Difference Analysis of Yield and Quality and Comprehensive Evaluation of Different Welsh Onion Varieties in Saline-Alkali Land

Wang Qinghua; Gao Limin; Sun Yaling; Liu Zezhou; Kong Suping; Yue Lixin

doi:10.14083/j.issn.1001-4942.2026.03.005

Abstract：Screening of saline-alkali tolerant vegetable germplasm resources or varieties is very important for vegetable planting in saline-alkali land.In this study,9 Welsh onion varieties were used as materials,and the differences in their yield and quality traits in moderate saline-alkali land were analyzed by randomized block design,in order to screen out high-quality Welsh onion varieties with saline-alkali tolerance and provide a scientific basis for Welsh onion planting in saline-alkali land.The results were as follows.① There were sig-nificant differences in plant height,pseudostem length,pseudostem diameter and other economic traits and yield among the 9 Welsh onion varieties.The yield of Lucongza 1 was the highest,which was 74 925.60 kg/hm2,followed by Lucongza 5 and Youxuan Dawutong,which were 72 191.10 and 68 715.75 kg/hm2.②There were significant differences in the content of total sugar and soluble solids and other quality traits among different varieties.The total sugar content was 56.86 to 84.62 mg/g,the content of soluble solids was 8.78％to 11.16％,the crude fiber content was 3.08％to 5.43％,the ascorbic acid content was 65.24 to 126.72 μg/g,and the pyruvic acid content was 118.90 to 479.37 μg/g.Among them,Youxuan Dawutong had the highest content of soluble solids,higher total sugar and dry matter contents,and the lowest pyruvic acid and crude fi-ber contents,showing better fresh food quality characteristics.③ Through principal component analysis,three principal components were finally extracted,with a cumulative variance contribution rate of 87.696％.④ Ac-cording to the evaluation results of the membership function method,the order of the comprehensive characters of the nine varieties in field from superior to inferior was Youxuan Dawutong＞Lucong 8＞Lucongza 5＞Lucongza 3＞Lucongza 1＞Luqiucong 5＞Luqiucong 4＞Fencong 1 and Fencong 2.The comprehensive membership function value of the first five varieties was much higher than that of the other four varieties,showing excellent compre-hensive characters in the field.In summary,Youxuan Dawutong,Lucongza 5,Lucongza 1 and Lucongza 8 had strong growth vigour,high yield and better quality,to they were suitable for promoting to cultivate in saline-al-kali land.