贵州苏铁开花结实生物学特性研究  

Study on the Biological Characteristics of Blooming and Seeding of Cycas guizhouensis Lan et R. F. Zou

作　　者：刘兰 黄小柱 潘德权 罗在柒 

机构地区：[1]贵州省林业科学研究院,贵州贵阳550005 [2]贵州省林业学校,贵州修文550201

出　　处：《贵州林业科技》2014年第3期44-47,共4页Guizhou Forestry Science and Technology

基　　金：贵州省科技厅科学技术基金项目:贵州苏铁传粉与结实特性研究(黔科合J字[2012]2223号)

摘　　要：通过观测不同野生居群贵州苏铁种子开花频次、结实特性以及人工辅助授粉等试验,结果为：（1）贵州苏铁雄性植株基本为连年开花;雌株为隔年开花,少数为连年开花或3~4年开花;（2）自然状态下贵州苏铁单株平均结实量119.4粒,结实率为65.78%。（3）人工辅助授粉能有效提高结实率和结实量,结实率达到86.8%,比对照提高21.08%;平均结实量达399.3粒。研究结果能反映贵州苏铁开花种实特性,人工辅助授粉对有效保护物种资源和提高种群数量等提供基础数据。The flowering frequency and seeding characteristics of different wild populations of Cycas guizhouen- s/s were investigated, and the artificial pollination experiment was conducted. The results showed as follows： 1） the adult male plants blooms almost annually, while the female mainly blooms every other year and some blooms annually or blooms for an interval of 3 -gyears; 2） in the natural environment, an individual plant bears an average of 119.4 seeds with seed setting rate of 65.78% ; 3） artificial pollination can efficiently increase the amount of seeds （aver- age 399.3 seeds） and the seed setting rate reaches 86. 8% （ higher than that of control by 21.08% ） .

关 键 词：开花频次 结实量 结实率 人工辅助授粉 贵州苏铁 

分 类 号：S791.241[农业科学—林木遗传育种]