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当前位置: 首页 > 文章 > 牡丹对不同强度和频度去叶的补偿性生长响应 安徽农业科学 2008,36 (27) 30-31+34
Position: Home > Articles > Compensory Growth Responses to Defoliation of Peony under Different Intensity and Frequency Conditions Journal of Anhui Agricultural Sciences 2008,36 (27) 30-31+34

牡丹对不同强度和频度去叶的补偿性生长响应

作  者：
赵威;周大彪;刘改秀
单  位：
中国洛阳国家牡丹基因库;河南科技大学农学院
关键词：
牡丹;去叶强度;去叶频度;补偿性生长
摘  要：
[目的]找出有利于牡丹补偿性生长的最佳条件。[方法]对牡丹进行不同强度和频度去叶处理,观察幼苗去叶后的地上干物质积累量、更新芽数、茎叶比及剩余叶片叶绿素浓度的变化。[结果]20 d/次的去叶频度、40%~60%去叶强度时,牡丹的累积生物量最大;10d/次的去叶频度、60%~80%去叶强度时,更新芽数目最多;轻中度去叶(20%~60%),茎叶比显著低于对照;20 d/次去叶频度、40%~60%去叶强度时,剩余叶片的叶绿素浓度显著高于对照。[结论]适当的去叶强度(60%)和较低的去叶频度(20 d/次)最有利于牡丹的生长和再生,表现为超补偿性生长。
译  名：
Compensory Growth Responses to Defoliation of Peony under Different Intensity and Frequency Conditions
作  者：
ZHAO Wei et al(College of Agronomy,Henan University of Science & Technology,Luoyang,Henan 471003)
关键词：
Peony;Defoliation intensity;Defoliation frequency;Compensatory growth
摘  要：
[Objective]It was aimed to find optimum condition for compensatory growth of peony.[Method]The different defoliation intensity and frequencies of penoy were conducted to observe accumulative aboveground dry matter,regeneration bud number,stem-leaf ration and chlorophyll concentration change in residual leaves.[Result]When the defoliation was conducted every 20 d once and defoliaton frequency was from 40%-60%,the accumulative biomass was biggest while when When the defoliation was conducted every 10d once and defoliation frequency was from 60%-80% the regeneration bud number was most.The stem-leaf ratio of mild and moderate defoliation(20%-60%) was lower than that of control group.When the defoliation was conducted every 20 d once and defoliation frequency was from 40%-60%,the chlorophyll concentration in residual leaves was obviously higher than that of control group.[Conclusion]The proper defoliation intensity(60%) and lower defoliation frequency(defoliation was conducted every 20 d) were most favorable for growth and regeneration of peony which was compensatory growth.

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