【摘要】 以2 a生的也门铁及其嵌合体变异品种‘金心也门铁’和‘金边也门铁’为试材,研究了也门铁及其嵌合体的主要叶绿素合成前体物质。结果表明:‘金边也门铁’叶片变异(黄色)部分叶绿素合成在PBG与UrogenⅢ之间受阻,‘金心也门铁’叶片变异(混合)部分的叶绿素合成在UrogenⅢ与原卟啉之间受阻,导致颜色发生变化;‘金边也门铁’叶片绿部、‘金心也门铁’叶片绿部及也门铁三者之间的叶绿素a、b及叶绿素总含量差异不大,所以三者都呈绿色。更多还原

【Abstract】 Using two-year leaves of three varieties(Dracaena fragrans(L.)Ker-Gawl.)and its two chimeras: D.fragrans cv.lindenii.and D.fragrans cv.massangeanaas test materials,the contents of chlorophyll synthesis precursors were studied.The results showed that the chlorophyll synthesis was hampered between PBG and UrogenⅢ in D.fragrans cv.lindenii.,between UrogenⅢ and Proto Ⅸ in D.fragrans cv.massangeana,which caused leave-color differentiation.The content difference of chlorophyllide(Chlide),Chl a and Chl b was little in the green part of D.fragrans cv.lindenii.’s leaf,the green part of D.fragrans cv.massangeana’s leaf and the leaf of D.fragrans,so they looked green.更多还原