CAJ | 학술논문

采用1/2 Hoagland营养液室内培养试验，研究不同浓度Na＋对甜菜幼苗生理生化指标和营养元素吸收的影响。结果表明，0.759 mmol/L Na＋可提高甜菜幼苗体内Na＋含量和幼苗高度，增加叶面积（除了9 mmol/L Na＋）和干物质量，降低叶片水势，提高叶片的相对含水量、GPX和CAT的活性，促进甜菜幼苗叶片的吸水及保水能力。3 mmol/L Na＋对甜菜幼苗的生长促进作用最明显，可提高CAT、GPX活性并维持较高的SOD活性，降低MDA含量和相对电导率，未明显降低甜菜体内N、P和K含量，是甜菜幼苗生长的最佳Na＋浓度。
채용1/2 Hoagland영양액실내배양시험，연구불동농도Na＋대첨채유묘생리생화지표화영양원소흡수적영향。결과표명，0.759 mmol/L Na＋가제고첨채유묘체내Na＋함량화유묘고도，증가협면적（제료9 mmol/L Na＋）화간물질량，강저협편수세，제고협편적상대함수량、GPX화CAT적활성，촉진첨채유묘협편적흡수급보수능력。3 mmol/L Na＋대첨채유묘적생장촉진작용최명현，가제고CAT、GPX활성병유지교고적SOD활성，강저MDA함량화상대전도솔，미명현강저첨채체내N、P화K함량，시첨채유묘생장적최가Na＋농도。
Sugar beet was cultivated in the hydroponic experiment to investigate the effects of the different Na +concentrations on plant growth , physiological and biochemical character and nutrient absorption of sugar beet seedlings .The results show that the height , dry weigh of sugar beet seedlings , and leaf area ( except 9 mmol/L) , relative water content , activities of GPX and CAT of leaves increased , while water potential of leaves decreased when the Na +concentrations were 0.75-9 mmol/L.Na+promoted capacity of water absorption and preserving of sugar beet seedling .Relative water content of leaf raised , water potential of leaves , MDA content of leaves and electrolyte conductivity of leaves reduced , activity of SOD remained unchanged , activities of GPX and CAT were promoted, absorbed dose of nutrient elements of N , P, K were unchanged when the concentration of Na +was 3 mmol/L.3 mmol/L Na+ in the 1/2 Hoagland nutrient solution was best to stimulate the growth of sugar beet seedlings .