胡麻萌发期和苗期对盐胁迫的阈值分析

doi:10.6048/j.issn.1001-4330.2022.01.017

新疆农业科学 ›› 2022, Vol. 59 ›› Issue (1): 145-154.DOI: 10.6048/j.issn.1001-4330.2022.01.017

• 园艺特产·植物保护·生理生化 • 上一篇下一篇

胡麻萌发期和苗期对盐胁迫的阈值分析

赵玮¹(), 马海霞², 张艳萍³()

1.甘肃省农业科学院作物研究所,兰州 730070
2.甘肃省农业科学院农业经济与信息研究所,兰州 730070
3.甘肃省农业科学院生物技术研究所,兰州 730070

收稿日期:2020-06-01 出版日期:2022-01-20 发布日期:2022-02-18
通信作者: 张艳萍
作者简介:赵玮(1976-),男,副研究员,研究方向为胡麻耐盐品种选育,(E-mail) 308214921@qq.com
基金资助:
国家自然科学基金(31560347);甘肃省知识产权计划(21ZSCQ026);甘肃省农业科学院科研条件建设与成果转化-重点研发计划(2021GAAS18);兰州市引进国外智力成果示范推广基地;兰州市产学研合作基地(2021-1-35);兰州市人才创新创业项目(2021-RC-64)

Threshold Analysis of Salt Stress in Flax at Germination and seedling Stage

ZHAO Wei¹(), MA Haixia², ZHANG Yanping³()

1. Crop Research Institute,Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
2. Institute of Biotechnology, Gansu Academy of Agricultural Science.,Lanzhou 730070,China
3. Institute of Agricultural and Economic Information,Gansu Academy of Agricultural Sciences, Lanzhou 730070, China

Received:2020-06-01 Online:2022-01-20 Published:2022-02-18
Correspondence author: ZHANG Yanping
Supported by:
National Natural Science Fundation of China(31560347);Gansu Province Intellectual Property Planning Project(21ZSCQ026);Research condition construction and achievement transformation of Gansu Academy of Agricultural Sciences-Key research and development projects(2021GAAS18);Lanzhou Demonstration and Promotion Base of Introducing Foreign Intellectual Achievements;Lanzhou Industry-University-Reasearch Cooperation Base(2021-1-35);Lanzhou Talents Innovation and entrepreneurship Project(2021-RC-64)

摘要/Abstract

摘要：

【目的】研究单盐(NaCl)和复盐(Na₂SO₄、NaHCO₃)胁迫下对胡麻萌发期和苗期生长以及耐盐阈值的影响,为胡麻耐盐材料的筛选提供基础参考。【方法】选用耐盐性不同的2个胡麻品种,设置不同浓度的盐胁迫处理,分析不同指标的变化,采用相关性和回归分析,萌发期单盐胁迫选取总鲜重、复盐胁迫选取发芽率,苗期单盐胁迫选取根干重、复盐胁迫选取总鲜重等指标与盐胁迫浓度建立了二次回归方程:Y=42.949x²-263.158x+224.564、Y=5.194x²-111.128x+109.467、Y=81.772x²-302.544x+382.076、Y=68.568x²-278.918x+326.567,以选定指标较对照降低50%为标准,分别计算萌发期和苗期的耐盐阈值。【结果】萌发期单盐(NaCl)胁迫阈值为103.722 25 mmol/L;萌发期复盐(Na₂SO₄、NaHCO₃)胁迫阈值为55.201 5 mmol/L;;苗期单盐(NaCl)胁迫阈值为251.247 mmol/L;;苗期复盐(Na₂SO₄、NaHCO₃)胁迫阈值为204.25 mmol/L。【结论】胡麻对中性盐比碱性盐的耐受力要强;胡麻不同组织对盐胁迫的耐受力存在较大差别;胡麻萌发期和苗期的耐盐性不具有一致性。

关键词: 胡麻; 盐胁迫; 萌发期; 苗期; 耐盐阈值

Abstract:

