Comprehensive Evaluation of Salt Stress Tolerance of Seedling Stage of Mustard Germplasm Based on Membership Function Method

doi:10.19586/j.2095-2341.2025.0131

Current Biotechnology ›› 2026, Vol. 16 ›› Issue (1): 94-104.DOI: 10.19586/j.2095-2341.2025.0131

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Comprehensive Evaluation of Salt Stress Tolerance of Seedling Stage of Mustard Germplasm Based on Membership Function Method

Xuming XIE¹(), Qinwen LEI¹(), Jingzhou WANG², Li CHEN¹, Huachuan HE¹, Zhengjie WAN²(), Heping WAN¹()

^1.College of Life Sciences，Jianghan University，Wuhan 430056，China
^2.College of Horticulture and Forestry Sciences，Huazhong Agricultural University，Wuhan 430070，China

Received:2025-09-28 Accepted:2025-12-25 Online:2026-01-25 Published:2026-02-12
Contact: Zhengjie WAN,Heping WAN

Abstract

Abstract:

As one of China's distinctive vegetable crops， mustard serves as an excellent experimental material for investigating the effects of salt stress—a key abiotic stress factor—on plant growth during the seedling stage. The germination performance and root morphology of 132 mustard germplasm accessions were evaluated under both normal conditions and optimal salt stress （1.0% NaCl） derived from a salt tolerance screening system tailored for the germination-to-seedling stage. Comprehensive analysis was conducted using growth status， salt tolerance indices for root traits， and membership functions to derive the D-value， a composite measure of salt tolerance. Ultimately， the 132 Brassica juncea accessions were classified into 38 salt-sensitive types， identifying 3 highly salt-tolerant accessions （D>0.6）， 22 salt-tolerant accessions （0.3<D<0.6）， and 69 salt-intolerant accessions （D<0.3）. Among them， a principal component analysis was conducted on the root salt tolerance coefficients， resulting in a composite index 1 （CI₁） and CI₂ with contribution rates of 66.886% and 26.835%， respectively. This demonstrated that ST-AD hud stronger independence when CI₂ accounted for a higher proportions. Other root coefficients exhibited linear relationships with D values， enabling regression equation construction. In conclusion， the root coefficient of rapeseed can be used to more conveniently assess salt tolerance comprehensively， adding a new approach to evaluating the salt tolerance of rapeseed.

Key words: mustard, salt stress tolerance, membership function method, linear regression, comprehensive index

摘要：

芥菜作为我国特色蔬菜之一，是研究盐胁迫这种关键非生物胁迫因子对植物幼苗时期成长影响的优质实验材料。评估了132份芥菜种质资源在正常条件与从构建的适用于芥菜萌发成苗期的耐盐性鉴定体系所得的最适盐胁迫（1.0% NaCl）下的萌发表现及幼苗根系形态。根据生长状况以及各根系性状的耐盐指数并采用隶属函数法进行综合分析，得到耐盐性综合评价决策值（decision value, D值）。最终从132份芥菜分类出38份盐敏感型，鉴定出3份强耐盐种质（D>0.6）、22份耐盐种质（0.3<D<0.6）和69份不耐盐种质（D<0.3）。其中，对根部耐盐系数进行主成分分析，所得的综合指标1（composite index 1，CI₁）与CI₂贡献率分别为66.886%和26.835%，证明在CI₂占比较高ST-AD独立性更强，其他根部系数与D值存在线性关系并可构建回归方程。综上，芥菜的根系系数可用于更便捷地综合评估其耐盐性，为评价芥菜的耐盐性提供了新方法。

关键词: 芥菜, 耐盐性, 隶属函数法, 线性回归, 综合指标

CLC Number:

Q945

Xuming XIE, Qinwen LEI, Jingzhou WANG, Li CHEN, Huachuan HE, Zhengjie WAN, Heping WAN. Comprehensive Evaluation of Salt Stress Tolerance of Seedling Stage of Mustard Germplasm Based on Membership Function Method[J]. Current Biotechnology, 2026, 16(1): 94-104.

谢旭明, 雷钦文, 王竞舟, 陈丽, 何华川, 万正杰, 万何平. 基于隶属函数法对芥菜种质萌发成苗阶段耐盐能力的综合评价[J]. 生物技术进展, 2026, 16(1): 94-104.

