不同甘薯品种在安康地区的适应性及对硒元素吸收积累的研究

Study on the Adaptability of Different Sweet Potato Varieties in Ankang Area and the Ab-sorption and Accumulation of Selenium

摘要: 目的：研究不同品种甘薯对外源硒吸收积累，探索甘薯富硒技术，筛选富集硒能力较强、品质优、产量高、农艺性状表现好的品种，为富硒甘薯产业在安康地区推广提供科学理论依据。方法：以8个甘薯品种为材料，通过外源施硒，研究不同甘薯品种自然富硒能力的差异。结果：8个品种中块根硒含量由大到小为：苏薯16号 > 济薯26 > 秦薯8号 > 榆薯1号 > 烟薯25 > 紫薯2号 > 秦薯5号 > 紫薯3号。茎叶硒含量由大到小为：济薯26 > 烟薯25 > 苏薯16 > 秦薯8 > 榆薯1号 > 紫薯2号 > 秦薯5号 > 秦紫3号。从产量上看，以秦薯5号(ck)做对照，位居产量最高的是秦薯8号，3616 kg/667 m²，以此排序为苏薯16 > 济薯26 > 秦薯5 > 烟25 > 榆引1号 > 秦紫2号 > 秦紫3号。

Abstract: Objective: To study the absorption and accumulation of exogenous selenium in different sweet potato varieties, to explore the selenium-enriched technology of sweet potato, and to screen the varieties with strong selenium enrichment ability, excellent quality, high yield and good agronomic traits, and to provide the scientific theoretical basis for generalizing selenium-enriched sweet potato industry in Ankang area. Method: Eight sweet potato varieties were used as materials to study the difference of natural selenium-enriching ability of different sweet potato varieties by exogenous application of selenium. Results: The selenium content of the roots of the 8 varieties was from large to small: Sushu 16 > Jishu 26 > Qinshu 8 > Yushu 1 > Yanshu 25 > Zishu 2 > Qinshu 5 > Purple Potato No. 3. The selenium content of stems and leaves is from large to small: Jishu 26 > Yanshu 25 > Sushu 16 > Qinshu 8 > Yushu 1 > Zishu 2 > Qinshu 5 > Qin Zi 3. From the perspective of yield, Qinshu No. 5 (ck) was used as the control. The highest yield was Qinshu No. 8, 3616 kg/667 m². The order was as Sushu 16 > Jishu 26 > Qinshu 5 > Smoke 25 > Yushu No. 1 > Qin Zi 2 > Qin Zi 3.