【摘要】 以研究乙烯在月季切花开花和衰老进程中的作用为目的 ,以 14个切花月季品种为试材 ,首先探讨了乙烯和乙烯抑制剂处理对切花开花和衰老进程的影响。结果表明 :乙烯和乙烯抑制剂处理对不同乙烯变化类型切花月季品种的开花和衰老进程有不同的影响效果 ,类似非跃变型切花‘唐娜小姐’表现出典型的非跃变型切花的特征 ,但是类似跃变型品种和类似末期上升型品种却有复杂的表现 ,分别表现为促进、抑制和不敏感。在此基础上 ,探讨了乙烯和乙烯抑制剂处理对类似跃变型品种‘萨蔓莎’和‘红衣主教’、类似非跃变型品种‘唐娜小姐’以及类似末期上升型品种‘黄金时代’乙烯生成量的影响。结果表明 :‘萨蔓莎’和‘红衣主教’分别表现为乙烯的自我催化和自我抑制。乙烯和乙烯抑制剂处理对类似非跃变型品种‘唐娜小姐’的乙烯生成量无影响。类似末期上升型品种‘黄金时代’ ,表现为典型的负反馈调节。这些结果说明月季切花对乙烯的反应非常复杂 ,在开花衰老进程中呈现不同乙烯变化类型的品种对乙烯的反应差别很大 ,不能简单地根据内源乙烯生成量的变化动态对不同的切花月季品种进行类型划分。更多还原

【Abstract】 To investigate the effects of ethylene and its inhibitors on flower opening and senescence of cut roses,. the cut rose flowers of 14 cultivars were treated with ethylene,AOA(aminooxyacetic acid),an ACC synthase inhibitor,STS(silvet thiosulfate),an ethylene action inhibitor,and PPOH(cisptopenylphosphnic acid),an ethylene autocatalysis inhibitor.The results showed that the effects of ethylene on flower opening and senescence of different cut roses were quite different depending on the cultivars:acceleration,inhibition and insensitivity. On the basis of results above,`Samantha’and’Kardinal’,analogical climacteric cultivars, ’Prima Donna’,analogical non-climacteric cultivars,and’Golden Times’,analogical cultivars which increase during later stage,were used to test the effects of ethylene and its inhibitors on ethylene production.The results showed that in’Samantha’,analogical climacteric types,ethylene production was increased by ethylene,acting as ethylene-autocatalysis,while ethylene production was inhibited by ethylene in’Kardinal’,acting as ethylene-autoinhibition.For the’Prima Donna’,no effect was obtained,just like the characters of non-climacteric cut flowers.As to’Golden Times’,the reaction is negative feedback.These results above suggest that the responses of cut roses to ethylene are very complicated,and it would be very difficult to classify the climacteric type of cut roses only according to the change of ethylene production during flower opening and senescence.更多还原