土培条件下玉米萌发期耐旱鉴评技术体系研究

张春宵,李淑芳,刘旭洋,刘杰,刘文平,刘学岩,李春辉,王天宇,李晓辉

Establishment of Evaluation System for Drought Tolerance at Maize Germination Stage Under Soil Stress

ZHANG ChunXiao,LI ShuFang,LIU XuYang,LIU Jie,LIU WenPing,LIU XueYan,LI ChunHui,WANG TianYu,LI XiaoHui

表3 GW50胁迫强度和非胁迫对照下32份品种的萌发相关性状变异分析

Table 3 Trait variation of 32 hybrids under mean GW50 and normal water treatment

处理 Treatments 性状 Traits 最小值 Minimum 最大值 Maximum 平均 Average 变异系数 CV 正常对照 Normal 种子发芽率GR (%) 96.00 100.00 99.44 1.28 胚芽鲜重GFW (g) 0.20 0.60 0.40 26.09 胚芽干重GDW (g) 0.02 0.06 0.04 27.55 胚芽长GL (cm) 6.74 16.76 11.98 19.19 胚根鲜重RFW (g) 0.09 0.42 0.24 40.80 胚根干重RDW (g) 0.01 0.04 0.03 28.92 胚根长RL (cm) 4.34 17.67 13.35 22.70 胚根数RN 3.05 6.45 4.48 17.53 种子鲜重SFW (g) 0.26 0.52 0.38 15.42 种子干重SDW (g) 0.13 0.28 0.19 20.36 贮藏物质转运率SMTR (%) 10.54 40.08 24.51 28.66 50%萌发率土壤含水量胁迫处理 GW50 treatment 种子发芽率GR (%) 19.00 92.00 59.88 26.75 胚芽鲜重GFW (g) 0.03 0.16 0.08 38.70 胚芽干重GDW (g) 0.00 0.03 0.01 44.61 胚芽长GL (cm) 1.13 5.10 2.67 35.36 胚根鲜重RFW (g) 0.03 0.17 0.09 38.22 胚根干重RDW (g) 0.01 0.03 0.01 35.60 胚根长RL (cm) 4.22 11.71 8.80 19.74 胚根数RN 2.60 6.00 3.84 19.70 种子鲜重SFW (g) 0.25 0.50 0.40 13.69 种子干重SDW (g) 0.18 0.32 0.25 12.87 贮藏物质转运率SMTR (%) 4.68 16.63 8.45 34.00 耐旱系数 DTC 种子发芽率GR (%) 19.79 92.00 60.17 26.60 胚芽鲜重GFW (g) 7.59 44.62 20.13 38.43 胚芽干重GDW (g) 13.91 86.85 29.18 48.08 胚芽长GL (cm) 10.89 59.34 22.82 40.00 胚根鲜重RFW (g) 21.17 84.64 39.46 34.75 胚根干重RDW (g) 23.20 105.61 50.99 32.28 胚根长RL (cm) 44.01 97.30 67.84 18.74 胚根数RN 59.77 129.51 86.26 15.00 种子鲜重SFW (g) 73.13 121.74 104.55 9.68 种子干重SDW (g) 100.03 167.96 130.07 12.11 贮藏物质转运率SMTR (%) 21.42 71.08 35.87 32.66