不同矮化剂对何首乌叶片光合日变化的影响
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摘要
为何首乌高产优质栽培提供理论依据,以何首乌为研究材料,采用单因素试验研究大田条件下3种矮化剂(多效唑、烯效唑和矮壮素)对何首乌叶片光合日变化的影响。结果表明:3种矮化剂处理何首乌叶片的净光合速率均成双峰曲线,光合"午休"现象出现在11:00左右,峰值出现在9:00和13:00,喷施烯效唑何首乌叶片净光合速率均最大;喷施烯效唑和矮壮素何首乌叶片的蒸腾速率日变化与净光合速率日变化趋势一致,呈双峰曲线;喷施多效唑何首乌叶片的蒸腾速率日变化呈单峰曲线,峰值出现在15:00。3种处理何首乌的光合有效辐射均呈单峰曲线;气孔导度总体均呈下降趋势,其中,喷施烯效唑的处理降幅最大,为98.9%;胞间CO2浓度变化趋势基本相似,三者间无明显差异。
To provide theoretical basis for high yield and high quality cultivation of Polygonum multiflorum,the effects of three different dwarfing agents(paclobutrazol,uniconazole and chlormequat)on the diurnal variation of photosynthesis in leaves of P.multiflorum were studied through single factor experiment in the field.Results:The net photosynthetic rate of the three treatments showed a bimodal curve.The photosynthetic midday depression appeared at about 11:00,and the peak appeared at 9:00 and13:00.Leaf net photosynthetic rate of P.multiflorum sprayed with uniconazole is the maximum.The diurnal variation of transpiration rate in leaves sprayed with uniconazole and chlormequat was consistent with the diurnal variation of net photosynthetic rate and showed a double-peak curve,the diurnal variation of transpiration rate of leaves sprayed with paclobutrazol showed a single peak curve and the peak appeared at 15:00.The photosynthetic active radiation of three treatments of P.multiflorumshowed a single peak curve.The stomatal conductance of the three treatments showed an overall downward trend,and the treatment with uniconazole had the largest decrease,a 98.9%decreasing amplitude.The change trend of Ci in the three treatments was similar,no significant difference observed among the three treatments.
To provide theoretical basis for high yield and high quality cultivation of Polygonum multiflorum,the effects of three different dwarfing agents(paclobutrazol,uniconazole and chlormequat)on the diurnal variation of photosynthesis in leaves of P.multiflorum were studied through single factor experiment in the field.Results:The net photosynthetic rate of the three treatments showed a bimodal curve.The photosynthetic midday depression appeared at about 11:00,and the peak appeared at 9:00 and13:00.Leaf net photosynthetic rate of P.multiflorum sprayed with uniconazole is the maximum.The diurnal variation of transpiration rate in leaves sprayed with uniconazole and chlormequat was consistent with the diurnal variation of net photosynthetic rate and showed a double-peak curve,the diurnal variation of transpiration rate of leaves sprayed with paclobutrazol showed a single peak curve and the peak appeared at 15:00.The photosynthetic active radiation of three treatments of P.multiflorumshowed a single peak curve.The stomatal conductance of the three treatments showed an overall downward trend,and the treatment with uniconazole had the largest decrease,a 98.9%decreasing amplitude.The change trend of Ci in the three treatments was similar,no significant difference observed among the three treatments.
引文
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[2]南京中医药大学.中药大辞典[M].2版.上海:上海科学技术出版社,2006:1588.
[3]中国药材公司.中国中药资源志要[M].北京:科学出版社,1994:227.
[4]陶俊,陈鹏,佘旭东.银杏光合特性的研究[J].园艺学报,1999,26(2):157-160.
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[6]王庆江,温险良,贾彦丽.赞皇大枣幼树叶片光合特性的研究[J].河北农业大学学报,2002,25(增刊):120-121.
[7]罗瑞芝,贾伟,赵利斌,等.何首乌研究进展[J].中草药,2005,36(7):1097-1100.
[8]刘学彬,段松枝.何首乌高产栽培技术[J].农牧产品开发,1995(9):42-43.
[9]梅雪,余刘勤,陈小云,等.何首乌化学成分和药理作用的研究进展[J].药物评价与研究,2016,39(1):122-131.
[10]管淑玉,苏薇薇.何首乌的化学成分和药理作用研究进展[J].中南药学,2008(4):454-455.
[11]苏玮,郭群.何首乌的现代药理研究概况[J].中草药,1997,28(2):119-121.
[12]应久皓,周学优,朱秀琴.何首乌炮制品药理临床研究[J].中国中药杂志,1992,17(12):722-725.
[13]谭远友.野生与栽培何首乌的质量比较[J].中草药,1998,29(6):375-378.
[14]张丽艳,杨玉琴,高言明.贵州不同产地野生及栽培何首乌中二苯乙烯苷含量比较[J].中国中药杂志,2003,28(8):786-787.