草业学报 ›› 2021, Vol. 30 ›› Issue (3): 137-157.DOI: 10.11686/cyxb2020416
收稿日期:
2020-09-14
修回日期:
2020-10-26
出版日期:
2021-03-20
发布日期:
2021-03-09
通讯作者:
李春杰
作者简介:
Corresponding author. E-mail: chunjie@lzu.edu.cn基金资助:
Ya-qi CHEN(), Kai-qi SU, Tai-xiang CHEN, Chun-jie LI()
Received:
2020-09-14
Revised:
2020-10-26
Online:
2021-03-20
Published:
2021-03-09
Contact:
Chun-jie LI
摘要:
针对西北盐碱地区栽培土壤资源有限问题,研究混合盐碱胁迫对醉马草种子萌发及幼苗生理相关酶特性的影响,旨在探讨与揭示醉马草对盐碱土壤环境的适应机制,为西北盐碱地区的耐盐草种的选育及栽培提供理论基础。为模拟西北地区复杂的盐碱环境,本研究将中性盐(NaCl、Na2SO4)和碱性盐(NaHCO3、Na2CO3)按不同比例混合(A: NaCl∶Na2SO4=1∶1; B: NaCl∶Na2SO4∶ NaHCO3=1∶2∶1; C: NaCl∶Na2SO4∶NaHCO3∶Na2CO3=1∶9∶9∶1; D: NaCl∶Na2SO4∶NaHCO3∶Na2CO3=1∶1∶1∶1; E: NaCl∶Na2SO4∶NaHCO3∶Na2CO3=9∶1∶1∶9),并设置50、100、150、200 mmol·L-14个盐浓度梯度对带菌(E+)和不带菌(E-)醉马草种子萌发和幼苗生长阶段进行胁迫,分析盐胁迫下醉马草种子萌发阶段的发芽率、发芽势、发芽指数、活力指数、平均发芽时间及幼苗生长阶段的苗长、胚根长度、根冠比、抗氧化酶(POD、SOD、CAT)活性、丙二醛 (MDA)和脯氨酸(proline)含量。并通过隶属函数和主成分分析对不同盐胁迫下的醉马草耐盐性进行综合评价。结果表明:5种盐碱胁迫均使醉马草发芽率、发芽势、发芽指数、活力指数降低及平均发芽时间延长,且随盐浓度的增加,种子萌发受到显著抑制(P<0.05);盐碱胁迫亦随盐浓度的增加使醉马草胚根长度、根冠比显著降低。除C、E处理外,其余混合盐碱胁迫下的醉马草幼苗生理指标(POD、SOD、MDA、proline)均随盐浓度的上升而下降。隶属函数和主成分分析显示不同混合盐碱胁迫下的醉马草耐盐性大小顺序为A>D>B>C>E。综上可知,盐碱胁迫显著抑制醉马草种子萌发和幼苗生长(P<0.05),其中碱性盐(NaHCO3、Na2CO3),尤以Na2CO3对醉马草种子萌发和幼苗生长抑制作用强于中性盐。活力指数、胚根长度、POD、SOD、proline为评价醉马草耐盐性的主要指标。E+醉马草耐盐性优于E-,内生真菌可有效提高醉马草渗透调节和活性氧清除能力,降低膜脂过氧化作用,提高醉马草耐盐性。
陈雅琦, 苏楷淇, 陈泰祥, 李春杰. 混合盐碱胁迫对醉马草种子萌发及幼苗生理特性的影响[J]. 草业学报, 2021, 30(3): 137-157.
Ya-qi CHEN, Kai-qi SU, Tai-xiang CHEN, Chun-jie LI. Effects of complex saline-alkali stress on seed germination and seedling physiological characteristics of Achnatherum inebrians[J]. Acta Prataculturae Sinica, 2021, 30(3): 137-157.