【Objective】 In order to provide the basic reference for screening salt-tolerant flax materials, we study the growth and the salt tolerance threshold of flax under the single salt (NaCl)and the mixed salt(Na₂SO₄、NaHCO₃)in germination stage and seedling stage. 【Method】 We selected two flax varieties with different salt tolerance to be treated with salt solution of different concentrations, then studied the changes of different indicators. Through correlation and regression analysis, the indictors which were total fresh weight in single salt stress at germination stage、 germination rate in mixed salt stress at germination stage、root dry weight in single salt stress at seedling stage and total fresh weight in mixed salt stress at seedling stage were selected to establish the quadratic regression equation with salt stress concentration :Y=42.949x²-263.158x+224.564、Y=5.194x²-111.128x+109.467、Y=81.772x²-302.544x+382.076、Y=68.568x²-278.918x+326.567.Taking reduced 50% of the selected indicators compared with the control as standard to calculate the salt tolerance threshold of flax in germination stage and seedling stage. 【Result】 The threshold values of single salt(NaCl)stress in germination stage、mixed salt (Na₂SO₄、NaHCO₃)stress in germination stage、single salt(NaCl)stress in seedling stage and mixed salt (Na₂SO₄、NaHCO₃)stress in seedling stage were respectively 103.722,25,55.201,5,251.247 and 204.25 mmol/L by calculated. 【Conclusion】 The tolerance of flax to neutral salt was stronger than that of alkaline salt.The salt tolerance of different tissues of flax has great difference. At the germination and seedling stage of flax,the salt tolerance was not consistent.

Key words: flax; salt stress; germination stage; seedling stage; salt tolerance threshold

中图分类号:

S563

赵玮, 马海霞, 张艳萍. 胡麻萌发期和苗期对盐胁迫的阈值分析[J]. 新疆农业科学, 2022, 59(1): 145-154.

ZHAO Wei, MA Haixia, ZHANG Yanping. Threshold Analysis of Salt Stress in Flax at Germination and seedling Stage[J]. Xinjiang Agricultural Sciences, 2022, 59(1): 145-154.

图/表 13

表1 盐处理浓度

Table 1 Salt concentration

时期 Period	盐处理Salt
	NaCl浓度 NaCl concentration(mmol)	(Na₂SO₄+NaHCO₃)浓度 (Na₂SO₄+NaHCO₃)concentration(mmol)
	1 2 3 4 5 6 7 8 9	1 2 3 4 5 6 7 8 9
萌发期 Germination period	0 50 100 150 200 250	0 25 50 75 100 125
苗期 Deedling stage	0 50 100 150 200 250 300 350 400	0 50 100 150 200 250 300 350 400

表2 胡麻萌发期单盐和复盐胁迫下的相对耐盐系数

Table 2 Relative salt tolerance coefficient of flax in single and mixed salt stress at germination stage(%)

材料 Material	指标 Indicator	处理Treatment
材料 Material	指标 Indicator	1	2	3	4	5	6
陇亚10号 Longya10	相对发芽率(单盐) 相对发芽率(复盐)	100.0 100.0	106.5 94.8	92.2 80.5	76.6 27.3	22.1 0.0	0.0 0.0
	相对总鲜重(单盐) 相对总鲜重(复盐)	100.0 100.0	85.2 73.4	47.8 26.3	33.7 0.0	0.0 0.0	0.0 0.0
	相对下胚轴长(单盐) 相对下胚轴长(复盐)	100.0 100.0	72.9 58.8	27.8 10.0	14.3 0.0	0.0 0.0	0.0 0.0
	相对胚根长(单盐) 相对胚根长(复盐)	100.0 100.0	79.5 56.6	42.2 7.4	11.2 0.0	0.0 0.0	0.0 0.0
定亚5号 Dingya5	相对发芽率(单盐) 相对发芽率(复盐)	100.0 100.0	80.0 68.0	72.0 41.3	38.7 14.7	8.0 0.0	0.0 0.0
	相对总鲜重(单盐) 相对总鲜重(复盐)	100.0 100.0	75.4 70.8	49.6 20.8	26.8 0.0	0.0 0.0	0.0 0.0
	相对下胚轴长(单盐) 相对下胚轴长(复盐)	100.0 100.0	44.2 37.7	22.0 6.3	10.4 0.0	0.0 0.0	0.0 0.0
	相对胚根长(单盐) 相对胚根长(复盐)	100.0 100.0	72.1 53.1	44.1 7.7	8.5 0.0	0.0 0.0	0.0 0.0

表3 胡麻萌发期单盐和复盐胁迫方差

Table 3 Variance analysis of flax in single and mixed salt stress at germination stage

