精品文献
尖叶卤蕨
叶菜型甘薯蔓尖产量构成分析(英文)
叶菜型甘薯蔓尖产量构成分析(英文)
Total yields of vine tip of seven varieties of Leaf-vegetable sweetpotato during 2006-2007 were investigated; proportions of the weights of leaf, leaf stalk and stem in total vine tip yield and their changes among varieties and during topping stages were studied. The results showed that vine tip yields of sweetpotato were significantly different among either varieties or topping stages; leaf yield accounted for about 51% of total vine yield, and changes in leaf yield among topping stages were higher than that among varieties; while yields of leaf stalk and stem each accounted for 25% of total vine tip yield, their changes among varieties were higher than those among topping stages. These results revealed the yield composition of vine tip of Leaf-vegetable sweetpotato, which provided scientific references for breeding and cultivating new Leaf-vegetable sweetpotato variety and its industrialization.
假瘤蕨属(水龙骨科)植物叶片附属结构的生态意义
假瘤蕨属(水龙骨科)植物叶片附属结构的生态意义
电镜下观察并研究了假瘤蕨属植物的叶片附属结构.报道了蜡质颗粒、片层、柔毛和鳞片.叶片附属结构在数量及性质上的差别显示出种类与环境的适应性不同.结果表明,假瘤蕨属植物中土生的种类具有较多的蜡质颗粒、柔毛及鳞片,而附生的种类具有较多的颗粒及片层,这些叶片特征均与亚热带常绿阔叶林的生态环境相适应.