干旱胁迫对转<i>PtPIP2;8</i>基因84K杨苗木光合、生长和根系结构的影响

干旱胁迫对转PtPIP2;8基因84K杨苗木光合、生长和根系结构的影响

刘丽燕, 冯锦霞, 刘文鑫, 万贤崇

Effects of drought stress on photosynthesis, growth and root structure of transgenic PtPIP2;8 poplar 84K (Populus alba × P. glandulosa)

LIU Li-Yan, FENG Jin-Xia, LIU Wen-Xin, WAN Xian-Chong

表2 正常水分条件下84K杨转基因和野生型植株生物量变化(平均值±标准偏差)

Table 2 The change of biomass of transgenic and wildtype poplar 84K under normal water condition (mean ± SD)

株系 Line	基径 Basal diameter (mm)	苗高 Height (cm)	根冠比 Root-shoot ratio	叶面积 Leaf area (cm²)	比叶面积 Specific leaf area (cm²·g^-1)
抑制表达 RNAi-silence	4.93 ± 0.26^c	71.60 ± 4.57^b	0.54 ± 0.05^a	534.35 ± 32.47^b	254.33 ± 14.32^a
野生型 Wildtype	5.62 ± 0.43^a	82.55 ± 4.70^a	0.50 ± 0.03^b	565.23 ± 25.05^a	262.57 ± 20.49^a
超表达 Overexpression	5.02 ± 0.46^bc	83.85 ± 4.99^a	0.32 ± 0.02c	576.75 ± 13.31^a	240.61 ± 11.19^a