指标 Indicator	F值
指标 Indicator	品种 Varieties	盐处理 Treatment	品种×盐处理 Varieties×Treatment
相对发芽率(单盐)Relative germination rate(single salt) 相对发芽率(复盐)Relative germination rate(mixed salt)	77.287^ 21.447^	280.680^ 130.068^	9.343^ 5.146^
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	58.608^ 121.867^	189.887^ 816.215^	8.458^ 30.512^
相对下胚轴长(单盐)Relative hypocotyl length(single salt) 相对下胚轴长(复盐)Relative hypocotyl length(mixed salt)	9.866^ 9.749^	238.676^ 595.550^	4.847^ 6.452^
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	26.742^ 4.964^	172.809^ 146.547^	5.340^ 3.231^

表4 胡麻萌发期单盐和复盐胁迫下的相对耐盐系数均值的多重比较

Table 4 Multiple comparison of mean relative salt tolerance coefficient of flax in single and mixed salt stress at germination stage(%)

指标 Indicator	盐处理 Treatment
指标 Indicator	1	2	3	4	5	6
相对发芽率(单盐)Relative germination rate(single salt) 相对发芽率(复盐)Relative germination rate(mixed salt)	100.0^A 100.0^A	93.2^A 81.4^A	82.1^A 60. $9 A B$	57. $6 A B$ 21. $0 B C$	15. $0 B C$ 0.0^C	0.0^C 0.0^C
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	100.0^A 100.0^A	80.3^B 72.1^B	48.7^C 23.6^C	30.2^D 0.0^D	0.0^E 0.0^D	0.0^E 0.0^D
相对下胚轴长(单盐)Relative hypocotyl length(single salt) 相对下胚轴长(复盐)Relative hypocotyl length(mixed salt)	100.0^A 100.0^A	58.6^B 48.3^B	24.9^C 8.2^C	12.3^C 0.0^C	0.0^C 0.0^C	0.0^C 0.0^C
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	100.0^A 100.0^A	75.8^B 64.8^B	43.1^C 7.5^C	9.8^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C

表4 胡麻萌发期单盐和复盐胁迫下的相对耐盐系数均值的多重比较

Table 4 Multiple comparison of mean relative salt tolerance coefficient of flax in single and mixed salt stress at germination stage(%)

指标 Indicator	盐处理 Treatment
指标 Indicator	1	2	3	4	5	6
相对发芽率(单盐)Relative germination rate(single salt) 相对发芽率(复盐)Relative germination rate(mixed salt)	100.0^A 100.0^A	93.2^A 81.4^A	82.1^A 60. $9 A B$	57. $6 A B$ 21. $0 B C$	15. $0 B C$ 0.0^C	0.0^C 0.0^C
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	100.0^A 100.0^A	80.3^B 72.1^B	48.7^C 23.6^C	30.2^D 0.0^D	0.0^E 0.0^D	0.0^E 0.0^D
相对下胚轴长(单盐)Relative hypocotyl length(single salt) 相对下胚轴长(复盐)Relative hypocotyl length(mixed salt)	100.0^A 100.0^A	58.6^B 48.3^B	24.9^C 8.2^C	12.3^C 0.0^C	0.0^C 0.0^C	0.0^C 0.0^C
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	100.0^A 100.0^A	75.8^B 64.8^B	43.1^C 7.5^C	9.8^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C

表5 胡麻苗期单盐和复盐胁迫下的相对耐盐系数

Table 5 Relative salt tolerance coefficient of flax in single and mixed salt stress at seedling stage(%)

