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披碱草属4个牧草品种苗期抗寒性综合评价

来源：花匠小妙招时间：2025-05-02 18:05

图 1 供试材料苗期图片

Figure 1. Seedling stage images of the test materials

图 2 低温胁迫对披碱草属4个牧草品种抗氧化酶活性的影响

不同大写字母表示同一温度下不同材料间差异显著(P < 0.05)，不同小写字母表示同一材料不同温度处理间差异显著(P < 0.05)。DM代表同德短芒披碱草，LMM代表同德老芒麦，F代表‘陇中1号’肥披碱草，CS代表甘南垂穗披碱草，下图同。

Figure 2. Effects of low-temperature stress on antioxidant enzyme activities of four Elymus species

Different capital letters indicate significant differences among different materials for the same temperature at the 0.05 level, different lowercase letters indicate significant differences among different treatment for the same material at the 0.05 level, DM represents Elymus breviaristatus ‘Tongde’，LMM represents Elymus sibiricus ‘Tongde’, F represents Elymus excelsus ‘Longzhong No. 1’ and CS represents Elymus nutans ‘Gannan’. This is applicable for the following figures as well.

图 3 低温胁迫对披碱草属4个牧草品种渗透调节物质的影响

Figure 3. Effects of low-temperature stress on osmotic adjustment substances of four Elymus species

图 4 低温胁迫对披碱草属4个牧草品种MDA的影响

Figure 4. Effects of low temperature stress on MDA of four Elymus species

图 5 低温胁迫对披碱草属4个牧草品种REC的影响

Figure 5. Effects of low-temperature stress on REC of four Elymus species

图 6 低温胁迫对披碱草属4个牧草品种叶绿素含量的影响

Figure 6. Effects of low-temperature stress on chlorophyll content of four Elymus species

图 7 低温胁迫对披碱草属4个牧草品种光和气体交换参数的影响

Figure 7. Effects of low-temperature stress on photosynthetic characteristics of four Elymus species

图 8 低温胁迫对披碱草属4个牧草品种叶绿素荧光参数的影响

Figure 8. Effects of low-temperature stress on chlorophyll fluorescence parameters of four Elymus species

表 1 供试材料信息

Table 1 Information on test materials

种质编号
Germplasm code 种质名称
Germplasm name 供种单位
Seed supply unit DM 同德短芒披碱草
Elymus breviaristatus ‘Tongde’ 青海大学
Qinhai University LMM 同德老芒麦
Elymus sibiricus ‘Tongde’ 青海大学
Qinhai University F ‘陇中1号’肥披碱草
Elymus excelsus ‘Longzhong No. 1’ 中国农业科学院兰州畜牧与兽药研究所
Lanzhou Institute of Husbandry and Pharmaceutical Sciences,
Chinese Academy of Agricultural Sciences CS 甘南垂穗披碱草
Elymus nutans ‘Gannan’ 甘肃省玛曲县草原站
Grassland Station of Maqu County, Gansu Province

表 2 低温胁迫下披碱草属4个牧草品种的评价指标相对隶属值和综合评价值

Table 2 Relative subordinate value and comprehensive evaluation value of evaluation indexes of four Elymus varieties under low-temperature stress