采样地 Sites | 经纬度 Longitude and latitude | 海拔 Altitude (m) | 草原湿润度指数 Grassland and moisture index (K) |
---|---|---|---|
夏河县Xiahe City | 102°33′ E,35°11′ N | 2896 | 2.00 |
表1 采样地自然气象条件
Table 1 The meteorological condition of sites
采样地 Sites | 经纬度 Longitude and latitude | 海拔 Altitude (m) | 草原湿润度指数 Grassland and moisture index (K) |
---|---|---|---|
夏河县Xiahe City | 102°33′ E,35°11′ N | 2896 | 2.00 |
处理 Treatments | 盐碱组分及摩尔比例Salt composition and molar ratio | pH | ||||||
---|---|---|---|---|---|---|---|---|
NaCl | Na2SO4 | NaHCO3 | Na2CO3 | 50 mmol·L-1 | 100 mmol·L-1 | 150 mmol·L-1 | 200 mmol·L-1 | |
CK | 0 | 0 | 0 | 0 | 7.0 | 7.0 | 7.0 | 7.0 |
A | 1 | 1 | 0 | 0 | 7.2 | 7.3 | 7.6 | 7.6 |
B | 1 | 2 | 1 | 0 | 8.7 | 8.7 | 8.9 | 9.0 |
C | 1 | 9 | 9 | 1 | 9.0 | 9.1 | 9.1 | 9.2 |
D | 1 | 1 | 1 | 1 | 9.6 | 9.6 | 9.6 | 9.8 |
E | 9 | 1 | 1 | 9 | 10.3 | 10.4 | 10.4 | 10.5 |
表2 各处理盐碱组分和摩尔比例及pH值
Table 2 Salts composition, molar ratio and pH value of mixed saline-alkali treatment
处理 Treatments | 盐碱组分及摩尔比例Salt composition and molar ratio | pH | ||||||
---|---|---|---|---|---|---|---|---|
NaCl | Na2SO4 | NaHCO3 | Na2CO3 | 50 mmol·L-1 | 100 mmol·L-1 | 150 mmol·L-1 | 200 mmol·L-1 | |
CK | 0 | 0 | 0 | 0 | 7.0 | 7.0 | 7.0 | 7.0 |
A | 1 | 1 | 0 | 0 | 7.2 | 7.3 | 7.6 | 7.6 |
B | 1 | 2 | 1 | 0 | 8.7 | 8.7 | 8.9 | 9.0 |
C | 1 | 9 | 9 | 1 | 9.0 | 9.1 | 9.1 | 9.2 |
D | 1 | 1 | 1 | 1 | 9.6 | 9.6 | 9.6 | 9.8 |
E | 9 | 1 | 1 | 9 | 10.3 | 10.4 | 10.4 | 10.5 |
混合盐碱处理 Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 发芽率 Germination rate (%) | 发芽势 Germination energy | ||
---|---|---|---|---|---|
E+ | E- | E+ | E- | ||
CK | 0 | 0.75±0.05abcde | 0.87±0.03a | 0.62±0.10ab | 0.75±0.00a |
A | 50 | 0.82±0.03ab | 0.77±0.03abcd | 0.72±0.10a | 0.67±0.10ab |
100 | 0.63±0.14defg | 0.68±0.08bcdef | 0.45±0.00cde | 0.65±0.10ab | |
150 | 0.62±0.03efg | 0.35±0.23ijk | 0.32±0.03efg | 0.30±0.20efgh | |
200 | 0.38±0.03hij | 0.35±0.00ijk | 0.27±0.03fghi | 0.25±0.09fghij | |
B | 50 | 0.78±0.03abc | 0.75±0.05abcde | 0.52±0.06bcd | 0.65±0.05ab |
100 | 0.37±0.08ijk | 0.35±0.10ijk | 0.22±0.15ghijk | 0.32±0.10defg | |
150 | 0.18±0.15lmn | 0.23±0.15klm | 0.17±0.13ghijkl | 0.20±0.13ghijk | |
200 | 0.08±0.06nop | 0.18±0.06lmn | 0.08±0.06klm | 0.18±0.06ghijkl | |
C | 50 | 0.67±0.03cdef | 0.47±0.06ghi | 0.55±0.10bc | 0.45±0.09cde |
100 | 0.17±0.03lmn | 0.33±0.03ijk | 0.15±0.05hijklm | 0.27±0.03fghi | |
150 | 0.13±0.03lmnop | 0.15±0.05lmno | 0.10±0.05jklm | 0.15±0.05hijklm | |
200 | 0.05±0.09nop | 0.05±0.05nop | 0.05±0.09lm | 0.03±0.06lm | |
D | 50 | 0.60±0.05fg | 0.42±0.03hi | 0.57±0.06bc | 0.43±0.03cde |
100 | 0.52±0.10gh | 0.38±0.06hij | 0.45±0.05cde | 0.30±0.09efgh | |
150 | 0.42±0.10hi | 0.27±0.06jkl | 0.38±0.08def | 0.27±0.06fghi | |
200 | 0.10±0.00mnop | 0.02±0.03op | 0.10±0.00jklm | 0.07±0.12klm | |
E | 50 | 0.25±0.05jkl | 0.13±0.08lmnop | 0.18±0.08ghijkl | 0.13±0.08ijklm |
100 | 0.07±0.03nop | 0.07±0.08nop | 0.07±0.03klm | 0.07±0.08klm | |
