Effects of Salt Stress on Germination Characteristics of Different Sugar Beet Seeds

doi:10.11924/j.issn.1000-6850.casb2023-0884

Abstract

Abstract:

The study aims to explore the germination status of different sugar beet materials under salt stress, and screen sugar beet materials with strong salt tolerance. In this study, three beet materials (‘TD801’, ‘TD802’, ‘TD805’) were treated with simulated salt stress with concentrations of 0, 50, 75, 100, 150 and 200 mmol/L NaCl solutions. The activity indexes and salt tolerance coefficient of different sugar beet materials under different concentrations of NaCl solutions were determined, and the salt tolerance performance of the beet materials was comprehensively evaluated by principal component analysis and membership function method. The results showed that some of the vitality indexes of different sugar beet materials under different sodium chloride concentration stress showed different trends. According to the principal component analysis of the salt tolerance coefficient of sugar beet seed germination index, the characteristic value of the first principal component was 5.921, and the contribution rate was 74.012%. Based on the membership function method and the comprehensive evaluation of D value analysis, it was found that ‘TD801’ had strong salt tolerance among the three types of sugar beet materials, followed by ‘TD802’ and ‘TD805’, which could provide a theoretical reference for the selection of suitable sugar beet materials in saline-alkali land.

Key words: sugar beet, salt stress, seed germination, principal component analysis, membership function method, comprehensive evaluation

LIU Aijie, HU Huabing, WANG Ronghua, WANG Maoqian. Effects of Salt Stress on Germination Characteristics of Different Sugar Beet Seeds[J]. Chinese Agricultural Science Bulletin, 2024, 40(21): 20-28.

Figures/Tables 11

References 29

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品种	发芽势	发芽率	发芽指数	活力指数	物质效率	苗长	鲜重	干重
TD801	0.672	0.915	0.760	0.686	0.641	0.870	0.573	0.571
TD802	0.700	0.841	0.708	0.594	0.533	0.810	0.645	0.645
TD805	0.656	0.801	0.634	0.424	0.453	0.772	0.594	0.644

品种	发芽势	发芽率	发芽指数	活力指数	物质效率	苗长	鲜重	干重
TD801	0.672	0.915	0.760	0.686	0.641	0.870	0.573	0.571
TD802	0.700	0.841	0.708	0.594	0.533	0.810	0.645	0.645
TD805	0.656	0.801	0.634	0.424	0.453	0.772	0.594	0.644

指标	载荷矩阵		特征向量
指标	主成分1	主成分2	特征向量Y1	特征向量Y2
发芽势	0.237	0.972	0.097	0.674
发芽率	0.999	-0.042	0.411	-0.029
发芽指数	0.974	0.227	0.400	0.157
活力指数	0.956	0.294	0.393	0.204
物质效率	0.999	0.043	0.411	0.030
芽苗长	1.000	-0.007	0.411	-0.005
鲜重	-0.404	0.915	-0.166	0.635
干重	-0.918	0.396	-0.377	0.275
特征值	5.921	2.079
贡献率/%	74.012	25.988
累积贡献率/%	74.040	100.000

指标	载荷矩阵		特征向量
指标	主成分1	主成分2	特征向量Y1	特征向量Y2
发芽势	0.237	0.972	0.097	0.674
发芽率	0.999	-0.042	0.411	-0.029
发芽指数	0.974	0.227	0.400	0.157
活力指数	0.956	0.294	0.393	0.204
物质效率	0.999	0.043	0.411	0.030
芽苗长	1.000	-0.007	0.411	-0.005
鲜重	-0.404	0.915	-0.166	0.635
干重	-0.918	0.396	-0.377	0.275
特征值	5.921	2.079
贡献率/%	74.012	25.988
累积贡献率/%	74.040	100.000

品种	μ(X₁)	μ(X₂)	D值	排序
TD801	2.59	-0.64	1.75	1
TD802	-0.36	1.65	0.16	2
TD805	-2.23	-1.01	-1.92	3