摘要
为探明花魔芋、白魔芋以及两者杂交后代优选品系ZL-19的富硒和耐硒能力,以及外源硒对魔芋球茎营养物质的影响,采用盆栽的方式开展不同浓度亚硒酸钠(0、5、10、20、40 mg·kg-1)灌根试验.结果表明,不同品种(系)球茎最高含硒量为:ZL-19与白魔芋相当,为0.192 mg·kg-1,低于花魔芋(0.265 mg·kg-1).在耐硒能力方面:ZL-19＞白魔芋＞花魔芋,而在富硒能力方面花魔芋＞ZL-19＞白魔芋.花魔芋在外源硒浓度为10 mg·kg-1 时,球茎各项营养指标综合表现较优,球茎鲜质量增加了13.13%,球茎总糖、还原糖、总蛋白、可溶性蛋白含量和GSH-Px活性分别达到了71.265、27.019、50.811、17.605 mg·g-1 和1.845 U·g-1;白魔芋在外源硒浓度为20 mg·kg-1 时,球茎各项营养指标综合表现较优,球茎鲜质量增加了12.94%,球茎总糖、还原糖、总蛋白和可溶性蛋白含量和GSH-Px活性分别达到了97.012、29.632、52.773、16.892 mg·g-1 和1.642 U·g-1;ZL-19同样在外源硒浓度为20 mg·kg-1 时,球茎各项营养指标综合表现较优,球茎鲜质量增加了28.80%,球茎总糖、还原糖、总蛋白和可溶性蛋白含量和GSH-Px活性分别达到了84.717、31.819、49.402、17.709 mg·g-1 和1.719 U·g-1.
Abstract
In order to verify the selenium enrichment and selenium tolerance properties of flower konjac,amorphophallus albus and optimum line ZL-19 from their hybrid offspring;and effects of exogenous selenium on nutrients of Amorphophallus Rivieri corms,this paper carried out root irrigation test with different concentrations of sodium selenite(0,5,10,20,40 mg·kg-1)using potting method.The results showed that the highest selenium content in corms of different varieties(lines)were as following:Zl-19 was equivalent to amorphophallus albus(0.192 mg·kg-1),lower than that of flower konjac(0.265 mg·kg-1).In selenium tolerance:ZL-19＞amorphophallus albus＞flower konjac.While,in selenium enrichment capacity:flower konjac＞ZL-19＞amorphophallus albus.When the concentration of exogenous selenium in flower konjac was 10 mg·kg-1,the general performance of various nutritional indexes of the corms were comparatively excellent.And the corm fresh weight was increased by 13.13%.The contents of total sugar,reducing sugar,total protein,soluble protein and GSH-Px activity in corm were 71.265,27.019,50.811,17.605 mg·g-1 and 1.845 U·g-1,respectively.When the concentration of exogenous selenium in amorphophallus albus was 20 mg·kg-1,the general performance of various nutritional indexes of the corms were comparatively excellent.And the corm fresh weight was increased by 12.94%.The contents of total sugar,reducing sugar,total protein,soluble protein and GSH-Px activity in corms were 97.012,29.632,52.773,16.892 mg·g-1 and 1.642 U·g-1,respectively.Also when the concentration of exogenous selenium in ZL-19 was 20 mg·kg-1,the general performances of various nutritional indexes of the corms were comparatively excellent.The corm fresh weight was increased by 28.80%.The contents of total sugar,reducing sugar,total protein and soluble protein and GSH-Px activity in corms reached 84.717,31.819,49.402,17.709 mg·g-1 and 1.719 U·g-1,respectively.
基金项目
陕西省重点研发计划项目(2023XCZX2-02)
陕西省重点研发计划项目(2023XCZX2-05)
安康市"揭榜挂帅"重点科技项目(AK2023-JBGS-05)
陕西省自然科学基础研究计划项目(2024JC-YBQN-0244)
国家科技期刊平台
NSTL
维普
万方数据