150 | 0.07±0.08nop | 0.07±0.08nop | 0.07±0.08klm | 0.07±0.08klm | |
200 | 0.00±0.00p | 0.00±0.00p | 0.00±0.00m | 0.00±0.00m |
表3 混合盐碱胁迫对种子发芽率和发芽势的影响
Table 3 The effect of complex saline-alkali treatment on seed germination rate and germination energy
混合盐碱处理 Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 发芽率 Germination rate (%) | 发芽势 Germination energy | ||
---|---|---|---|---|---|
E+ | E- | E+ | E- | ||
CK | 0 | 0.75±0.05abcde | 0.87±0.03a | 0.62±0.10ab | 0.75±0.00a |
A | 50 | 0.82±0.03ab | 0.77±0.03abcd | 0.72±0.10a | 0.67±0.10ab |
100 | 0.63±0.14defg | 0.68±0.08bcdef | 0.45±0.00cde | 0.65±0.10ab | |
150 | 0.62±0.03efg | 0.35±0.23ijk | 0.32±0.03efg | 0.30±0.20efgh | |
200 | 0.38±0.03hij | 0.35±0.00ijk | 0.27±0.03fghi | 0.25±0.09fghij | |
B | 50 | 0.78±0.03abc | 0.75±0.05abcde | 0.52±0.06bcd | 0.65±0.05ab |
100 | 0.37±0.08ijk | 0.35±0.10ijk | 0.22±0.15ghijk | 0.32±0.10defg | |
150 | 0.18±0.15lmn | 0.23±0.15klm | 0.17±0.13ghijkl | 0.20±0.13ghijk | |
200 | 0.08±0.06nop | 0.18±0.06lmn | 0.08±0.06klm | 0.18±0.06ghijkl | |
C | 50 | 0.67±0.03cdef | 0.47±0.06ghi | 0.55±0.10bc | 0.45±0.09cde |
100 | 0.17±0.03lmn | 0.33±0.03ijk | 0.15±0.05hijklm | 0.27±0.03fghi | |
150 | 0.13±0.03lmnop | 0.15±0.05lmno | 0.10±0.05jklm | 0.15±0.05hijklm | |
200 | 0.05±0.09nop | 0.05±0.05nop | 0.05±0.09lm | 0.03±0.06lm | |
D | 50 | 0.60±0.05fg | 0.42±0.03hi | 0.57±0.06bc | 0.43±0.03cde |
100 | 0.52±0.10gh | 0.38±0.06hij | 0.45±0.05cde | 0.30±0.09efgh | |
150 | 0.42±0.10hi | 0.27±0.06jkl | 0.38±0.08def | 0.27±0.06fghi | |
200 | 0.10±0.00mnop | 0.02±0.03op | 0.10±0.00jklm | 0.07±0.12klm | |
E | 50 | 0.25±0.05jkl | 0.13±0.08lmnop | 0.18±0.08ghijkl | 0.13±0.08ijklm |
100 | 0.07±0.03nop | 0.07±0.08nop | 0.07±0.03klm | 0.07±0.08klm | |
150 | 0.07±0.08nop | 0.07±0.08nop | 0.07±0.08klm | 0.07±0.08klm | |
200 | 0.00±0.00p | 0.00±0.00p | 0.00±0.00m | 0.00±0.00m |
混合盐碱处理Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 发芽指数 Germination index | 活力指数 Vigor index | ||
---|---|---|---|---|---|
E+ | E- | E+ | E- | ||
CK | 0 | 6.84±0.36bc | 7.46±0.24bc | 30.56±1.82bc | 24.91±5.09cd |
A | 50 | 10.23±1.08a | 10.85±0.51a | 38.67±6.80a | 36.80±0.79ab |
100 | 4.93±1.00d | 7.62±0.43bc | 25.08±4.91cd | 33.77±4.42ab | |
150 | 3.92±0.14defg | 2.82±1.22fghij | 18.15±2.86ef | 8.58±3.51ghij | |
200 | 2.13±0.25hijklmn | 2.28±0.59hijklm | 6.51±0.63hijkl | 7.23±2.01ghijk | |
B | 50 | 6.93±1.72bc | 8.23±0.30b | 35.26±13.81ab | 32.92±2.13ab |
100 | 2.91±1.09fghij | 3.32±0.90efghi | 9.91±3.84gh | 8.75±3.33fghi | |
150 | 2.00±1.46hijklmn | 2.35±1.79ghijkl | 4.79±3.60hijkl | 5.18±4.30hijkl | |
200 | 0.61±0.35mnop | 0.99±0.19mnop | 1.22±0.69kl | 1.65±0.38jkl | |
C | 50 | 6.38±0.89c | 6.59±2.47c | 25.92±5.30cd | 5.89±0.28hijkl |
100 | 1.39±0.22jklmnop | 2.09±0.80hijklmn | 4.37±0.40hijkl | 4.92±2.32hijkl | |
150 | 1.10±0.36klmnop | 1.31±0.54jklmnop | 2.54±0.84ijkl | 2.20±1.60ijkl | |
