不同木槿品种抗寒性研究
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摘要
[目的]研究不同木槿品种在苏北地区气候适应能力。[方法]在-25～-5℃低温处理下,通过测定15个木槿品种枝条的相对电导率,结合生长恢复试验下扦插枝条成活率的调查,分析了15个木槿品种抗寒性的差异。[结果]随着处理温度的降低,各木槿品种枝条相对电导率均呈"S"型上升趋势,不同品种间枝条相对电导率有差异,15个木槿品种半致死温度(LT_(50))在-23.64～-16.57℃。[结论]供试品种中2号和6号冬季需一定防护措施,其他木槿品种在苏北地区气候条件下无需保护措施即可过冬。
[Objective]In order to study the climate adaptability of different Hibiscus syriacus varieties in Northern Jiangsu.[Method]The relative conductivities of 15 Hibiscus syriacus branches were determined by low temperature treatment at-25～-5℃,and the survival rate of cuttings under the growth recovery test was investigated. The differences in cold resistance of 15 Hibiscus syriacus varieties were analyzed.[Result]The relative conductivities of the branches of the Hibiscus syriacus varieties increased with the decrease of treatment temperature,and the relative conductivities of the branches varied among different varieties. The semi-lethal temperature(LT_(50))of 15 Hibiscus syriacus varieties were-23.64～-16.57℃.[Conclusion]In the winter,the 2 nd and 6 th varieties of the tested varieties need certain protective measures. Other Hibiscus syriacus varieties could survive the winter without the protection measures under the climatic conditions in Northern Jiangsu.
[Objective]In order to study the climate adaptability of different Hibiscus syriacus varieties in Northern Jiangsu.[Method]The relative conductivities of 15 Hibiscus syriacus branches were determined by low temperature treatment at-25～-5℃,and the survival rate of cuttings under the growth recovery test was investigated. The differences in cold resistance of 15 Hibiscus syriacus varieties were analyzed.[Result]The relative conductivities of the branches of the Hibiscus syriacus varieties increased with the decrease of treatment temperature,and the relative conductivities of the branches varied among different varieties. The semi-lethal temperature(LT_(50))of 15 Hibiscus syriacus varieties were-23.64～-16.57℃.[Conclusion]In the winter,the 2 nd and 6 th varieties of the tested varieties need certain protective measures. Other Hibiscus syriacus varieties could survive the winter without the protection measures under the climatic conditions in Northern Jiangsu.
引文
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[8]刘玉艳,于凤鸣,韩淑丽.影响木槿硬枝扦插若干生理指标的研究[J].林业科技,2002(5):4-7.
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[13]刘从霞,邓明净,王文凤,等.5种李属彩叶树木抗寒性研究[J].河北农业大学学报,2007(5):36-39.
[14]缴丽莉,路丙社,白志英,等.四种园林树木抗寒性的比较分析[J].园艺学报,2006(3):667-670.
[2]李文明,辛建攀,魏驰宇,等.植物抗寒性研究进展[J].江苏农业科学,2017,45(12):6-11.
[3]徐燕,薛立,屈明.植物抗寒性的生理生态学机制研究进展[J].林业科学,2007(4):88-94.
[4]彭筱娜,易自力,蒋建雄.植物抗寒性研究进展[J].生物技术通报,2007(4):15-18.
[5]张道敬,张偲,吴军,等.药用木槿属植物化学成分和药理作用研究进展[J].中南药学,2005(3):158-161.
[6]刘小冬,姜卫兵,翁忙玲.论木槿属树种及其在园林绿化中的应用[J].中国农学通报,2008(8):315-320.
[7]李秀芬,朱建军,张德顺.木槿属树种应用与研究现状分析[J].上海农业学报,2006(2):108-110.
[8]刘玉艳,于凤鸣,韩淑丽.影响木槿硬枝扦插若干生理指标的研究[J].林业科技,2002(5):4-7.
[9] STER GIOS,B.G.,HOWELL,G.S. Evaluation of viability tests for cold stressed plants[J]. Journal of the American Society for Horticultural Science.1973,98(4):325-330.
[10]简令成.生物膜与植物寒害和抗寒性的关系[J].植物学通报,1983(1):19-25.
[11]唐伟.新引进木槿品种扦插技术研究和品种评价[D].北京:北京林业大学,2008.
[12]崔帅,赵兰勇,李承水,等.卫矛属3种常绿阔叶树木抗寒性研究[J].中国农学通报,2012,28(7):17-20.
[13]刘从霞,邓明净,王文凤,等.5种李属彩叶树木抗寒性研究[J].河北农业大学学报,2007(5):36-39.
[14]缴丽莉,路丙社,白志英,等.四种园林树木抗寒性的比较分析[J].园艺学报,2006(3):667-670.