材料 Materials	指标 Indicator	处理Treatment
材料 Materials	指标 Indicator	1	2	3	4	5	6	7	8	9
陇亚 10号	RST(单盐) RST(复盐)	100.0 100.0	100.0 100.0	100.0 100.0	100.0 88.3	100.0 68.3	68.7 0.0	43.3 0.0	0.0 0.0	0.0 0.0
Longya 10	RPT(单盐) RPT(复盐)	100.0 100.0	101.2 86.0	91.1 75.7	83.4 68.3	81.4 68.0	64.2 0.0	53.0 0.0	0.0 0.0	0.0 0.0
	相对胚根长(单盐) 相对胚根长(复盐)	100.0 100.0	95.7 84.3	84.3 83.6	83.5 82.4	81.6 79.6	75.7 0.0	74.8 0.0	0.0 0.0	0.0 0.0
	相对总鲜重(单盐) 相对总鲜重(复盐)	100.0 100.0	108.4 76.9	80.9 75.2	75.4 49.4	73.0 49.1	58.6 0.0	45.8 0.0	0.0 0.0	0.0 0.0
	RTDW(单盐) RTDW(复盐)	100.0 100.0	91.6 74.1	69.3 67.0	65.5 53.1	56.9 50.4	54.5 0.0	45.1 0.0	0.0 0.0	0.0 0.0
	RRDW(单盐) RRDW(复盐)	100.0 100.0	97.0 30.3	69.7 26.0	54.5 16.5	42.4 14.9	37.7 0.0	23.8 0.0	0.0 0.0	0.0 0.0
定亚5号 Dingya5	RST(单盐) RST(复盐)	100.0 100.0	100.0 100.0	100.0 100.0	100.0 58.0	100.0 56.0	67.8 0.0	37.8 0.0	0.0 0.0	0.0 0.0
	RPT(单盐) RPT(复盐)	100.0 100.0	101.2 88.2	82.3 79.2	76.2 62.2	70.0 60.9	66.3 0.0	52.2 0.0	0.0 0.0	0.0 0.0
	相对胚根长(单盐) 相对胚根长(复盐)	100.0 100.0	121.1 80.5	87.6 74.4	79.8 71.6	79.4 70.9	68.1 0.0	57.4 0.0	0.0 0.0	0.0 0.0
	相对总鲜重(单盐) 相对总鲜重(复盐)	100.0 100.0	105.1 61.9	81.7 47.4	71.6 41.9	65.2 36.8	50.5 0.0	48.1 0.0	0.0 0.0	0.0 0.0
	RTDW(单盐) RTDW(复盐)	100.0 100.0	103.3 44.9	79.5 44.3	70.3 42.0	68.1 33.6	50.5 0.0	48.9 0.0	0.0 0.0	0.0 0.0
	RRDW(单盐) RRDW(复盐)	100.0 100.0	145.7 39.8	93.5 37.9	82.6 33.5	76.1 27.5	31.7 0.0	27.8 0.0	0.0 0.0	0.0 0.0

表6 胡麻苗期单盐和复盐胁迫方差

Table 6 Variance analysis of flax in single and mixed salt stress at seedling stage

指标 Indicator	F值
指标 Indicator	品种 Varieties	盐处理 Treatment	品种盐浓度 VarietiesTreatment
RST(单盐)(Single salt) RST(复盐)(Mixed salt)	0.098 8.880^**	167.074^ 543.789^	0.078 6.250^**
RPT(单盐)(Single salt) RPT(复盐)(Mixed salt)	6.242^* 1.389	519.578^ 1 569.596^	1.968 2.510^*
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	0.103 3.214	153.076^ 151.930^	3.728^** 0.611
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	0.585 25.457^**	54.512^ 349.915^	0.145 6.159^**
RTDW(单盐)(single salt) RTDW(复盐)(mixed salt)	1.051 61.401^**	44.553^ 451.144^	0.217 17.209^**
RRDW(单盐)(single salt) RRDW(复盐)(mixed salt)	0.903 12.471^**	11.581^ 178.986^	0.294 3.013^*

表7 胡麻苗期单盐和复盐胁迫下的相对耐盐系数均值的多重比较

Table 7 Multiple comparison of mean relative salt tolerance coefficient of flax in single and mixed salt stress at seedling stage

