叶用莴苣高温抽薹过程中茎长和花芽分化的观察
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摘要
【目的】观察并分析叶用莴苣高温抽薹过程中茎长变化和花芽分化的进程。【方法】以叶用莴苣耐抽薹品种GB-4为材料,通过石蜡切片方法观察常温20℃/13℃(日/夜)及高温33℃/25℃(日/夜)条件下16、24、32、40、48、56、64d的茎长和花芽分化变化。【结果】经过高温处理后,茎抽长较快,茎顶端生长点由圆锥形逐渐加宽变平,变为半球形,在第32天进入花芽分化始期,第40天花芽基部凸起,第64天分化出总苞片;而常温条件下的叶用莴苣直到第64天才开始花芽分化,茎长变化缓慢。【结论】综合茎长和花芽分化进程的变化,得知叶用莴苣品种GB-4在高温处理第32天开始抽薹。
【Objective】In order to observe the process of flower bud differentiation and the stem height of leaf lettuce treated with high temperature.【Methods】Leaf lettuce of G-B4(bolting resistant)was selected as material,which was treated by normal temperature 20℃/13℃(day/night)and high temperature 33 ℃/25 ℃(day/night).The flower bud differentiation was observed using paraffin section technology in 16,24,32,40,48,56,64 d.【Results】The results showed that after high temperature treatment,the stem length was faster,the growth point of the stem tip gradually widened and flattened in a hemispherical shape.On the 32 d,the flower bud differentiation began.On the 40 d,the base of the flower bud was bulgesd.On the64 d,the total bracts were occured,while the lettuce under normal temperature conditions did not start flower bud differentiation until the 64 d,and the stem length changed slowly.【Conclusion】By observing differentiation of stem and buds,it was comprehensively found that the tamper resistant lettuce GB-4 began to bolting at 32 dunder high-temperature treatment.
【Objective】In order to observe the process of flower bud differentiation and the stem height of leaf lettuce treated with high temperature.【Methods】Leaf lettuce of G-B4(bolting resistant)was selected as material,which was treated by normal temperature 20℃/13℃(day/night)and high temperature 33 ℃/25 ℃(day/night).The flower bud differentiation was observed using paraffin section technology in 16,24,32,40,48,56,64 d.【Results】The results showed that after high temperature treatment,the stem length was faster,the growth point of the stem tip gradually widened and flattened in a hemispherical shape.On the 32 d,the flower bud differentiation began.On the 40 d,the base of the flower bud was bulgesd.On the64 d,the total bracts were occured,while the lettuce under normal temperature conditions did not start flower bud differentiation until the 64 d,and the stem length changed slowly.【Conclusion】By observing differentiation of stem and buds,it was comprehensively found that the tamper resistant lettuce GB-4 began to bolting at 32 dunder high-temperature treatment.
引文
[1]杨景爱,康杰,谷建田.氯化钙对高温胁迫下叶用莴苣幼苗生理生化特性影响[J].北京农学院学报,2016(4):31-34
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[6]苏贺楠,张利利,刘超杰,韩莹琰,杜巍,范双喜,郝敬虹.高温诱导叶用莴苣抽薹过程中细胞形态的变化[J].北京农学院学报,2016(2):53-57
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[8]张利利,郝敬虹,韩莹琰,刘超杰,苏贺楠,李盼盼,孙燕川,范双喜.温度对叶用莴苣春化的影响[J].应用生态学报,2016(11):3600-3606
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[10]宋红霞,付超,侯雷平,李梅兰.普通白菜石蜡切片染色方法筛选及花芽分化形态学鉴定[J].江苏农业科学,2018(2):88-91
[11]艾星梅,何睿宇,胡燕芳.马铃薯花芽分化与内源激素动态变化的关系[J].西北植物学报,2018(1):87-94
[12]李风童,陈素梅,陈发棣,房伟民刘兆磊张飞.托桂花型菊花花发育的组织结构观察[J].园艺学报,2010,37(12):1961-1968
[2]刘慧,郝敬虹,韩莹琰,刘超杰,苏贺楠,范双喜.高温诱导叶用莴苣抽薹过程中内源激素含量变化分析[J].中国农学通报,2014(25):108-114
[3]于锡宏,蒋欣梅,张文博.萝卜、白菜先期抽薹原因及预防[J].种子世界,2014(8):63-64
[4]刘莎莎.光周期及低温处理对菠菜抽薹的影响[D].泰安:山东农业大学,2010
[5]王辉,顾文亮,庄辉发,赵青云,朱自慧,宋应辉.不同外源激素对香草兰花芽分化的影响[J].热带农业科学,2016(11):72-76
[6]苏贺楠,张利利,刘超杰,韩莹琰,杜巍,范双喜,郝敬虹.高温诱导叶用莴苣抽薹过程中细胞形态的变化[J].北京农学院学报,2016(2):53-57
[7]范双喜,谷建田,韩莹琰.园艺植物高温逆境生理研究进展[J].北京农学院学报,2003(6):147-151
[8]张利利,郝敬虹,韩莹琰,刘超杰,苏贺楠,李盼盼,孙燕川,范双喜.温度对叶用莴苣春化的影响[J].应用生态学报,2016(11):3600-3606
[9]苏贺楠,郝敬虹,张利利,韩莹琰,刘超杰,范双喜.高温诱导叶用莴苣抽薹过程中碳氮的变化分析[J].核农学报,2016,30(8):1558-1567
[10]宋红霞,付超,侯雷平,李梅兰.普通白菜石蜡切片染色方法筛选及花芽分化形态学鉴定[J].江苏农业科学,2018(2):88-91
[11]艾星梅,何睿宇,胡燕芳.马铃薯花芽分化与内源激素动态变化的关系[J].西北植物学报,2018(1):87-94
[12]李风童,陈素梅,陈发棣,房伟民刘兆磊张飞.托桂花型菊花花发育的组织结构观察[J].园艺学报,2010,37(12):1961-1968