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5 不同耐低Fe玉米品种性状

Table 5 Traits of different low iron-tolerant maize varieties

类别 Class 品种 Varieties PH SD VL UL LA SPAD RL TRL RTN RSA RAD RV RDW SDW PDW R/S FeAA RFeA FePE AFeC Fe高效 NFe ZH2 40.4a 6.2a 6a 4a 195.6a 43.3ab 27.0bc 2 121.2a 4 607.7a 412.1a 0.6bcd 6.4a 0.4ab - 2.0a - 2.3a 0.2efg - 1.1a - 2.9b 2.1fg -31.3a HD999 36.5b 6.2a 6a 4a 187.8a 39.7bcde 27.7abc 1 973.7a 3 787.0ab 405.3a 0.7bc 6.6a 0.4a - 1.7b - 2.2a 0.3cd - 1.0b - 2.3c 2.2fg -23.8ab QY9 42.3a 5.6a 6a 4a 165.6ab 41.7abcd 22.3de 1 275.2cde 3 077.3bc 257.4c 0.6bc 4.1cd 0.3d - 1.3cd - 1.6c 0.2fg - 1.0b - 3.7a 1.6g -22.9abc 平均Average 39.7A 6.0A 6A 4A 183.0A 41.6A 25.7B 1 790.0A 3 824.0A 358.3A 0.6A 5.7A 0.4A - 1.7A - 2.0A 0.2B - 1.0A - 3.0A 1.9C -26.0A 变异系数CV (%) 7.4 5.4 0 0 8.5 4.3 11.4 25.3 20.0 24.4 2.4 23.9 24.7 20.3 20.5 13.3 - 9.6 24.8 16.4 -17.6 LFe ZH2 40.9a 5.6a 6a 4a 158.9ab 42.3abc 31.7a 1 587.6b 3 043.0bc 307.4b 0.6bcd 4.8bc 0.3c - 1.6b - 1.9bc 0.2fg - 0.3d - 1.0d 6.2a -21.6abc HD999 35.3bc 5.0b 5c 3c 159.1ab 39.1cde 22.3de 1 498.6bcd 2 260.0cd 318.2b 0.7abc 5.4b 0.4b - 1.4c - 1.7cd 0.3bc - 0.4cd - 1.1d 4.4b -24.7ab QY9 42.3a 5.1b 5c 3.7b 171.1a 38.9cde 23.8cd 1 055.7ef 2 385.0c 206.3de 0.6bcd 3.2ef 0.2de - 1.2de - 1.4de 0.2fg - 0.5c - 2.0c 3.0def -13.9c 平均Average 39.5A 5.2B 5.3B 3.6A 163.0B 40.1A 25.9B 1 380.6B 2 562.7C 277.3B 0.6A 4.5B 0.3B - 1.4A - 1.7B 0.2B - 0.4B - 1.4C 4.5A -20.1BC 变异系数CV (%) 9.4 6.0 -10.8 -14.3 4.3 4.8 19.5 20.6 16.4 22.3 5.0 25.2 23.3 16.1 -15.4 23.6 19.4 -40.8 34.5 -27.6 低Fe效应(%) -0.5 -13.3 -11.7 -10.0 -10.9 -3.6 0.7 -22.9 -32.9 -22.6 0.0 -20.1 -25.0 -17.6 -15.0 0.0 -60.0 -53.3 136.8 -22.7 Fe低效 NFe CD455 36.1b 5.3ab 5.7ab 3c 166.4a 44.0a 28.4abc 1 548.6bc 2 954.3bc 257.9c 0.5d 3.4de 0.2e - 1.0e - 1.2e 0.2efg - 0.4cd - 2.1c 2.9cde -25.6ab CD189 32.6cd 4.8b 5c 3c 128.5bc 38.1de 30.1ab 1 215.4def 3 068.3bc 220.6cd 0.6cd 3.2ef 0.2de - 1.0e - 1.2e 0.2def - 0.5c - 2.1c 2.6efg -17.8bc CD30 31.2d 4.0c 5.3bc 3c 97.7cd 36.8e 26.0bcd 930.3f 2 393.3c 169.5ef 0.6cd 2.5fg 0.1fg - 0.8f - 1.0f 0.2g - 0.5c - 3.2ab 2.1fg -24.8ab 平均Average 33.3B 4.7B 5.3B 3B 130.9C 39.6A 28.2A 1 231.5C 2 805.3B 216.0C 0.6A 3.0C 0.2C - 0.9B - 1.1C 0.2B - 0.5B - 2.5B 2.5B -22.7B 变异系数CV (%) 7.5 -13.5 6.3 0 26.3 9.7 7.4 25.1 12.9 20.5 5.1 16.6 22.9 -13.3 14.4 10.0 - 4.4 26.2 15.4 -19.0 LFe CD455 23.7ef 4.0c 4.3d 3c 85.6de 12.3g 11.2g 563.0g 953.3e 118.6g 0.7abc 2.0g 0.1fg - 0.4g - 0.6g 0.3b - 0.2e - 1.2d 3.8bcd -19.3bc CD189 20.7f 3.7cd 4d 2d 51.3e 9.3g 14.1fg 629.2g 1 525.0de 131.8fg 0.7ab 2.2g 0.2f - 0.4g - 0.6g 0.4a - 0.1e - 0.8d 4.2bc -21.2abc CD30 26.0e 3.4d 5c 3c 60.9de 24.6f 17.8ef 530.5g 882.3e 128.2fg 0.8a 2.5fg 0.1g - 0.5g - 0.6g 0.2de - 0.1e - 1.2d 4.5b -16.3bc 平均Average 23.5C 3.7C 4.4C 2.7B 65.9D 15.4B 14.4C 574.2D 1 120.2D 126.2D 0.7A 2.3D 0.1D - 0.4C - 0.6D 0.3A - 0.1C - 1.1C 4.2A -18.9C 变异系数CV (%) 11.3 8.1 11.5 21.7 26.8 52.7 22.8 8.8 31.5 5.4 7.5 11.8 18.9 -10.3 - 3.5 28.6 - 8.5 19.6 8.9 -13.0 低Fe效应(%) -29.4 -21.3 -17.0 -10.0 -49.7 -61.1 -48.9 -53.4 -60.1 -41.6 16.7 -23.3 -50.0 -55.6 -45.5 50.0 -80.0 -56.0 68.0 -16.7