Abstract | Changes in morphological characteristics and biomass allocation of Fritillaria unibracteata P. K. Hsiao et K. C. Hsia under conditions of shading and applying nitrogen were studied. The results show that leaf area, specific leaf area, specific root length, ratio of dry weight of above-ground part to that of under-ground part (R1 ), ratio of dry weight of leaf to that of root (R2 ) and ratio of dry weight of leaf to that of whole plant (R4 ) of F. unibracteata under condition of shading have extremely significant differences with those of the control (P<0. 01), but root surface area and ratio of dry weight of root to that of whole plant ( R3 ) have no significant differences with those of the control. Under condition of applying nitrogen, specific leaf area and R4 have extremely significant differences with those of the control, R1 has significant difference with that of the control ( P<0. 05), but leaf area, root surface area, specific root length, R2 and R3 have no significant differences with those of the control. Comprehensive analysis result shows that treatments of shading and applying nitrogen have some effects on morphological characteristics and biomass allocation of F. unibracteata, but response of root to shading and applying nitrogen are weaker than those of leaf. |
关键词 | 暗紫贝母; 遮光; 施氮; 生物量分配; 形态特征 |
Key words | Fritillaria unibracteata P. K. Hsiao et K. C. Hsia; shading; applying nitrogen; biomass allocation; morphological characteristics |
作者 | 郭海霞1,2, 徐波2, 石福孙2, 吴彦2 |
所在单位 | 1. 成都师范学院, 四川 成都 611130; 2. 中国科学院成都生物研究所 生态恢复与生物多样性保育四川省重点实验室, 四川 成都 610041 |
点击量 | 14916 |
下载次数 | 1034 |
基金项目 | 四川省教育厅自然科学重点项目(16ZA0366); 国家科学技术部国际合作项目(2013DFR90670) |