播种至苗期不同阶段低温对玉米幼苗生长及生理抗性的影响

菅立群, 张翼飞, 杨克军, 王玉凤, 陈天宇, 张继卫, 张津松, 李庆, 刘天昊, 肖珊珊, 彭程, 王宝生

Effects of Low Temperature under Different Phases between Sowing and Seedling Periods on Growth and Physiological Resistance of Maize Seedlings

Jian Liqun, Zhang Yifei, Yang Kejun, Wang Yufeng, Chen Tianyu, Zhang Jiwei, Zhang Jinsong, Li Qing, Liu Tianhao, Xiao Shanshan, Peng Cheng, Wang Baosheng

表2 不同阶段低温处理和低温持续时间对玉米幼苗形态指标及生物量积累的影响

Table 2 Effects of low temperature treatment phases and durations on morphological parameters and biomass accumulations of maize seedlings

处理 Treatment 株高 Plant height (cm) 茎基部直径 Diameter for basal part of stem (cm) 叶面积 Leaf area (cm2) 胚芽鞘长 Coleoptile length (cm) 初生胚根长 Primary radicle length (cm) 植株鲜重 Plant fresh weight (g) 植株干重 Plant dry weight (g) 贮藏物质转运率 Storage substance transportation ratio (%) P1D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P1D1 16.89ab 0.335ab 23.87b 1.96bcde 12.73b 1.42ab 0.161ab 59.0ab P1D2 16.62abc 0.327abcd 22.15cde 1.97bcde 11.77c 1.36abcde 0.151abc 57.5abc P1D3 16.48abcd 0.326abcd 21.02cdefghi 1.97bcde 11.48cd 1.30abcdef 0.15abc 54.3abcd P1D4 16.33abcd 0.326abcd 19.90ghij 1.98abcde 10.63defghi 1.27abcdef 0.145abcd 53.7abcd P1D5 16.08bcde 0.318bcdefgh 19.59hijk 1.99abcde 9.79hijklm 1.22abcdefgh 0.138bcde 52.9abcde P2D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P2D1 16.33abcd 0.329abc 22.43bcd 1.96bcde 11.64cdef 1.42ab 0.163abc 55.9abc P2D2 16.28abcd 0.325abcde 21.33cdefgh 1.97bcde 11.23cdefg 1.31abcdef 0.155abcd 52.5abcde P2D3 16.24abcd 0.322abcdef 20.69defghi 1.98bcde 10.78fghijk 1.23abcdefgh 0.145abcd 52.3abcde P2D4 15.96bcde 0.321abcdefg 20.24fghij 1.98abcde 10.13hijklm 1.18bcdefgh 0.135bcde 50.7bcdef P2D5 15.61bcdefg 0.320bcdefg 19.32ijkl 2.00abcde 9.98mn 1.15cdefghi 0.121bcde 50.7bcdef P3D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P3D1 16.28abcd 0.302cdefghi 22.09cdef 2.01abcde 11.6cd 1.38abcd 0.151ab 56.7abc P3D2 15.97bcde 0.302cdefghi 21.07cdefghi 2.02abcde 11.31cde 1.24abcdefg 0.147abcd 52.9abcde P3D3 15.78bcdef 0.290hi 20.41efghi 2.04abcde 10.91cdefgh 1.20bcdefgh 0.143bcde 51.2abcdef P3D4 15.71bcdefg 0.290hi 19.89ghij 2.08abcde 9.96fghijk 1.15cdefghi 0.139bcde 50.1cdef P3D5 15.27defg 0.288i 19.31ijkl 2.10abcd 8.90fghijk 1.12defghi 0.136bcdef 49.3cdef P4D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P4D1 14.90efgh 0.296fghi 18.54jkl 2.05abcde 10.43efghij 1.21bcdefgh 0.147abcd 54.6abcd P4D2 13.90hijk 0.293ghi 16.81mn 2.09abcde 9.90ghijkl 1.05fghij 0.138bcde 50.1cdef P4D3 13.43ijk 0.290i 15.60nop 2.11abc 9.68ijklm 0.98hijk 0.122cdef 45.8defg P4D4 13.27jk 0.288i 15.05op 2.13ab 9.32klm 0.87jk 0.106ef 44.6efg P4D5 12.78k 0.280i 14.15p 2.19a 8.25n 0.79k 0.099f 39.5g P5D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P5D1 16.09bcde 0.324abcdef 21.10cdefghi 1.90cde 11.22cde 1.29abcdef 0.163ab 57.0abc P5D2 15.54cdefg 0.307bcdefghi 20.69defghi 1.91cde 9.85hijkl 1.24abcdefg 0.144abcd 56.6abc P5D3 14.47ghij 0.305cdefghi 19.93ghij 1.92bcde 9.47jklm 1.17bcdefgh 0.137bcde 49.3cdef P5D4 13.84hijk 0.303cdefghi 17.67lm 1.93bcde 9.29klm 0.99ghijk 0.114def 44.3efg P5D5 13.65ijk 0.300defgji 16.47mno 1.94bcde 8.94lmn 0.92ijk 0.113def 43.3fg P6D0 17.48a 0.348a 27.25a 1.89e 14.26a 1.47a 0.177a 59.6a P6D1 15.51cdefg 0.321abcdef 22.81bc 1.92de 10.97cd 1.38abc 0.161ab 57.0abc P6D2 15.42cdefg 0.318bcdefgh 21.63cdefg 1.88bcde 10.87cde 1.29abcdef 0.143abc 53.9abcd P6D3 14.89efgh 0.297efghi 21.04cdefghi 1.93bcde 10.14cdef 1.15cdefghi 0.137abcd 52.1abcde P6D4 14.55fghi 0.297efghi 19.67hijk 1.93bcde 9.78fghijk 1.15cdefghi 0.133bcde 51.8abcdef P6D5 14.48ghij 0.290i 17.90klm 1.95bcde 8.79lmn 1.12efghi 0.128cdef 49.9cdef F值F-value P 19.76** 13.89** 50.70** 6.16** 18.77** 5.89** 2.74 3.31** D 27.20** 27.67** 216.98** 3.55* 200.51** 15.04** 17.73** 12.17** P×D 1.21 0.80 2.71** 0.31 1.48 0.39 0.39 0.46