Figures/Tables 10

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编号	材料名称	变种类型	编号	材料名称	变种类型	编号	材料名称	变种类型
1	22-720-1	大头芥	45	22-420-4	分蘖芥	89	23-852-2	大头芥
2	23-719-3	大头芥	46	23-411-2	分蘖芥	90	紫色大头菜	大头芥
3*	22-718-2	大头芥	47	23-412-5	分蘖芥	91*	22-761-4	大头芥
4	22-717-5	大头芥	48	20-413-2	分蘖芥	92*	22-762-4	大头芥
5	23-716-2	大头芥	49*	22-414-4	分蘖芥	93*	22-763-4	大头芥
6	22-711-3	大头芥	50*	22-415-2	分蘖芥	94	22-764-4	大头芥
7	22-712-5	大头芥	51*	22-431-5	分蘖芥	95	22-765-1	大头芥
8*	22-713-4	大头芥	52*	22-432-3	分蘖芥	96	22-766-3	大头芥
9	21-714-2	大头芥	53	22-433-5	分蘖芥	97	23-767-3	大头芥
10*	21-715-2	大头芥	54	23-434-3	分蘖芥	98*	22-768-4	大头芥
11	23-426-2	分蘖芥	55	23-435-3	分蘖芥	99	23-769-4	大头芥
12	23-427-3	分蘖芥	56	23-436-4	分蘖芥	100*	23-770-2	大头芥
13*	23-428-1	分蘖芥	57	22-437-5	分蘖芥	101	23-401-2	分蘖芥
14	22-429-5	分蘖芥	58	22-438-2	分蘖芥	102	23-402-5	分蘖芥
15	22-430-1	分蘖芥	59	23-439-1	分蘖芥	103	22-132-35	分蘖芥
16	22-421-4	分蘖芥	60	23-440-1	分蘖芥	104	22-404-2	分蘖芥
17	23-422-3	分蘖芥	61*	22-721-1	大头芥	105	23-405-5	分蘖芥
18	22-423-4	分蘖芥	62	22-722-5	大头芥	106	23-406-1	分蘖芥
19	23-424-4	分蘖芥	63*	20-723	大头芥	107	23-407-3	分蘖芥
20	23-425-2	分蘖芥	64	23-724-1	大头芥	108	23-408-4	分蘖芥
21	23-741-5	大头芥	65*	22-725-3	大头芥	109*	23-409-3	分蘖芥
22	22-742-2	大头芥	66	22-726-1	大头芥	110*	22-410-2	分蘖芥
23	23-743-5	大头芥	67*	川兴大头菜	大头芥	111*	22-441-3	分蘖芥
24	23-744-3	大头芥	68	22-728-5	大头芥	112*	22-990-3	大头芥
25	23-746-4	大头芥	69*	22-729-1	大头芥	113	23-443-1	分蘖芥
26	22-745-2	大头芥	70*	22-730-3	大头芥	114	23-444-3	分蘖芥
27	22-747-2	大头芥	71*	21-731-1	大头芥	115	22-445-6	分蘖芥
28	22-748-4	大头芥	72*	22-732-3	大头芥	116	23-446-4	分蘖芥
29	21-750-2	大头芥	73*	风味大头菜	大头芥	117	23-447-1	分蘖芥
30	23-749-1	大头芥	74	23-734-4	大头芥	118	23-448-2	分蘖芥
31	22-701-2	大头芥	75*	21-735-4	大头芥	119	23-449-3	分蘖芥
32	22-702-2	大头芥	76	23-736-2	大头芥	120*	22-326-3	分蘖芥
33	22-703-5	大头芥	77*	21-737-4	大头芥	121*	21-751-2	大头芥
34	22-704-3	大头芥	78	23-738-4	大头芥	122*	21-752-3	大头芥
35	21-705-4	大头芥	79*	22-739-1	大头芥	123	22-753-2	大头芥
36	22-710-2	大头芥	80*	22-740-4	大头芥	124	脆宝大头菜	大头芥
37	23-706-5	大头芥	81	神龙大头菜	大头芥	125*	21-755-1	大头芥
38	23-207-3	分蘖芥	82	21-844-1	大头芥	126	23-756-3	大头芥
39*	21-708-3	大头芥	83*	22-622-2	大头芥	127	23-757-2	大头芥
40	23-709-1	大头芥	84	23-774-3	大头芥	128	23-758-4	大头芥
41	22-416-2	分蘖芥	85	23-776-1	大头芥	129	23-759-4	大头芥
42	22-417-4	分蘖芥	86	22-777-5	大头芥	130*	21-760-3	大头芥
43	23-418-1	分蘖芥	87	22-778-2	大头芥	131*	22-1131-2	大头芥
44	23-419-1	分蘖芥	88	泸溪大头菜	大头芥	132	诸城大头菜	大头芥

