摘要
为研究无腋芽型切花菊品种‘深志＇摘心处理对其腋芽萌发性状及内源GA_3浓度的影响,探索切花菊腋芽萌发规律。通过电照保证‘深志＇进行营养生长,摘心后观察腋芽萌发规律和分期采集叶片样本,进行内源GA_3浓度检测。结果表明：摘心后20 d内,叶片SY1相对应的腋芽首先萌发,叶片SY3相对应的腋芽后萌发,叶片SY5、SY10和SY15相对应的腋芽一直没有萌发。各叶片内源GA_3浓度都有所增加,叶片SY1和SY3的内源GA_3浓度的变化幅度较大,分别增加了41.9127和31.7153 ng/g;叶片SY5、SY10和SY15的内源GA_3浓度的变化幅度很小,平均增加11.458 ng/g。叶片SY1和SY3内源GA_3浓度与其相对应的腋芽萌发长度都呈显著正相关,相关系数分别为r=0.89982~＊,r=0.90318~＊。
Effect of pinching on axillary buds characters and the concentration of endogenous GA_3 of cut chrysanthemum cv.＇shenzhi＇ were studied.Explore the law of axillary buds of cut chrysanthemum.Guaranteed vegetative growth of ＇shenzhi＇by electric light,observe the laws of axillary buds and collected leaf samples in phases after pinching of detection of endogenous GA_3 concentration.The results showed that 20 days after pinching,the axillary first germination which corresponding leaves SY1 and the axillary of leaves SY3 corresponding was latter,leaves SY5,SY10 and SY15 corresponding axillary had not germinated The concentration of GA_3 have increased in each leaf,the variations of endogenous GA_3 was bigger in leaves SY1 and SY3,increased by 41.9127 and 31.7153 ng/g;the variations of endogenous GA_3 was less in leaves SY5,SY10 and SY15,average increase of 11.458 ng/g.It was significant positive correlation between endogenous GA_3 concentration and length of the corresponding in leaves SY1 and SY3,the correlation coefficient was r=0.89982＊ and r=0.90318＊.
出处
《北方园艺》
CAS
北大核心
2011年第4期107-110,共4页
Northern Horticulture
基金
国家科技部星火计划资助项目(2009GB2B000076)
关键词
切花菊
摘心
腋芽萌发性状
内源GA_3浓度
cut chrysanthemum
pinching
axillary buds characters
concentration of endogenous GA_3