200 | 0.31±0.53op | 0.23±0.31op | 0.34±0.58kl | 0.31±0.44kl | |
D | 50 | 4.54±1.20de | 3.43±0.36defgh | 13.31±3.80fg | 22.36±8.08de |
100 | 4.36±0.79def | 2.95±0.48fghij | 10.23±2.35gh | 5.37±0.28hijkl | |
150 | 2.66±0.71ghijk | 2.26±0.64hijklm | 3.97±1.39hijkl | 2.78±0.95ijkl | |
200 | 0.80±0.17lmnop | 0.61±1.10mnop | 0.72±0.27kl | 0.61±1.06kl | |
E | 50 | 1.74±0.38ijklmn | 1.53±0.65jklmnop | 3.60±0.84hijkl | 1.43±0.83kl |
100 | 0.47±0.13nop | 0.67±0.76mnop | 0.42±0.09kl | 0.55±0.69kl | |
150 | 0.46±0.62nop | 0.58±0.80nop | 0.53±0.79kl | 0.44±0.64kl | |
200 | 0.00±0.00p | 0.00±0.00p | 0.00±0.00l | 0.00±0.00l |
表4 混合盐碱胁迫对种子发芽指数和活力指数的影响
Table 4 The effect of complex saline-alkali treatment on seed germination index and vigor index
混合盐碱处理Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 发芽指数 Germination index | 活力指数 Vigor index | ||
---|---|---|---|---|---|
E+ | E- | E+ | E- | ||
CK | 0 | 6.84±0.36bc | 7.46±0.24bc | 30.56±1.82bc | 24.91±5.09cd |
A | 50 | 10.23±1.08a | 10.85±0.51a | 38.67±6.80a | 36.80±0.79ab |
100 | 4.93±1.00d | 7.62±0.43bc | 25.08±4.91cd | 33.77±4.42ab | |
150 | 3.92±0.14defg | 2.82±1.22fghij | 18.15±2.86ef | 8.58±3.51ghij | |
200 | 2.13±0.25hijklmn | 2.28±0.59hijklm | 6.51±0.63hijkl | 7.23±2.01ghijk | |
B | 50 | 6.93±1.72bc | 8.23±0.30b | 35.26±13.81ab | 32.92±2.13ab |
100 | 2.91±1.09fghij | 3.32±0.90efghi | 9.91±3.84gh | 8.75±3.33fghi | |
150 | 2.00±1.46hijklmn | 2.35±1.79ghijkl | 4.79±3.60hijkl | 5.18±4.30hijkl | |
200 | 0.61±0.35mnop | 0.99±0.19mnop | 1.22±0.69kl | 1.65±0.38jkl | |
C | 50 | 6.38±0.89c | 6.59±2.47c | 25.92±5.30cd | 5.89±0.28hijkl |
100 | 1.39±0.22jklmnop | 2.09±0.80hijklmn | 4.37±0.40hijkl | 4.92±2.32hijkl | |
150 | 1.10±0.36klmnop | 1.31±0.54jklmnop | 2.54±0.84ijkl | 2.20±1.60ijkl | |
200 | 0.31±0.53op | 0.23±0.31op | 0.34±0.58kl | 0.31±0.44kl | |
D | 50 | 4.54±1.20de | 3.43±0.36defgh | 13.31±3.80fg | 22.36±8.08de |
100 | 4.36±0.79def | 2.95±0.48fghij | 10.23±2.35gh | 5.37±0.28hijkl | |
150 | 2.66±0.71ghijk | 2.26±0.64hijklm | 3.97±1.39hijkl | 2.78±0.95ijkl | |
200 | 0.80±0.17lmnop | 0.61±1.10mnop | 0.72±0.27kl | 0.61±1.06kl | |
E | 50 | 1.74±0.38ijklmn | 1.53±0.65jklmnop | 3.60±0.84hijkl | 1.43±0.83kl |
100 | 0.47±0.13nop | 0.67±0.76mnop | 0.42±0.09kl | 0.55±0.69kl | |
150 | 0.46±0.62nop | 0.58±0.80nop | 0.53±0.79kl | 0.44±0.64kl | |
200 | 0.00±0.00p | 0.00±0.00p | 0.00±0.00l | 0.00±0.00l |
混合盐碱 处理 Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 苗长 The length of seedling (cm) | 胚根长 The length of radicle (cm) | 根冠比 Root-shoot ratio | |||
---|---|---|---|---|---|---|---|
E+ | E- | E+ | E- | E+ | E- | ||
CK | 0 | 4.47±0.15bc | 3.36±0.77ef | 1.68±0.17cd | 1.74±0.50cd | 0.36±0.01bcdef | 0.40±0.03bcd |
A | 50 | 5.30±0.30a | 4.63±0.49b | 2.00±0.56bc | 2.42±0.13a | 0.45±0.17ab | 0.43±0.02abc |
100 | 4.77±0.15b | 4.60±0.30b | 1.87±0.39bc | 2.21±0.11ab | 0.33±0.03bcdefg | 0.42±0.09abc | |
150 | 4.00±0.30cd | 3.17±0.21f | 1.36±0.12defg | 1.64±0.03cde | 0.29±0.07bcdefghi | 0.42±0.02abc | |