编号	材料名称	变种类型	编号	材料名称	变种类型	编号	材料名称	变种类型
1	22-720-1	大头芥	45	22-420-4	分蘖芥	89	23-852-2	大头芥
2	23-719-3	大头芥	46	23-411-2	分蘖芥	90	紫色大头菜	大头芥
3*	22-718-2	大头芥	47	23-412-5	分蘖芥	91*	22-761-4	大头芥
4	22-717-5	大头芥	48	20-413-2	分蘖芥	92*	22-762-4	大头芥
5	23-716-2	大头芥	49*	22-414-4	分蘖芥	93*	22-763-4	大头芥
6	22-711-3	大头芥	50*	22-415-2	分蘖芥	94	22-764-4	大头芥
7	22-712-5	大头芥	51*	22-431-5	分蘖芥	95	22-765-1	大头芥
8*	22-713-4	大头芥	52*	22-432-3	分蘖芥	96	22-766-3	大头芥
9	21-714-2	大头芥	53	22-433-5	分蘖芥	97	23-767-3	大头芥
10*	21-715-2	大头芥	54	23-434-3	分蘖芥	98*	22-768-4	大头芥
11	23-426-2	分蘖芥	55	23-435-3	分蘖芥	99	23-769-4	大头芥
12	23-427-3	分蘖芥	56	23-436-4	分蘖芥	100*	23-770-2	大头芥
13*	23-428-1	分蘖芥	57	22-437-5	分蘖芥	101	23-401-2	分蘖芥
14	22-429-5	分蘖芥	58	22-438-2	分蘖芥	102	23-402-5	分蘖芥
15	22-430-1	分蘖芥	59	23-439-1	分蘖芥	103	22-132-35	分蘖芥
16	22-421-4	分蘖芥	60	23-440-1	分蘖芥	104	22-404-2	分蘖芥
17	23-422-3	分蘖芥	61*	22-721-1	大头芥	105	23-405-5	分蘖芥
18	22-423-4	分蘖芥	62	22-722-5	大头芥	106	23-406-1	分蘖芥
19	23-424-4	分蘖芥	63*	20-723	大头芥	107	23-407-3	分蘖芥
20	23-425-2	分蘖芥	64	23-724-1	大头芥	108	23-408-4	分蘖芥
21	23-741-5	大头芥	65*	22-725-3	大头芥	109*	23-409-3	分蘖芥
22	22-742-2	大头芥	66	22-726-1	大头芥	110*	22-410-2	分蘖芥
23	23-743-5	大头芥	67*	川兴大头菜	大头芥	111*	22-441-3	分蘖芥
24	23-744-3	大头芥	68	22-728-5	大头芥	112*	22-990-3	大头芥
25	23-746-4	大头芥	69*	22-729-1	大头芥	113	23-443-1	分蘖芥
26	22-745-2	大头芥	70*	22-730-3	大头芥	114	23-444-3	分蘖芥
27	22-747-2	大头芥	71*	21-731-1	大头芥	115	22-445-6	分蘖芥
28	22-748-4	大头芥	72*	22-732-3	大头芥	116	23-446-4	分蘖芥
29	21-750-2	大头芥	73*	风味大头菜	大头芥	117	23-447-1	分蘖芥
30	23-749-1	大头芥	74	23-734-4	大头芥	118	23-448-2	分蘖芥
31	22-701-2	大头芥	75*	21-735-4	大头芥	119	23-449-3	分蘖芥
32	22-702-2	大头芥	76	23-736-2	大头芥	120*	22-326-3	分蘖芥
33	22-703-5	大头芥	77*	21-737-4	大头芥	121*	21-751-2	大头芥
34	22-704-3	大头芥	78	23-738-4	大头芥	122*	21-752-3	大头芥
35	21-705-4	大头芥	79*	22-739-1	大头芥	123	22-753-2	大头芥
36	22-710-2	大头芥	80*	22-740-4	大头芥	124	脆宝大头菜	大头芥
37	23-706-5	大头芥	81	神龙大头菜	大头芥	125*	21-755-1	大头芥
38	23-207-3	分蘖芥	82	21-844-1	大头芥	126	23-756-3	大头芥
39*	21-708-3	大头芥	83*	22-622-2	大头芥	127	23-757-2	大头芥
40	23-709-1	大头芥	84	23-774-3	大头芥	128	23-758-4	大头芥
41	22-416-2	分蘖芥	85	23-776-1	大头芥	129	23-759-4	大头芥
42	22-417-4	分蘖芥	86	22-777-5	大头芥	130*	21-760-3	大头芥
43	23-418-1	分蘖芥	87	22-778-2	大头芥	131*	22-1131-2	大头芥
44	23-419-1	分蘖芥	88	泸溪大头菜	大头芥	132	诸城大头菜	大头芥

