Screening and Evaluation of 107 Salt-alkali Tolerant Vicia faba Germplasms from the Qinghai Plateau
In order to identify the Vicia faba germplasms with good saline-alkali tolerance,the Vicia faba was planted in saline-alkali soil and treated with natural salt and alkali stress during the whole growth period,and 6 indexes such as fresh pod length,plant height,grain length,grain width,grain thickness and yield per plant were measured.The salt-alkali tolerance of 107 Vicia faba materials was evaluated by principal compo-nent analysis and other methods,and the germplasm suitable for planting in saline area of Qinghai Province was selected.The results showed that all the indexes of Vicia faba germplasms were correlated to some extent under saline-alkali stress.In this experiment,two principal components were extracted,and the cumulative variance contribution rate reached 70.716％,which could effectively reflect most of the information of the six indexes of the tested materials,indicating the saline-alkali resistance characteristics of Vicia faba during the whole growth period under salt and alkali stress.Based on the D-value cluster analysis,the tested materials were divided into five groups:Group Ⅰ including 1 part of high saline-alkali tolerance materials,Group Ⅱincluding 29 parts of saline-alkali tolerance materials,Group Ⅲ including 62 parts of medium saline-alkali tolerance materials,Group Ⅳ including 13 parts of saline-alkali sensitive materials and Group V including 2 parts of extremely saline-alkali sensitive materials.
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维普