200 | 3.07±0.06fg | 3.07±0.12fg | 1.23±0.12fgh | 1.17±0.15fghi | 0.26±0.07cdefghi | 0.41±0.05abc | |
B | 50 | 3.77±0.31de | 3.03±0.06fg | 2.47±0.47a | 1.13±0.06fghij | 0.57±0.16a | 0.39±0.03bcd |
100 | 3.40±0.20ef | 2.60±0.41gh | 1.35±0.03defg | 0.80±0.14ijklm | 0.40±0.07bcd | 0.37±0.05bcde | |
150 | 2.30±0.20hi | 2.14±0.16hij | 1.08±0.28fghij | 0.73±0.05jklmn | 0.25±0.06cdefghi | 0.31±0.06bcdefgh | |
200 | 2.00±0.00ijkl | 1.66±0.12jklm | 0.74±0.24jklmn | 0.66±0.19lmno | 0.25±0.01cdefghi | 0.27±0.13bcdefghi | |
C | 50 | 2.92±0.13fg | 2.14±0.16hij | 1.00±0.00ghijkl | 1.10±0.19fghij | 0.35±0.04bcdef | 0.36±0.10bcdef |
100 | 2.33±0.12hi | 1.69±0.07jklm | 0.95±0.00ghijkl | 0.63±0.08lmno | 0.31±0.04bcdefgh | 0.29±0.09bcdefghi | |
150 | 1.47±0.15lm | 1.21±0.12mn | 0.81±0.16hijklm | 0.36±0.06nopq | 0.25±0.04cdefghi | 0.11±0.15ijkl | |
200 | 0.88±0.20nop | 0.33±0.58pq | 0.41±0.18mnopq | 0.14±0.25pq | 0.16±0.27ghijkl | 0.27±0.02bcdefghi | |
D | 50 | 4.03±0.29cd | 3.40±0.10ef | 1.44±0.01def | 1.44±0.21efg | 0.34±0.02bcdefg | 0.33±0.08bcdefg |
100 | 3.17±0.29f | 2.30±0.26hi | 1.28±0.07efg | 1.01±0.25ghijkl | 0.31±0.02bcdefgh | 0.33±0.03bcdefg | |
150 | 2.31±0.20hi | 1.53±0.55klm | 1.22±0.12fgh | 0.72±0.05klmn | 0.02±0.01kl | 0.28±0.10bcdefghi | |
200 | 0.37±0.64opq | 1.20±1.17mn | 0.33±0.58nopq | 0.71±0.13klmn | 0.72±0.27kl | 0.05±0.09jkl | |
E | 50 | 2.07±0.06hijk | 0.91±0.21no | 0.63±0.06lmno | 0.46±0.14mnop | 0.22±0.01defghij | 0.28±0.13bcdefghi |
100 | 0.91±0.12no | 0.51±0.46opq | 0.33±0.02nopq | 0.27±0.24opq | 0.19±0.05efghij | 0.18±0.17fghijk | |
150 | 0.66±0.62nop | 0.44±0.40opq | 0.15±0.13pq | 0.15±0.13pq | 0.13±0.13hijkl | 0.16±0.15ghijkl | |
200 | 0.00±0.00q | 0.00±0.00q | 0.00±0.00q | 0.00±0.00q | 0.00±0.00l | 0.00±0.00l |
表5 混合盐碱胁迫对幼苗长度、胚根长度和根冠比的影响
Table 5 The effect of complex saline-alkali treatment on the length of seedling, the length of radicle and root-shoot ratio
混合盐碱 处理 Saline-alkali treatment | 浓度 Concentration of saline-alkali (mmol·L-1) | 苗长 The length of seedling (cm) | 胚根长 The length of radicle (cm) | 根冠比 Root-shoot ratio | |||
---|---|---|---|---|---|---|---|
E+ | E- | E+ | E- | E+ | E- | ||
CK | 0 | 4.47±0.15bc | 3.36±0.77ef | 1.68±0.17cd | 1.74±0.50cd | 0.36±0.01bcdef | 0.40±0.03bcd |
A | 50 | 5.30±0.30a | 4.63±0.49b | 2.00±0.56bc | 2.42±0.13a | 0.45±0.17ab | 0.43±0.02abc |
100 | 4.77±0.15b | 4.60±0.30b | 1.87±0.39bc | 2.21±0.11ab | 0.33±0.03bcdefg | 0.42±0.09abc | |
150 | 4.00±0.30cd | 3.17±0.21f | 1.36±0.12defg | 1.64±0.03cde | 0.29±0.07bcdefghi | 0.42±0.02abc | |
200 | 3.07±0.06fg | 3.07±0.12fg | 1.23±0.12fgh | 1.17±0.15fghi | 0.26±0.07cdefghi | 0.41±0.05abc | |
B | 50 | 3.77±0.31de | 3.03±0.06fg | 2.47±0.47a | 1.13±0.06fghij | 0.57±0.16a | 0.39±0.03bcd |
100 | 3.40±0.20ef | 2.60±0.41gh | 1.35±0.03defg | 0.80±0.14ijklm | 0.40±0.07bcd | 0.37±0.05bcde | |
150 | 2.30±0.20hi | 2.14±0.16hij | 1.08±0.28fghij | 0.73±0.05jklmn | 0.25±0.06cdefghi | 0.31±0.06bcdefgh | |