性状	最小值	最大值	平均值	标准偏差	变异系数/%
根总长RL-T/(cm)	1.270	10.98	4.054	1.672	41.26%
根总长RL-C/(cm)	2.267	20.418	8.197	3.162	38.57%
耐盐指数ST-RL	0.143	1.278	0.539	0.221	41.00%
根表面积SA-T/(cm²)	0.147	1.144	0.380	0.158	41.57%
根表面积SA-C/(cm²)	0.245	1.773	0.747	0.251	33.68%
耐盐指数ST-SA	0.157	1.467	0.545	0.213	39.08%
根体积 V-T/(cm³)	0.001	0.009	0.002	0.001	46.54%
根体积 V-C/(cm³)	0.002	0.014	0.005	0.002	36.47%
耐盐指数ST-RV	0.163	2.000	0.568	0.272	47.89%
平均直径AD-T/(mm)	0.239	0.422	0.303	0.034	11.26%
平均直径AD-C/(mm)	0.213	0.448	0.303	0.045	15.01%
耐盐指数ST-AD	0.650	1.447	1.024	0.153	14.94%
侧根数LRN-T	2.000	32.800	7.770	5.498	70.76%
侧根数LRN-C	4.600	58.000	15.638	6.338	40.53%
耐盐指数ST-LRN	0.135	2.733	0.544	0.417	76.65%

性状	最小值	最大值	平均值	标准偏差	变异系数/%
根总长RL-T/(cm)	1.270	10.98	4.054	1.672	41.26%
根总长RL-C/(cm)	2.267	20.418	8.197	3.162	38.57%
耐盐指数ST-RL	0.143	1.278	0.539	0.221	41.00%
根表面积SA-T/(cm²)	0.147	1.144	0.380	0.158	41.57%
根表面积SA-C/(cm²)	0.245	1.773	0.747	0.251	33.68%
耐盐指数ST-SA	0.157	1.467	0.545	0.213	39.08%
根体积 V-T/(cm³)	0.001	0.009	0.002	0.001	46.54%
根体积 V-C/(cm³)	0.002	0.014	0.005	0.002	36.47%
耐盐指数ST-RV	0.163	2.000	0.568	0.272	47.89%
平均直径AD-T/(mm)	0.239	0.422	0.303	0.034	11.26%
平均直径AD-C/(mm)	0.213	0.448	0.303	0.045	15.01%
耐盐指数ST-AD	0.650	1.447	1.024	0.153	14.94%
侧根数LRN-T	2.000	32.800	7.770	5.498	70.76%
侧根数LRN-C	4.600	58.000	15.638	6.338	40.53%
耐盐指数ST-LRN	0.135	2.733	0.544	0.417	76.65%

性状	ST-SA	ST-AD	ST-RL	ST-RV	ST-LRN
ST-SA	1
ST-AD	-0.041	1
ST-RL	0.902^**	-0.424^**	1
ST-RV	0.892^**	0.341^**	0.625^**	1
ST-LRN	0.808^**	0.123	0.635^**	0.811^**	1

Comprehensive Evaluation of Salt Stress Tolerance of Seedling Stage of Mustard Germplasm Based on Membership Function Method

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综合指标	ST-SA	ST-AD	ST-RL	ST-RV	ST-LRN	贡献率/%
CI₁	0.295	0.002	0.258	0.273	0.266	66.886
CI₂	-0.048	0.736	-0.347	0.258	0.119	26.835