指标 Indicator	盐处理Treatment
指标 Indicator	1	2	3	4	5	6	7	8	9
RST(单盐)(Single salt) RST(复盐)(Mixed salt)	100.0^A 100.0^A	100.0^A 100.0^A	100.0^A 100.0^A	100.0^A 73.2^B	100.0^A 52.2^C	68.2^B 0.0^D	40.6^C 0.0^D	0.0^D 0.0^D	0.0^D 0.0^D
RPT(单盐)(Single salt) RPT(复盐)(Mixed salt)	100.0^A 100.0^A	101.2^A 87.1^B	86.7^B 77.5^C	79.8^B 65.3^D	75. $7 B C$ 54.5^D	65.3^C 0.0^E	52.6^D 0.0^E	0.0^E 0.0^E	0.0^E 0.0^E
相对胚根长(单盐) Relative radiclel length (single salt) 相对胚根长(复盐) Relative radiclel length(mixed salt)	100. $0 A B$ 100.0^A	108.4^A 82.4^B	84. $6 A B C$ 77.2^B	81. $4 A B C$ 67. $0 B C$	77. $8 B C$ 56.9^C	76. $2 B C$ 0.0^D	56.1^C 0.0^D	0.0^D 0.0^D	0.0^D 0.0^D
相对总鲜重(单盐) Relative total fresh weight(single salt) 相对总鲜重(复盐) Relative total fresh weight(mixed salt)	100.0^A 100.0^A	106.7^A 68.6^B	81.3^B 62.1^B	73. $5 B C$ 45.7^B	69.1^C 42.9^B	54.5^D 0.0^C	46.9^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C
RTDW(单盐)(Single salt) RTDW(复盐)(Mixed salt)	100.0^A 100.0^A	97.4^A 56.0^B	73.4^B 53.8^B	67. $9 B C$ 48.7^B	62. $5 B C D$ 46.2^B	52. $5 C D$ 0.0^C	47.0^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C
RRDW(单盐)(Single salt) RRDW(复盐)(Mixed salt)	100. $0 A B$ 100.0^A	121.3^A 45.0^B	81. $6 A B C$ 29.8^B	65. $3 B C D$ 26.4^B	62. $5 B C D$ 22.0^B	34. $7 C D E$ 0.0^C	25. $8 D E$ 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C

表7 胡麻苗期单盐和复盐胁迫下的相对耐盐系数均值的多重比较

Table 7 Multiple comparison of mean relative salt tolerance coefficient of flax in single and mixed salt stress at seedling stage

指标 Indicator	盐处理Treatment
指标 Indicator	1	2	3	4	5	6	7	8	9
RST(单盐)(Single salt) RST(复盐)(Mixed salt)	100.0^A 100.0^A	100.0^A 100.0^A	100.0^A 100.0^A	100.0^A 73.2^B	100.0^A 52.2^C	68.2^B 0.0^D	40.6^C 0.0^D	0.0^D 0.0^D	0.0^D 0.0^D
RPT(单盐)(Single salt) RPT(复盐)(Mixed salt)	100.0^A 100.0^A	101.2^A 87.1^B	86.7^B 77.5^C	79.8^B 65.3^D	75. $7 B C$ 54.5^D	65.3^C 0.0^E	52.6^D 0.0^E	0.0^E 0.0^E	0.0^E 0.0^E
相对胚根长(单盐) Relative radiclel length (single salt) 相对胚根长(复盐) Relative radiclel length(mixed salt)	100. $0 A B$ 100.0^A	108.4^A 82.4^B	84. $6 A B C$ 77.2^B	81. $4 A B C$ 67. $0 B C$	77. $8 B C$ 56.9^C	76. $2 B C$ 0.0^D	56.1^C 0.0^D	0.0^D 0.0^D	0.0^D 0.0^D
相对总鲜重(单盐) Relative total fresh weight(single salt) 相对总鲜重(复盐) Relative total fresh weight(mixed salt)	100.0^A 100.0^A	106.7^A 68.6^B	81.3^B 62.1^B	73. $5 B C$ 45.7^B	69.1^C 42.9^B	54.5^D 0.0^C	46.9^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C
RTDW(单盐)(Single salt) RTDW(复盐)(Mixed salt)	100.0^A 100.0^A	97.4^A 56.0^B	73.4^B 53.8^B	67. $9 B C$ 48.7^B	62. $5 B C D$ 46.2^B	52. $5 C D$ 0.0^C	47.0^D 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C
RRDW(单盐)(Single salt) RRDW(复盐)(Mixed salt)	100. $0 A B$ 100.0^A	121.3^A 45.0^B	81. $6 A B C$ 29.8^B	65. $3 B C D$ 26.4^B	62. $5 B C D$ 22.0^B	34. $7 C D E$ 0.0^C	25. $8 D E$ 0.0^C	0.0^E 0.0^C	0.0^E 0.0^C

表8 胡麻萌发期盐胁迫浓度与各指标间的相关系数

Table 8 Correlation coefficient between salt stress concentration and indicators of flax in germination stage

处理/指标 Treatment/Indicator	盐处理 Treatment	GT	TFW	HL	RL
Treatment(单盐)(Single salt) Treatment(复盐)(Mixed salt)	1 1	-0.967^ -0.976^	-0.983^** -0.913^*	-0.931^** -0.856^*	-0.959^** -0.870^*
GT(单盐)(Single salt) GT(复盐)(Mixed salt)		1 1	0.945^ 0.938^	0.827^* 0.863^*	0.890^* 0.882^*
TFW(单盐)(Single salt) TFW(复盐)(Mixed salt)			1 1	0.959^ 0.971^	0.982^ 0.988^
HL(单盐)(Single salt) HL(复盐)(Mixed salt)				1 1	0.975^ 0.988^
RL(单盐)(Single salt) RL(复盐)(Mixed salt)					1 1

