CAJ | 학술논문

采用GB/T 5009.33-2003盐酸萘乙二胺分光光度法,对香椿种子休眠期、露自期、子叶期、幼苗期等不同发育时期亚硝酸盐含量进行系统测定,同时对香椿幼苗期不同部位的亚硝酸盐含量、生长于室内和室外的香椿体内亚硝酸盐含量进行测定.结果表明:香椿种子在萌发和生长过程中,其体内的亚硝酸盐含量呈递减趋势:种子内的亚硝酸盐含量最高,幼苗的亚硝酸盐含量最低,露白期和子叶期幼苗的亚硝酸盐含量居中;不同立地条件下,生长于室内的香椿苗亚硝酸盐含量高于生长于室外的香椿苗.
채용GB/T 5009.33-2003염산내을이알분광광도법,대향춘충자휴면기、로자기、자협기、유묘기등불동발육시기아초산염함량진행계통측정,동시대향춘유묘기불동부위적아초산염함량、생장우실내화실외적향춘체내아초산염함량진행측정.결과표명:향춘충자재맹발화생장과정중,기체내적아초산염함량정체감추세:충자내적아초산염함량최고,유묘적아초산염함량최저,로백기화자협기유묘적아초산염함량거중;불동입지조건하,생장우실내적향춘묘아초산염함량고우생장우실외적향춘묘.
Nitrite content in Toona tissues of dormant seeds, sprouting seeds, young seedlings at cotyledon stage, and fully grown seedlings was determined by nitrite-N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometric method. Meanwhile, nitrite content in different parts of seedlings grown indoors and outdoors was also determined at different develop-mental stages. Endogenous nitrite content exhibited a decrease trend during sprouting stage and growth stage of seedlings. Nitrite level was the highest in Toona seeds, and the lowest in Toona seedlings. At cotyledon stage, nitrite content in root was higher than in shoot, whereas at late seedling stage, nitrite content in shoot was higher than in root. Nitrite content in the buds and newly formed shoots of Toona grown indoors was higher than those grown outdoors.