200 | 2.00±0.00ijkl | 1.66±0.12jklm | 0.74±0.24jklmn | 0.66±0.19lmno | 0.25±0.01cdefghi | 0.27±0.13bcdefghi | |
C | 50 | 2.92±0.13fg | 2.14±0.16hij | 1.00±0.00ghijkl | 1.10±0.19fghij | 0.35±0.04bcdef | 0.36±0.10bcdef |
100 | 2.33±0.12hi | 1.69±0.07jklm | 0.95±0.00ghijkl | 0.63±0.08lmno | 0.31±0.04bcdefgh | 0.29±0.09bcdefghi | |
150 | 1.47±0.15lm | 1.21±0.12mn | 0.81±0.16hijklm | 0.36±0.06nopq | 0.25±0.04cdefghi | 0.11±0.15ijkl | |
200 | 0.88±0.20nop | 0.33±0.58pq | 0.41±0.18mnopq | 0.14±0.25pq | 0.16±0.27ghijkl | 0.27±0.02bcdefghi | |
D | 50 | 4.03±0.29cd | 3.40±0.10ef | 1.44±0.01def | 1.44±0.21efg | 0.34±0.02bcdefg | 0.33±0.08bcdefg |
100 | 3.17±0.29f | 2.30±0.26hi | 1.28±0.07efg | 1.01±0.25ghijkl | 0.31±0.02bcdefgh | 0.33±0.03bcdefg | |
150 | 2.31±0.20hi | 1.53±0.55klm | 1.22±0.12fgh | 0.72±0.05klmn | 0.02±0.01kl | 0.28±0.10bcdefghi | |
200 | 0.37±0.64opq | 1.20±1.17mn | 0.33±0.58nopq | 0.71±0.13klmn | 0.72±0.27kl | 0.05±0.09jkl | |
E | 50 | 2.07±0.06hijk | 0.91±0.21no | 0.63±0.06lmno | 0.46±0.14mnop | 0.22±0.01defghij | 0.28±0.13bcdefghi |
100 | 0.91±0.12no | 0.51±0.46opq | 0.33±0.02nopq | 0.27±0.24opq | 0.19±0.05efghij | 0.18±0.17fghijk | |
150 | 0.66±0.62nop | 0.44±0.40opq | 0.15±0.13pq | 0.15±0.13pq | 0.13±0.13hijkl | 0.16±0.15ghijkl | |
200 | 0.00±0.00q | 0.00±0.00q | 0.00±0.00q | 0.00±0.00q | 0.00±0.00l | 0.00±0.00l |
图3 混合盐碱胁迫对E+醉马草POD活性的影响不同小写字母表示在P<0.05水平上差异显著。下同。Values with different small letters mean significant difference at P<0.05 level. The same below.
Fig.3 The effect of complex saline-alkali treatment on POD activity of E+ drunken horse grass
混合盐胁迫处理Saline-alkali treatment | 发芽率Germination rate | 发芽势Germination potential | 发芽指数Germination index | 活力指数 Vigor index | 平均发芽时间MGT | 苗长Seedling length | 胚根 长度 Radicle length | 根冠比Root-shoot ratio | POD | SOD | MDA | CAT | 脯氨酸Proline | 隶属函数平均值Subjection average value | 排序Rank |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 0.5606 | 0.4924 | 0.4593 | 0.3828 | 0.5816 | 0.6013 | 0.7327 | 0.6294 | 0.4688 | 0.6136 | 0.6263 | 0.4944 | 0.7610 | 0.5696 | 1 |
B | 0.4056 | 0.3818 | 0.3679 | 0.3527 | 0.4120 | 0.4936 | 0.6056 | 0.4308 | 0.5189 | 0.6204 | 0.4420 | 0.5513 | 0.5372 | 0.4708 | 3 |
C | 0.3752 | 0.3438 | 0.3313 | 0.3176 | 0.3838 | 0.4506 | 0.4548 | 0.3333 | 0.5577 | 0.5182 | 0.4608 | 0.4267 | 0.4781 | 0.4178 | 4 |
D | 0.6250 | 0.4800 | 0.5218 | 0.4905 | 0.4370 | 0.4945 | 0.4369 | 0.5615 | 0.5307 | 0.6042 | 0.6302 | 0.6406 | 0.5653 | 0.5399 | 2 |
E | 0.3182 | 0.3333 | 0.3047 | 0.2887 | 0.3762 | 0.3939 | 0.3500 | 0.3274 | 0.4259 | 0.4981 | 0.5579 | 0.3366 | 0.3621 | 0.3748 | 5 |
表6 不同混合盐碱胁迫下E+醉马草的隶属函数值及耐盐性综合评价
Table 6 Subjection values and comprehensive evaluation of salt tolerance order of E+ drunken horse grass under complex saline-alkali treatments
