不同喷施时期、硒源对沙棘硒素吸收及果实品质的影响  

Effects of different selenium sources and spraying periods on selenium absorption and fruit quality of seabuckthorn

作　　者：李曦光 李萧婷 王蕾 高健 罗磊 LI Xiguang;LI Xiaoting;WANG Lei;GAO Jian;LUO Lei(Institute of Modern Forestry,Xinjiang Academy of Forestry,Urumqi 830000;key Laboratory of Xinjiang Forest Resources and Utilization State Forestry and Grassland Bureau,Urumqi 830000;Xinjiang Key Laboratory of Fruit Tree Breeding and Cultivation,Urumqi 830000,China)

机构地区：[1]新疆林业科学院现代林业研究所,乌鲁木齐830000 [2]新疆林木资源与利用国家林草局重点实验室,乌鲁木齐830000 [3]新疆林果树种选育与栽培重点实验室,乌鲁木齐830000

出　　处：《干旱区资源与环境》2024年第11期179-186,共8页Journal of Arid Land Resources and Environment

基　　金：新疆维吾尔自治区公益性科研院所基本科研业务经费资助项目(ky2022088);2021年度国家科技基础资源调查专项第三次新疆综合科学考察项目(2021xjkk130207)资助。

摘　　要：沙棘是多年生落叶灌木或小乔木。果实富含多种营养物质,如黄酮、维生素、微量元素等。硒元素在动植物的生长发育中起到十分重要的作用。文中以“无刺丰”为材料,选取20mg/L Na_(2)SeO_(3)、Na_(2)SeO_(4)为硒源,通过12种处理方式分别对沙棘植株样本进行喷施,该研究为探索不同喷施时期和硒源对沙棘果实硒含量及果实品质的影响,可为沙棘提质增效,富硒沙棘的发展,沙棘产业标准化、可持续性发展提供科学理论基础。结果表明:1)以20mg/L Na_(2)SeO_(3)或Na_(2)SeO_(4)作为硒源,均可改善果实品质,但施用Na_(2)SeO_(4)效果综合优于Na_(2)SeO_(3);短期连续喷施处理效果优于单次喷施处理,其中自沙棘植株出芽期持续喷施至成熟期(S2)效果最佳,可达到富硒农产品标准。2)施用Na_(2)SeO_(3)、Na_(2)SeO_(4)处理,果实硒含量与蛋白质、维生素C、总酸、多糖、可溶性糖、总黄酮、果皮脂肪、种子脂肪、果肉脂肪均呈现不同程度正相关关系。Seabuckthorn is a perennial deciduous shrub or small tree,its fruit is rich in a variety of nutrients,such as flavonoids,vitamins,trace elements and so on.Selenium plays an important role in the growth and development of animals and plants.In this experiment,20mg/L Na_(2)SeO_(3) and Na_(2)SeO_(4) were selected as selenium sources.The samples of seabuckthorn plant were sprayed by 12 treatments,to explore the effects of different spraying periods and selenium sources on the selenium content and fruit quality of seabuckthorn.It can provide a scientific theoretical basis for improving the quality and efficiency of seabuckthorn production,the development of selenium-enriched seabuckthorn,and the standardization and sustainable development of seabuckthorn industry.The results showed that:1) Using 20mg/L Na_(2)SeO_(3) or Na_(2)SeO_(4) as selenium source could improve fruit quality,but the effect of Na_(2)SeO_(4) was better than that of Na_(2)SeO_(3).Short-term continuous spraying outperformed a single application.Specifically,the most effective approach involved spraying from the germination stage through to maturity stage in seabuckthorn,enabling the product to meet the standard of selenium-enriched agricultural products.2) Under the treatment of Na_(2)SeO_(3) and Na_(2)SeO_(4),selenium content of fruit was positively correlated with protein,vitamin C,total acid,polysaccharide,soluble sugar,total flavonoids,peel fat,seed fat and pulp fat in different degrees.

关 键 词：沙棘 硒含量 果实品质 硒源 喷施时期 

分 类 号：S793.6[农业科学—林木遗传育种]