播种编号	CI₁	μ₁	D	播种编号	CI₁	μ₁	D
1	-0.525 0	0.170 5	0.170 4	57	-0.453 6	0.182 2	0.182 4
2	0.541 0	0.343 9	0.343 6	58	-0.495 9	0.175 3	0.175 8
4	-0.271 8	0.211 7	0.212 0	59	0.926 1	0.406 5	0.405 8
5	-1.574 0	0	0	60	3.333 4	0.797 9	0.797 0
6	-0.635 9	0.152 5	0.152 8	62	-0.244 1	0.216 2	0.216 3
7	1.983 5	0.578 4	0.578 6	64	-0.132 5	0.234 4	0.234 3
9	-0.253 7	0.214 7	0.214 2	66	0.920 0	0.405 5	0.406 0
11	0.581 5	0.350 5	0.350 6	68	-0.542 5	0.167 7	0.168 1
12	1.651 2	0.524 4	0.524 2	74	-0.156 2	0.230 5	0.231 0
14	-1.233 9	0.055 3	0.055 3	76	-0.800 7	0.125 7	0.125 9
15	-1.019 0	0.090 2	0.090 7	78	-0.351 8	0.198 7	0.199 0
16	0.151 4	0.280 6	0.280 7	81	-0.211 0	0.221 6	0.221 8
17	-0.432 2	0.185 7	0.185 6	82	-0.790 2	0.127 4	0.127 8
18	0.162 2	0.282 3	0.282 3	84	-0.962 2	0.099 5	0.099 4
19	-0.875 9	0.113 5	0.113 3	85	0.065 8	0.266 6	0.266 6
20	1.853 8	0.557 3	0.557 9	86	0.251 3	0.296 8	0.297 3
21	0.821 1	0.389 4	0.389 4	87	1.611 3	0.517 9	0.518 6
22	2.585 5	0.676 3	0.676 9	88	0.775 1	0.382 0	0.382 5
23	0.214 0	0.290 7	0.291 0	89	-0.685 9	0.144 4	0.144 4
24	4.576 3	1	1	90	0.639 9	0.360 0	0.360 3
25	1.520 3	0.503 1	0.503 1	94	-0.606 8	0.157 3	0.157 4
26	-0.270 7	0.211 9	0.211 8	95	-0.782 8	0.128 6	0.128 6
27	-0.873 9	0.113 8	0.114 3	96	-0.286 3	0.209 4	0.208 8
28	-1.026 7	0.089 0	0.088 8	97	0.040 6	0.262 5	0.262 6
29	1.121 8	0.438 3	0.438 5	99	-0.110 4	0.238 0	0.238 1
30	0.778 9	0.382 6	0.383 2	101	-1.089 7	0.078 7	0.078 7
31	-0.128 9	0.235 0	0.235 2	102	-0.608 2	0.157 0	0.157 2
32	0.388 4	0.319 1	0.319 3	103	-0.655 2	0.149 4	0.150 3
33	0.414 9	0.323 4	0.323 3	104	-0.725 0	0.138 1	0.138 2
34	-0.038 1	0.249 7	0.249 9	105	-0.180 7	0.226 6	0.227 2
35	-1.205 4	0.059 9	0.060 2	106	-0.635 8	0.152 6	0.153 2
36	-0.534 6	0.169 0	0.170 0	107	-1.072 9	0.081 5	0.081 7
37	-0.385 8	0.193 2	0.193 8	108	-0.313 7	0.204 9	0.205 2
38	1.088 4	0.432 9	0.433 4	113	-0.397 0	0.191 4	0.191 2
40	-0.132 8	0.234 3	0.234 7	114	-0.729 2	0.137 4	0.137 6
41	0.645 5	0.360 9	0.361 4	115	-0.966 3	0.098 8	0.099 1
42	-0.365 3	0.196 5	0.197 3	116	0.026 6	0.260 3	0.260 4
43	1.144 6	0.442 0	0.442 2	117	-0.969 4	0.098 3	0.098 5
44	-0.377 3	0.194 6	0.195 1	118	0.213 6	0.290 7	0.291 2
45	0.110 6	0.273 9	0.274 5	119	1.304 1	0.468 0	0.467 9
46	0.128 9	0.276 9	0.277 2	123	0.685 8	0.367 4	0.367 6
47	-0.284 9	0.209 6	0.209 3	124	0.016 9	0.258 7	0.258 7
48	-0.743 2	0.135 1	0.135 3	126	-0.386 2	0.193 1	0.193 1
53	-1.147 1	0.069 4	0.068 8	127	0.526 1	0.341 5	0.341 2
54	-0.891 5	0.111 0	0.110 8	128	0.154 6	0.281 1	0.281 2
55	-0.381 4	0.193 9	0.193 9	129	-0.323 5	0.203 3	0.203 5
56	-0.362 6	0.197 0	0.196 8	132	-1.317 9	0.041 7	0.041 5

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