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.
蔡阳光,段龙飞,覃剑锋,周高新,唐晓东,徐聪,郭邦利. 不同浓度外源硒对魔芋球茎硒含量和营养指标的影响[J]. 中国蔬菜, 2024, 1(4): 115-120.
CAI Yangguang,DUAN Longfei,QIN Jianfeng,ZHOU Gaoxin,TANG Xiaodong,XU Cong,GUO Bangli . Effects of Different Concentrations Exogenous Selenium Application on Selenium Content and Nutritional Indices of Konjac Bulbs . China Vegetables, 2024, 1(4): 115-120.