混合盐胁迫处理Saline-alkali treatment | 发芽率Germination rate | 发芽势Germination potential | 发芽指数Germination index | 活力指数 Vigor index | 平均发芽时间MGT | 苗长Seedling length | 胚根 长度 Radicle length | 根冠比Root-shoot ratio | POD | SOD | MDA | CAT | 脯氨酸Proline | 隶属函数平均值Subjection average value | 排序Rank |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 0.5606 | 0.4924 | 0.4593 | 0.3828 | 0.5816 | 0.6013 | 0.7327 | 0.6294 | 0.4688 | 0.6136 | 0.6263 | 0.4944 | 0.7610 | 0.5696 | 1 |
B | 0.4056 | 0.3818 | 0.3679 | 0.3527 | 0.4120 | 0.4936 | 0.6056 | 0.4308 | 0.5189 | 0.6204 | 0.4420 | 0.5513 | 0.5372 | 0.4708 | 3 |
C | 0.3752 | 0.3438 | 0.3313 | 0.3176 | 0.3838 | 0.4506 | 0.4548 | 0.3333 | 0.5577 | 0.5182 | 0.4608 | 0.4267 | 0.4781 | 0.4178 | 4 |
D | 0.6250 | 0.4800 | 0.5218 | 0.4905 | 0.4370 | 0.4945 | 0.4369 | 0.5615 | 0.5307 | 0.6042 | 0.6302 | 0.6406 | 0.5653 | 0.5399 | 2 |
E | 0.3182 | 0.3333 | 0.3047 | 0.2887 | 0.3762 | 0.3939 | 0.3500 | 0.3274 | 0.4259 | 0.4981 | 0.5579 | 0.3366 | 0.3621 | 0.3748 | 5 |
混合盐胁迫处理 Saline-alkali treatment | 发芽率Germination rate | 发芽势Germination potential | 发芽指数Germination index | 活力 指数 Vigor index | 平均发芽时间MGT | 苗长Seedling length | 胚根 长度Radicle length | 根冠比Root-shoot ratio | POD | SOD | MDA | CAT | 脯氨酸Proline | 隶属函数平均值Subjection average value | 排序Rank |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 0.6875 | 0.5641 | 0.5873 | 0.6147 | 0.4405 | 0.5204 | 0.5538 | 0.7194 | 0.5502 | 0.6071 | 0.6612 | 0.8050 | 0.6287 | 0.6108 | 1 |
B | 0.4286 | 0.3958 | 0.3951 | 0.3975 | 0.4619 | 0.4800 | 0.4762 | 0.5784 | 0.4167 | 0.5657 | 0.5655 | 0.5889 | 0.5346 | 0.4835 | 3 |
C | 0.3999 | 0.3636 | 0.3395 | 0.3192 | 0.4318 | 0.4652 | 0.3928 | 0.3603 | 0.4505 | 0.4306 | 0.4375 | 0.5700 | 0.4239 | 0.4142 | 4 |
D | 0.5250 | 0.4583 | 0.4040 | 0.3507 | 0.4979 | 0.5326 | 0.6289 | 0.5417 | 0.5167 | 0.5093 | 0.5041 | 0.5256 | 0.7923 | 0.5221 | 2 |
E | 0.3417 | 0.3278 | 0.3280 | 0.2834 | 0.2997 | 0.4127 | 0.3279 | 0.3381 | 0.3406 | 0.4653 | 0.4929 | 0.3705 | 0.3838 | 0.3625 | 5 |
表7 不同混合盐碱胁迫下E-醉马草的隶属函数值及耐盐性综合评价
Table 7 Subjection values and comprehensive evaluation of salt tolerance order of E- drunken horse grass under complex saline-alkali treatments
混合盐胁迫处理 Saline-alkali treatment | 发芽率Germination rate | 发芽势Germination potential | 发芽指数Germination index | 活力 指数 Vigor index | 平均发芽时间MGT | 苗长Seedling length | 胚根 长度Radicle length | 根冠比Root-shoot ratio | POD | SOD | MDA | CAT | 脯氨酸Proline | 隶属函数平均值Subjection average value | 排序Rank |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | 0.6875 | 0.5641 | 0.5873 | 0.6147 | 0.4405 | 0.5204 | 0.5538 | 0.7194 | 0.5502 | 0.6071 | 0.6612 | 0.8050 | 0.6287 | 0.6108 | 1 |
B | 0.4286 | 0.3958 | 0.3951 | 0.3975 | 0.4619 | 0.4800 | 0.4762 | 0.5784 | 0.4167 | 0.5657 | 0.5655 | 0.5889 | 0.5346 | 0.4835 | 3 |
C | 0.3999 | 0.3636 | 0.3395 | 0.3192 | 0.4318 | 0.4652 | 0.3928 | 0.3603 | 0.4505 | 0.4306 | 0.4375 | 0.5700 | 0.4239 | 0.4142 | 4 |
D | 0.5250 | 0.4583 | 0.4040 | 0.3507 | 0.4979 | 0.5326 | 0.6289 | 0.5417 | 0.5167 | 0.5093 | 0.5041 | 0.5256 | 0.7923 | 0.5221 | 2 |
