体(9196.1J/g)〉配子体(4075.6~6558.6J/g)。能量配置比例的顺序为:配子体〉孢子体〉雌器苞。配子体生长所分配的能量占绝对优势,成熟孢子体的能量配置仅为3.2%。实验结果表明:尖叶拟船叶藓生殖器官(雌器苞和孢子体)的能量配置较低,但具有较高的热值,生殖期需要消耗较多的能量。
This is the first report on energy allocation patterns in the bryophytes. During the life cycle of Dolichomitriopsis diversiformis, energy value in different plant organs followed the order: Perichaetium (9305. 1 J/g) 〉 Sporophyte (9196. 1 J/g) 〉 Gametophyte (from 4075.6 to 6558.6 J/g). Energy alloca- tion to gametophyte accounted for the most proportion, while the energy allocation to mature sporophyte was only 3.2 %. The energy allocation followed the order: Gametophyte 〉 Sporophyte 〉 Aperichaetium. The results showed:energy allocation to the reproductive organ (perichaetium or sporophyte) was low while with high energy values and the reproductive process of Dolichomitriopsis cliversiformis needed a lot of energy.
出处
《武汉植物学研究》
CSCD
北大核心
2008年第4期424-427,共4页
Journal of Wuhan Botanical Research
基金
国家自然科学基金资助项目(30470181)
关键词
尖叶拟船叶藓
热值
能量配置
Dolichomitriopsis cliversiformis
Energy value
Energy allocation