种子2026，Vol.45Issue(4)：56-62,69,8.DOI:10.16590/j.cnki.1001-4705.2026.04.056
尿素引发对甜菜种子萌发及生理特性的影响
Effects of Urea Priming on Seed Germination and Seedling Physiological Characteristics of Beta vulgaris
摘要
Abstract
To investigate the effects of urea application on the germination and physiological character-istics of Beta vulgaris seeds,'TD801'Beta vulgaris seeds were used as the material.4 urea concentra-tions(0.3,0.6,0.9,1.2 g/L)and 3 soaking times(8,16,24 hours)were set up for the experiment.The results showed that the treatment combinations at medium and low concentrations(0.3 g/L+24 hours,0.6 g/L+8 hours)could significantly increase the seed vitality level,effectively promote the elongation of embryonic roots,enhance the activities of antioxidant enzymes(SOD,CAT),increase the content of ascorbic acid(AsA)and the ratio of reduced ascorbic acid/oxidized ascorbic acid(AsA/DHA),and reduce the content of malondialdehyde(MDA)and the electrical conductivity of the extract solution.The high concentration(≥0.9 g/L)treatment would inhibit seed germination and aggravate membrane lipid peroxidation.Correlation analysis indicated that the germination indicators were significantly positively correlated with growth indicators,antioxidant capacity and osmotic regu-latory substances,and significantly negatively correlated with membrane damage indicators.This sug-gested that urea-induced regulation of antioxidant,membrane protection and osmotic regulation func-tions could reduce the degree of membrane lipid peroxidation and promote seed germination vitality.关键词
甜菜/尿素/种子引发/活力水平/生理特性Key words
Beta vulgaris/urea/seed priming/vigor level/physiological characteristics分类
农业科技引用本文复制引用
司政扬,胡华兵,王荣华,王茂芊..尿素引发对甜菜种子萌发及生理特性的影响[J].种子,2026,45(4):56-62,69,8.基金项目
国家糖料产业体系子项目"甜菜优良单胚不育系选育与优势组合创新"(CARS-170113-1) （CARS-170113-1）
国家糖料产业体系子项目"甜菜抗根腐病及抗丛根病品种筛选与鉴定"(CARS-17011004) （CARS-17011004）
黑龙江省博士后面上项目"不同根冠比甜菜转录组-蛋白组联合分析"(LBH-Z22246) （LBH-Z22246）
高校基础科研业务费项目"甜菜耐水涝材料调控基因挖掘及功能鉴定"(2024-KYYWF-0091) （2024-KYYWF-0091）