E | 0.3417 | 0.3278 | 0.3280 | 0.2834 | 0.2997 | 0.4127 | 0.3279 | 0.3381 | 0.3406 | 0.4653 | 0.4929 | 0.3705 | 0.3838 | 0.3625 | 5 |
主成分Principal component | E+醉马草耐盐性指标特征向量 Indicator eigenvector | 特征值Eigenvalue | 贡献率 Contribution (%) | 累积贡献率 Cumulative (%) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | X10 | X11 | X12 | X13 | ||||
Ⅰ | 0.290 | 0.279 | 0.300 | 0.341 | 0.178 | 0.185 | 0.344 | 0.295 | -0.247 | -0.236 | -0.337 | -0.294 | 0.210 | 8.395 | 64.576 | 64.576 |
Ⅱ | -0.137 | -0.082 | 0.095 | -0.019 | -0.484 | 0.563 | -0.011 | 0.238 | 0.171 | 0.236 | -0.088 | 0.240 | 0.454 | 2.174 | 16.720 | 81.296 |
Ⅲ | 0.377 | 0.434 | 0.303 | 0.084 | -0.040 | -0.093 | -0.011 | 0.078 | 0.482 | 0.482 | 0.120 | 0.049 | -0.271 | 1.762 | 13.556 | 94.852 |
表8 E+醉马草耐盐性指标的主成分分析
Table 8 Principal component analysis of salt tolerance index of E+ drunken horse grass
主成分Principal component | E+醉马草耐盐性指标特征向量 Indicator eigenvector | 特征值Eigenvalue | 贡献率 Contribution (%) | 累积贡献率 Cumulative (%) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | X10 | X11 | X12 | X13 | ||||
Ⅰ | 0.290 | 0.279 | 0.300 | 0.341 | 0.178 | 0.185 | 0.344 | 0.295 | -0.247 | -0.236 | -0.337 | -0.294 | 0.210 | 8.395 | 64.576 | 64.576 |
Ⅱ | -0.137 | -0.082 | 0.095 | -0.019 | -0.484 | 0.563 | -0.011 | 0.238 | 0.171 | 0.236 | -0.088 | 0.240 | 0.454 | 2.174 | 16.720 | 81.296 |
Ⅲ | 0.377 | 0.434 | 0.303 | 0.084 | -0.040 | -0.093 | -0.011 | 0.078 | 0.482 | 0.482 | 0.120 | 0.049 | -0.271 | 1.762 | 13.556 | 94.852 |
主成分Principal component | E-醉马草耐盐性指标特征向量 Indicator eigenvector | 特征值Eigenvalue | 贡献率 Contribution (%) | 累积贡献率 Cumulative (%) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | X10 | X11 | X12 | X13 | ||||
Ⅰ | 0.290 | 0.248 | 0.312 | 0.325 | 0.217 | 0.301 | 0.323 | 0.301 | -0.261 | -0.231 | -0.237 | -0.313 | 0.209 | 9.198 | 70.754 | 70.754 |
Ⅱ | -0.046 | -0.080 | -0.046 | -0.081 | 0.501 | -0.126 | 0.013 | -0.021 | 0.424 | 0.258 | -0.479 | 0.119 | 0.475 | 1.960 | 15.075 | 85.829 |
Ⅲ | 0.442 | 0.267 | 0.244 | 0.055 | 0.211 | -0.329 | 0.107 | 0.066 | -0.042 | 0.568 | 0.168 | 0.188 | -0.339 | 1.141 | 8.779 | 94.608 |
表9 E-醉马草耐盐性指标的主成分分析
Table 9 Principal component analysis of salt tolerance index of E- drunken horse grass
主成分Principal component | E-醉马草耐盐性指标特征向量 Indicator eigenvector | 特征值Eigenvalue | 贡献率 Contribution (%) | 累积贡献率 Cumulative (%) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | X10 | X11 | X12 | X13 | ||||
Ⅰ | 0.290 | 0.248 | 0.312 | 0.325 | 0.217 | 0.301 | 0.323 | 0.301 | -0.261 | -0.231 | -0.237 | -0.313 | 0.209 | 9.198 | 70.754 | 70.754 |
Ⅱ | -0.046 | -0.080 | -0.046 | -0.081 | 0.501 | -0.126 | 0.013 | -0.021 | 0.424 | 0.258 | -0.479 | 0.119 | 0.475 | 1.960 | 15.075 | 85.829 |
Ⅲ | 0.442 | 0.267 | 0.244 | 0.055 | 0.211 | -0.329 | 0.107 | 0.066 | -0.042 | 0.568 | 0.168 | 0.188 | -0.339 | 1.141 | 8.779 | 94.608 |
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