指标
Index 10 ℃ 5 ℃ 0 ℃ DM LMM F CS 权重
Weight DM LMM F CS 权重
Weight DM LMM F CS 权重
Weight SOD 0.56 0.00 0.57 1.00 0.130 0.63 1.00 0.00 0.14 0.129 0.18 1.00 0.00 0.57 0.162 POD 0.02 1.00 0.00 0.33 0.143 0.16 1.00 0.00 0.32 0.096 0.00 1.00 0.23 0.54 0.073 CAT 0.64 1.00 0.00 0.35 0.043 0.72 1.00 0.00 0.67 0.029 0.65 1.00 0.00 0.78 0.072 MDA 0.93 0.00 1.00 0.94 0.051 0.38 0.38 0.00 1.00 0.051 0.46 0.00 0.18 1.00 0.043 REC 1.00 0.09 0.51 0.00 0.074 1.00 0.00 0.94 0.46 0.082 0.23 0.30 0.00 1.00 0.064 SS 0.46 0.00 1.00 0.73 0.053 0.31 0.00 1.00 0.58 0.061 0.40 0.00 1.00 0.40 0.043 Pro 0.30 0.00 1.00 0.06 0.067 0.40 0.00 1.00 0.21 0.054 0.44 0.00 1.00 0.26 0.061 Pn 1.00 0.49 0.00 0.73 0.044 0.00 1.00 0.00 0.89 0.036 0.17 1.00 0.00 0.35 0.050 Tr 0.56 1.00 0.00 0.35 0.040 0.00 1.00 0.03 0.41 0.050 0.00 1.00 0.29 0.47 0.057 Gs 0.24 0.80 0.00 1.00 0.068 0.17 0.86 0.00 1.00 0.102 0.19 0.94 0.00 1.00 0.094 Chl 0.67 0.91 0.00 1.00 0.093 0.95 1.00 0.17 0.00 0.201 0.95 0.91 1.00 0.00 0.099 Fv/Fm 0.00 0.98 1.00 1.00 0.005 0.47 1.00 0.48 0.00 0.018 0.86 1.00 0.74 0.00 0.017 Fv/Fo 0.00 1.00 0.23 0.09 0.021 1.00 1.00 0.43 0.00 0.060 1.00 0.68 0.47 0.00 0.054 ΦPSⅡ 0.23 1.00 0.65 0.00 0.052 0.79 1.00 0.93 0.00 0.062 0.72 1.00 0.74 0.00 0.055 ETR 1.00 0.00 0.08 0.16 0.052 1.00 0.16 0.08 0.00 0.062 1.00 0.00 0.39 0.40 0.055 NPQ 1.00 0.35 0.46 0.00 0.033 1.00 0.98 0.39 0.00 0.034 1.00 0.41 0.00 0.94 0.046 qP 0.00 0.98 1.00 0.59 0.044 0.20 0.98 1.00 0.00 0.045 0.17 0.99 1.00 0.00 0.041 评分 Score 0.51 0.62 0.39 0.53 0.69 0.86 0.35 0.38 0.59 0.87 0.38 0.43 排名 Rank 3 1 4 2 2 1 4 3 2 1 4 3 　SOD：超氧化物歧化酶；POD：过氧化物酶；CAT：过氧化氢酶；MDA：丙二醛；REC：相对电导率；SS：可溶性糖；Pro：脯氨酸；Pn：净光合速率；Tr：蒸腾速率；Gs：气孔导度；Chl：叶绿素；Fv/Fm：PSⅡ最大光化学效率；Fv/Fo：PSⅡ潜在活性；ΦPSⅡ：实际光能转化效率；ETR：PSⅡ光合电子传递速率；NPQ：非光化学猝灭系数；qP：光化学猝灭系数。
SOD: superoxide dismutase; POD: Peroxidase; CAT: catalase; MDA: malondialdehydem; REC: relative electrical; SS: soluble sugar; Pro: proline; Pn: net photosynthesis rate; Tr: transpiration rate; Gs: stomatal conductance; Chl: chlorophyll; Fv/Fm: maximumphotochemical efficiency of PSⅡ; Fv/Fo: potential activity of PSⅡ; ΦPSⅡ: actual light energy conversion efficiency; ETR: photosynthetic electron transport rate; NPQ: non-photochemical quenching coefficient; qP: photochemical quenching coefficient. SOD: superoxide dismutase; POD: peroxidase; CAT: catalase; MDA: malondialdehydem; REC: relative electrical; SS: soluble sugar; Pro: proline; Pn: net photosynthesis rate; Tr: transpiration rate; Gs: stomatal conductance; Chl: chlorophyll; Fv/Fm: maximumphotochemical efficiency of PSⅡ; Fv/Fo: potential activity of PSⅡ; ΦPSⅡ: actual light energy conversion efficiency; ETR: photosynthetic electron transport rate; NPQ: non-photochemical quenching coefficient; qP: photochemical quenching coefficient. [1] 郭子武, 李宪利, 高东升, 段成国. 植物低温胁迫响应的生化与分子生物学机制研究进展. 中国生态农业学报, 2004, 12(2): 59-62.

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