CAJ | 학술논문

为了明确干旱胁迫对四季锦带、红王子锦带、紫叶锦带和金叶锦带4个品种叶绿素质量分数和荧光参数的影响，采用田间持续干旱法，测定了各参数的变化曲线。结果表明：在干旱胁迫下，各品种叶绿素质量分数变化规律较一致，均呈不规则波动，其中四季锦带和金叶锦带、红王子锦带和紫叶锦带叶绿素质量分数曲线的变化趋势两两相似；胁迫显著降低了PSⅡ单位面积有活性反应中心数量RC／CSo、光化学性能指数PI，A，B，S值；荧光诱导曲线中K点相对可变荧光（Wk）和J点相对可变荧光（Vj）的值均较对照不同程度增加；暗适应下初始荧光Fo 值、PSⅡ最大光化学效率Fv／Fm 值均呈现下降趋势。总之，干旱胁迫下4个锦带花品种PSⅡ光化学活性受到不同程度的抑制，四季锦带对干旱的响应最强烈，其次是紫叶锦带和金叶锦带，红王子锦带最弱。
위료명학간한협박대사계금대、홍왕자금대、자협금대화금협금대4개품충협록소질량분수화형광삼수적영향，채용전간지속간한법，측정료각삼수적변화곡선。결과표명：재간한협박하，각품충협록소질량분수변화규률교일치，균정불규칙파동，기중사계금대화금협금대、홍왕자금대화자협금대협록소질량분수곡선적변화추세량량상사；협박현저강저료PSⅡ단위면적유활성반응중심수량RC／CSo、광화학성능지수PI，A，B，S치；형광유도곡선중K점상대가변형광（Wk）화J점상대가변형광（Vj）적치균교대조불동정도증가；암괄응하초시형광Fo 치、PSⅡ최대광화학효솔Fv／Fm 치균정현하강추세。총지，간한협박하4개금대화품충PSⅡ광화학활성수도불동정도적억제，사계금대대간한적향응최강렬，기차시자협금대화금협금대，홍왕자금대최약。
We explored the response of chlorophyll content and chlorophyll fluorescence parameter of four cultivated varieties of Weigela florida to the drought stress, and determined the change curve of each variety of the content of chlorophyll and chlorophyll fluorescence parameters by continuous drought in the field.The change rule of chlorophyll a, b, ( a+b) con-tents of various varieties was irregular.The change curve of Weigela florida cv.Red Prince and W.florida cv.Foliia Pur-pure showed rise-lower-rise, while W.florida Bunge A.DC and W.‘Red Prince’+vat showed“lower-rise”.The density of RC/CSo and PI,A,B,S of the various varieties significantly decreased compared with the control under drought stress.Wk and Vj increased compared with the control in the O-J-I-P chlorophyll fluorescence transients.Both Fo and Fv/Fm decreased compared with the control.The resistance drought ability of four cultivated variety were restrained to various degrees under drought stress, and the most obvious response to the drought stress was W.florida Bunge A.DC, followed by W.florida cv. Foliia Purpureis, W.‘Red Prince’+vat, and W.florida cv.Red Prince.