农业环境科学学报2024，Vol.43Issue(4)：774-785,12.DOI:10.11654/jaes.2023-0493
菜薹镉低积累"油蔬两用"油菜品种筛选及海藻糖对其镉积累和品质的影响
Selection of bolt low-cadmium-accumulation rapeseed varieties and investigation of the effect of trehalose on their cadmium accumulation and quality
摘要
Abstract
To improve cultivation and regulation for the safe production of"oil-vegetable dual-usage"rapeseed(Brassica napus)in cadmium(Cd)-contaminated farmland,this study employed 22 varieties B.napus as the primary materials.Through pot experiments,this study aimed to identify rapeseed varieties with low Cd accumulation based on differences in Cd accumulation and aboveground dry weight.Furthermore,the effects of exogenous trehalose application at different stages(seedling stage,bolting stage,and seedling + bolting stage)and concentrations(10,20,40 mmol·L-1,and 80 mmol·L-1)on the growth,Cd accumulation,and quality of bolt low-Cd-accumulation varieties.The results indicated significant differences in Cd accumulation and aboveground dry weight among 22 rapeseed varieties under Cd stress.Notably,Annongyou 1(ANY-1)and Tongyouza 2(TYZ-2)exhibited high-biomass and low-Cd-accumulation characteristics,making them suitable for cultivation as dual-usage rapeseed varieties.Compared with the control(CK),Cd treatment resulted in stunted rapeseed growth and reduced rapeseed flower stalk yield and quality.The exogenous application of 10-40 mmol·L-1 trehalose could alleviate the toxicity of Cd on rapeseed to varying degrees,reduce Cd accumulation in rapeseed flower stalks,and improve the yield and quality.Among the different application stages and concentrations,spraying 20 mmol·L-1 trehalose at the seedling stage was the most effective.Spraying 20 mmol·L-1 trehalose at the seedling stage alleviated Cd toxicity in two rapeseed varieties.It significantly increased the relative chlorophyll content(SPAD),shoot fresh weight,root fresh weight,and crown diameter by 13.4%-16.1%,59.1%-63.3%,42.1%-103.6%,and 30.6%-37.8%,respectively.The Cd content of rapeseed flower stalks was significantly decreased by 61.5%-70.6%,while the yield,soluble protein,and soluble sugar contents were increased by 28.4%-34.5%,41.9%-46.0%,and 62.6%-76.1%,respectively.In conclusion,the cultivation of rapeseed varieties ANY-1 and TYZ-2 with bolt low Cd accumulation in Cd-contaminated soil,combined with spraying 20 mmol·L-1 trehalose at the seedling stage,effectively reduced Cd accumulation in rapeseed flower stalk,ensuring their safety for consumption and improving their yield and quality.关键词
油菜薹/镉积累/海藻糖/低积累品种/品质Key words
rapeseed flower stalk/cadmium accumulation/trehalose/low-accumulation varieties/quality分类
农业科技引用本文复制引用
邹翔宇,周可金,余燕,岳文丽,贺原,丁茂文,李瑞,董嘉,朱宗河,郑文寅,张付贵..菜薹镉低积累"油蔬两用"油菜品种筛选及海藻糖对其镉积累和品质的影响[J].农业环境科学学报,2024,43(4):774-785,12.基金项目
国家自然科学基金项目(32201915) （32201915）
高校优秀青年人才支持计划重点项目(gxyqZD2021096) （gxyqZD2021096）
安徽省油料作物产业技术体系"十四五"计划项目 （）
安徽农业大学大学生创新创业训练计划(X202210364526)National Natural Science Foundation of China(32201915) （X202210364526）
The Key Project of the Outstanding Young Talents Support Program for Universities(gxyqZD2021096) （gxyqZD2021096）
The 14th Five-Year Plan Project of Anhui Oil Crop Industry Technology System （）
The Innovation and Entrepreneurship Training Program of Anhui Agricultural University(X202210364526) （X202210364526）
