摘要
【目的】研究切花菊品种‘神马’短日处理时植株营养生长天数对其花芽分化及切花品质的影响,为高品质切花菊的生产提供指导。【方法】对通过分期扦插、分期定植获得的不同营养生长天数植株进行短日诱导,观察花芽分化和开花进程,测量品质指标。【结果】营养生长天数越少花芽起始越迟。营养生长天数为0d(定植当天短日处理)的植株从成花诱导到花芽起始需18d,显著长于成花诱导的最短反应时间4d。植株营养生长天数越少,完成花芽分化所需的时间越长、花期越迟、切花品质越差。【结论】植株营养生长天数对切花菊‘神马’花芽分化与品质有显著影响。4d是‘神马’对成花诱导的最短反应时间,21d是‘神马’达到成熟的成花感受态的营养生长天数。要获得符合出口标准的高品质切花,植株营养生长天数要达到28d以上才能进行成花诱导。
【Objective】Effects of vegetative growth days on flower bud differentiation and quality of cut chrysanthemum cv. ‘Jinba’ （Dendranthema×grandiflorum Ramat.） were studied.【Method】Plants of different vegetative growth days were obtained by modulating the date of cutting and planting. These plants were subsequently treated with the short-day induction on the same day to induce flower bud differentiation. The process of flower bud differentiation and flowering was observed,the quality of cut chrysanthemum flower was also evaluated.【Result】The results showed that the less of vegetative growth days were,the later the flower bud initiated. When plant of vegetative growth days of 0 day was treated,18 days was essential for the process of flower bud induction to flower bud initiation,which is obviously longer than 4 days which was the shortest response time to bud induction. The less of vegetative growth days of the ‘Jinba’ was,the more days are required for the process of flower bud initiated to flower bud differentiation,delayed blossom date and the poorer quality of flowers were also observed.【Conclusion】Vegetative growth days are vital for flower bud initiation and quality of cut chrysanthemum. Four days were the shortest days for responding to short-day inducing treatment,and plant of vegetative growth of 21 days was mature floral competence state of ‘Jinba’. In order to meet the standard for export of cut chrysanthemum,it should take 28 days for vegetative growth days before flower bud induction.
出处
《中国农业科学》
CAS
CSCD
北大核心
2008年第6期1755-1760,共6页
Scientia Agricultura Sinica
基金
江苏省科技厅高技术研究项目(BG2004310)
江苏省科技攻关项目(BE2007305)
江苏省农业三项工程项目[Sx(2005)072][Sx(2006)124]
上海市农委重点攻关项目[(2004)D3-1]
关键词
切花菊
植株营养生长天数
花芽分化
切花品质
Cut chrysanthemum
Vegetative growth days
Flower bud differentiation
Flower quality
