玉米幼苗响应低铁胁迫的根系形态与干物质积累特征

任云, 刘静, 李哲馨, 李强

Root Morphology and Dry Matter Accumulation of Maize Seedlings in Response to Low Iron Stress

Ren Yun, Liu Jing, Li Zhexin, Li Qiang

表4 玉米品种物质积累与Fe吸收利用差异

Table 4 Differences of matter accumulation and Fe absorption and utilization in maize varieties

聚类 Clustering 品种 Variety 单株干重 Total dry weight per plant (g) 根冠比 Root-shoot ratio 单株Fe积累量 Fe accumulation amount per plant (mg) 根系Fe吸收效率 Root Fe absorption efficiency (mg/g) Fe生理效率 Fe physiological efficiency (kg/mg) 单株活性Fe含量 Active Fe accumulation amount per plant (mg) NFe LFe NFe LFe NFe LFe NFe LFe NFe LFe NFe LFe 1 ZH505 0.87a 0.56b 0.31a 0.27b 0.86a 0.12b 4.10a 1.00b 1.01a 4.67b 15.82a 19.04a JH158 1.06a 0.79b 0.28a 0.28a 0.41a 0.23b 1.78a 1.35b 2.59a 3.43b 17.24a 24.09b FY1 0.96a 0.68b 0.21a 0.20a 0.56a 0.13b 3.29a 1.18b 1.71a 5.23b 18.19a 29.32b ZH2 2.34a 1.91b 0.20a 0.19a 1.14a 0.31b 2.92a 1.03b 2.05a 6.16b 31.30a 21.65b KM918 1.02a 0.74b 0.29a 0.32b 0.80a 0.24b 3.48a 1.33b 1.28a 3.08b 21.05a 16.63a ZT1 0.92a 0.90a 0.37a 0.32b 0.50a 0.19b 2.00a 0.86b 1.84a 4.74b 20.97a 17.69a HNY8 1.19a 1.02b 0.27a 0.26b 0.63a 0.23b 2.52a 1.10b 1.89a 4.43b 21.35a 22.57a ZD808 1.37a 1.10b 0.23a 0.24b 0.55a 0.21b 2.12a 0.95b 2.49a 5.24b 19.53a 25.67b 平均Average 1.21C 0.96D 0.27C 0.26CD 0.68C 0.21F 2.74B 1.07D 1.79F 4.67A 20.18AB -22.66AB 变化Change (%) -20.66 -3.70 -69.12 -60.95 160.62 12.29 2 DF998 1.15a 0.81b 0.28a 0.28a 0.93a 0.22b 3.72a 1.22b 1.24a 3.68b 17.52a 23.91b HD999 2.15a 1.72b 0.25a 0.28b 0.97a 0.39b 2.26a 1.05b 2.22a 4.41b 23.78a 24.70a DY18 1.74a 1.20b 0.30a 0.26b 1.01a 0.29b 2.53a 1.16b 1.72a 4.14b 19.59a 15.88a YF311 1.54a 1.10b 0.32a 0.28b 0.73a 0.26b 1.92a 1.08b 2.11a 4.23b 27.86a 21.96a ZD619 1.61a 1.19b 0.28a 0.25b 0.79a 0.23b 2.26a 0.96b 2.04a 5.17b 23.30a 21.06a DH605 1.25a 0.95b 0.27a 0.24b 0.70a 0.22b 2.59a 1.16b 1.79a 4.32b 19.95a 25.91b QY9 1.55a 1.40a 0.20a 0.19a 0.97a 0.46b 3.73a 2.00b 1.60a 3.04b 22.99a 13.93b 平均Average 1.57A 1.20C 0.27C 0.25CD 0.87B 0.30E 2.61B 1.24D 1.80F 4.04B 22.00AB 20.93AB 变化Change (%) -23.57 -7.41 -65.52 -52.49 123.73 -4.86 3 BS2 0.94a 0.50b 0.25a 0.41b 0.30a 0.11b 1.58a 0.73b 3.13a 4.55b 22.87a 17.24a CD418 1.38a 0.76b 0.25a 0.34b 0.88a 0.16b 3.14a 0.84b 1.57a 4.75b 16.73a 16.36a QC99 1.40a 0.81b 0.23a 0.26b 0.69a 0.27b 2.65a 1.59b 2.03a 3. 00b 40.09a 17.76b CD30 0.95a 0.59b 0.18a 0.24b 0.45a 0.13b 3.21a 1.18b 2.11a 4.54b 24.82a 16.30b CY19 1.13a 0.73b 0.24a 0.28b 0.64a 0.16b 2.91a 1.00b 1.77a 4.56b 26.22a 19.34b 平均Average 1.19C 0.68E 0.23E 0.31B 0.59D 0.16F 2.70B 1.04D 2.01EF 4.15B 26.14A 17.45B 变化Change (%) -42.86 34.78 -72.88 -61.48 106.01 -33.24 4 BY1 1.62a 0.92b 0.25a 0.21b 1.2a 0.43b 4.00a 2.69b 1.35a 2.14b 20.92a 18.49a HS9528 1.85a 1.31b 0.33a 0.32a 1.35a 0.29b 2.93a 0.91b 1.37a 4.52b 17.21a 21.66a SAU1210 1.74a 1.33b 0.21a 0.21a 1.27a 0.77b 4.23a 3.35b 1.37a 1.73b 15.88a 19.09a ZH212 1.49a 1.06b 0.25a 0.24a 0.97a 0.14b 3.34a 0.67b 1.54a 7.57b 22.63a 25.43a FD2 1.03a 0.55b 0.29a 0.32b 0.82a 0.19b 3.57a 1.46b 1.26a 2.89b 22.38a 18.86a ZH102 1.48a 0.8b 0.18a 0.21b 0.84a 0.13b 3.82a 0.93b 1.76a 6.15b 24.64a 24.77a 平均Average 1.54A 0.99D 0.25D 0.25CD 1.07A 0.33E 3.58A 1.64C 1.43G 3.06D 20.61AB 21.37AB 变化Change (%) -35.71 0.00 -69.16 -54.19 113.91 3.69 5 CD455 1.24a 0.57b 0.20a 0.30b 0.43a 0.15b 2.05a 1.15b 2.88a 3.80b 25.61a 19.28b ZH311 1.63a 0.55b 0.19a 0.32b 0.54a 0.11b 2.16a 0.85b 3.02a 5. 00b 26.22a 19.95b XY508 1.28a 0.88b 0.21a 0.30b 0.48a 0.18b 2.18a 0.90b 2.67a 4.89b 20.99a 38.47b ZH211 1.69a 0.81b 0.22a 0.26b 0.79a 0.20b 2.55a 1.18b 2.14a 4.05b 16.73a 19.22a CD189 1.23a 0.55b 0.22a 0.42b 0.47a 0.13b 2.14a 0.81b 2.62a 4.23b 17.76a 21.17b MD118 1.20a 0.78b 0.22a 0.46b 0.70a 0.36b 3.18a 1.44b 1.71a 2.17b 22.69a 17.61a 平均Average 1.40B 0.71E 0.21F 0.34A 0.60D 0.20F 2.54B 1.14D 2.34E 3.63C 20.87AB 23.36AB 变化Change (%) -49.29 61.90 -66.67 -55.12 55.13 11.93