表9 胡麻苗期盐胁迫浓度与各指标间的相关系数

Table 9 Correlation coefficient between salt stress concentration and indicators of flax in germination stage

处理/指标 Treatment/Indicator	盐处理 Treatment	ST	PT	RL	TFW	TDW	RDW
Treatment(单盐)(Single salt) Treatment(复盐)(Mixed salt)	1 1	-0.893^ -0.932^	-0.931^ -0.938^	-0.882^ -0.897^	-0.956^ -0.948^	-0.959^ -0.925^	-0.968^** -0.749^*
ST(单盐)(Single salt) ST(复盐)(Mixed salt)		1 1	0.967^ 0.989^	0.938^ 0.964^	0.947^ 0.958^	0.933^ 0.930^	0.892^** 0.731^*
PT(单盐)(Single salt) PT(复盐)(Mixed salt)			1 1	0.989^ 0.984^	0.992^ 0.978^	0.989^ 0.966^	0.932^ 0.805^
RL(单盐)(Single salt) RL(复盐)(Mixed salt)				1 1	0.976^ 0.945^	0.975^ 0.953^	0.897^ 0.803^
TFW(单盐)(Single salt) TFW(复盐)(Mixed salt)					1 1	0.997^ 0.990^	0.968^ 0.885^
TDW(单盐)(Single salt) TDW(复盐)(Mixed salt)						1 1	0.958^ 0.929^
RDW(单盐)(Single salt) RDW(复盐)(Mixed salt)							1 1

图1 萌发期总鲜重与单盐胁迫浓度间的回归关系

Fig.1 Regression relationship between total fresh weight and single salt stress concentration in germination stage

图2 萌发期发芽率与复盐胁迫浓度间的回归关系

Fig.2 Regression relationship between germination rate and mixed salt stress concentration in germination stage

图3 苗期根干重与单盐胁迫浓度间的回归关系

Fig.3 Regression relationship between root dry weight and single salt stress concentration in seedling stage

图4 苗期总鲜重与复盐胁迫浓度间的回归关系

Fig.4 Regression relationship between total fresh weight and mixed salt stress concentration in seedling stage

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指标 Indicator	F值
指标 Indicator	品种 Varieties	盐处理 Treatment	品种×盐处理 Varieties×Treatment
相对发芽率(单盐)Relative germination rate(single salt) 相对发芽率(复盐)Relative germination rate(mixed salt)	77.287^ 21.447^	280.680^ 130.068^	9.343^ 5.146^
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	58.608^ 121.867^	189.887^ 816.215^	8.458^ 30.512^
相对下胚轴长(单盐)Relative hypocotyl length(single salt) 相对下胚轴长(复盐)Relative hypocotyl length(mixed salt)	9.866^ 9.749^	238.676^ 595.550^	4.847^ 6.452^
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	26.742^ 4.964^	172.809^ 146.547^	5.340^ 3.231^

指标 Indicator	F值
指标 Indicator	品种 Varieties	盐处理 Treatment	品种×盐处理 Varieties×Treatment
相对发芽率(单盐)Relative germination rate(single salt) 相对发芽率(复盐)Relative germination rate(mixed salt)	77.287^ 21.447^	280.680^ 130.068^	9.343^ 5.146^
相对总鲜重(单盐)Relative total fresh weight(single salt) 相对总鲜重(复盐)Relative total fresh weight(mixed salt)	58.608^ 121.867^	189.887^ 816.215^	8.458^ 30.512^
相对下胚轴长(单盐)Relative hypocotyl length(single salt) 相对下胚轴长(复盐)Relative hypocotyl length(mixed salt)	9.866^ 9.749^	238.676^ 595.550^	4.847^ 6.452^
相对胚根长(单盐)Relative radiclel length (single salt) 相对胚根长(复盐)Relative radiclel length(mixed salt)	26.742^ 4.964^	172.809^ 146.547^	5.340^ 3.231^

胡麻萌发期和苗期对盐胁迫的阈值分析

Threshold Analysis of Salt Stress in Flax at Germination and seedling Stage

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