春季生态因子对博落回光合作用的影响
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摘要
以当年生博落回植株为实验材料,采用Li-6400测定博落回的光合特征及其与主要环境因子的关系。结果显示:(1)博落回叶片Pn日变化曲线为典型的双峰特征,两个峰值分别出现在上午10:00点和中午13:00点左右;(2)博落回的光补偿点和光饱和点分别是19.73和938.67μmol photons·m~(-2)·s~(-1);(3)博落回叶片Pn与其Tr、Ta、PAR、Gs存在着正相关,且与PAR正相关程度最高;与Ci、RH、Ca呈负相关,其中与Ca对其影响显著;(4)影响博落回叶片Pn变化的主要决定生态因子是Tr,限制因子是RH。研究表明,博落回对光强有较强的适应能力,属于喜光植物。
Li-6400 was used to determine the photosynthetic characteristics of Macleaya cordata and its relationship with the main environmental factors on sunny days by selecting the one-year M.cordata. The results showed:(1) the diurnal variation curve of Pn was characteristic of a bimodal pattern with two peaks appeared respectively at about 10:00 a.m. and about 13:00 p.m.;(2) The LCP of M.cordata is 19.73μmol photons·m~(-2)·s~(-1) and the LSP of M.cordata is 938.67μmol photons·m~(-2)·s~(-1);(3) Pn was positively correlated with Tr, Ta, PAR and Gs, and had the closest relationship with PAR, while negatively correlated with Ci, Ca and RH, and significantly influenced by Ca;(4) The main physiological factor affecting the Pn variation of M.cordata was Tr, while RH was the limiting factor. The study indicated that M.cordata has a strong adaptability to light intensity and it is a heliophilous plant.
Li-6400 was used to determine the photosynthetic characteristics of Macleaya cordata and its relationship with the main environmental factors on sunny days by selecting the one-year M.cordata. The results showed:(1) the diurnal variation curve of Pn was characteristic of a bimodal pattern with two peaks appeared respectively at about 10:00 a.m. and about 13:00 p.m.;(2) The LCP of M.cordata is 19.73μmol photons·m~(-2)·s~(-1) and the LSP of M.cordata is 938.67μmol photons·m~(-2)·s~(-1);(3) Pn was positively correlated with Tr, Ta, PAR and Gs, and had the closest relationship with PAR, while negatively correlated with Ci, Ca and RH, and significantly influenced by Ca;(4) The main physiological factor affecting the Pn variation of M.cordata was Tr, while RH was the limiting factor. The study indicated that M.cordata has a strong adaptability to light intensity and it is a heliophilous plant.
引文
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[2]中国植物志编委会.中国植物志[M].北京:科学出版社,1999:78.
[3]邹序安,陆引罡.资源植物博落回在石漠化防治中的生态与经济效益探讨[J].湖北农业科学,2009(4).
[4]刘浩,谈满良,单体江,等.博落回生物碱与生物活性及其应用[J].中国野生植物资源,2009(6).
[5]郁建平,赵东亮,孟祥斌,等.博落回生物碱对8种真菌的抑菌作用[J].山地农业生物学报,2006,25(1):89-911.
[6]樊淑莲,焦峰,张圆.博落回总生物碱对动物移植性肿瘤的作用研究[J].陕西肿瘤医学,2000,8(3):149-1741.
[7]郁建生.博落回制剂对禽霍乱、仔猪白痢的对比治疗试验[J].黑龙江畜牧兽医,2007(2):91-931.
[8]郭振,黄成林.春季生态因子对武夷四照花光合作用的影响研究[J].安徽农学通报,2015(9).
[9]荆天.四种彩色植物光合生理生态特性的研究[D].合肥:安徽农业大学,2015.
[10]郭振,黄成林.武夷四照花光合生理生态特性的研究[D].合肥:安徽农业大学,2013.
[11]FARQUAR D,SHARKEY D.Stomata conductance and photosynthesis[J].Annual Review of PlantPhysiology,1982,33(1):317-345.
[12]管新新.八种地被植物光合生理生态特性及应用的研究[D].合肥:安徽农业大学,2010.
[13]王雁.14种地被植物光能利用特性及耐阴性比较[J].浙江林学院学报,2005(1).
[14]姚侠妹,偶春,等.引种地被石竹光合特征与生理生态因子的关系[J].西北植物学报,2012,32(8):1639-1647.
[15]林平,李吉跃,陈崇.银杏光合生理生态特性研究[J].北京林业大学学报,2008(11).
[16]李新国,许大全,孟庆伟.银杏叶片光合作用对强光的响应[J].植物生理学报,1998(04).
[17]郭延平.银杏光合特性的研究[J].植物生理学报,2008(04).
[18]SALVUCCI E,CRAFTS J.Inhibition of photosynthesis by heat stress:the activation state of Robison as a limiting factor in photosynthesis[J].Physiologic Plant arum,2004,120(2):179-186.
[19]龚伟.湿地松幼树冠层光合作用日变化及其影响因素[J].浙江林学院学报,2006(1).
[20]黄春燕,吴卫,郑有良.鱼腥草光合蒸腾特性及影响因素的分析[J].西北植物学报,2006(05).
[21]娄丽华,罗韧,杨清钰.香桂、元宝枫、银荆光合特性研究[J].四川林业科技,2001,22(2):67-70.