间作遮荫对花生光合作用及叶绿素荧光特性的影响
以花生单作为对照,设置30、35、40、45、50 cm 5个木薯花生间作行距,播种90 d后测定花生叶片的净光合速率、叶绿素含量及叶绿素荧光参数。结果表明,与单作对照相比,间作花生的光合速率(Pn)、叶绿素含量(Chl a+b)、初始荧光(Fo)、光化学猝灭系数(qP)降低;最大荧光(Fm)、可变荧光(Fv)、最大光化学效率(Fv/Fm)、潜在光化学活性(Fv/Fo)、非光化学淬灭系数(qN)升高;且窄行距(30~35 cm)处理的Pn、Fv、Fv/Fm、Fv/Fo、表观光合电子传递速率(ETR)、实际光化学量子效率(Yield)高于宽行距(45~50 cm)处理。间作遮荫使花生功能叶片的光...
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Published in | 西南农业学报 Vol. 24; no. 5; pp. 1703 - 1707 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
广西作物遗传改良生物技术重点开放实验室,广西南宁530007%广西农业科学院经济作物研究所,广西南宁,530007%广西大学农学院,广西南宁,530005%广西作物遗传改良生物技术重点开放实验室,广西南宁,530007
2011
广西农业科学院经济作物研究所,广西南宁530007 |
Subjects | |
Online Access | Get full text |
ISSN | 1001-4829 |
DOI | 10.3969/j.issn.1001-4829.2011.05.018 |
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Summary: | 以花生单作为对照,设置30、35、40、45、50 cm 5个木薯花生间作行距,播种90 d后测定花生叶片的净光合速率、叶绿素含量及叶绿素荧光参数。结果表明,与单作对照相比,间作花生的光合速率(Pn)、叶绿素含量(Chl a+b)、初始荧光(Fo)、光化学猝灭系数(qP)降低;最大荧光(Fm)、可变荧光(Fv)、最大光化学效率(Fv/Fm)、潜在光化学活性(Fv/Fo)、非光化学淬灭系数(qN)升高;且窄行距(30~35 cm)处理的Pn、Fv、Fv/Fm、Fv/Fo、表观光合电子传递速率(ETR)、实际光化学量子效率(Yield)高于宽行距(45~50 cm)处理。间作遮荫使花生功能叶片的光合速率和叶绿素含量降低,叶绿素荧光参数的一系列变化是花生对间作遮荫的适应性反应。 |
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Bibliography: | Peanut; Intercropping; Shading; Photosynthesis; Chlorophyll fluorescence 51-1213/S The net photosynthetic rate,chlorophyll content and chlorophyll fluorescence characteristic of peanut (Arachis hypogaea L.) were determined under different inter-row space of cassava/peanut intercropping(30,35, 40,45,50 cm) and monocropping in the field after 90 d of sowing.The result showed that the net photosynthetic rate and chlorophyll(Chl a+b) content,initial fluorescence(Fo),photochemical quenching(qP) in leaves of peanut intercropped with cassava decreased.However,the maximum fluorescence(Fm),variable fluorescence(Fv), maximum photochemical efficiency(Fv/Fm),potential activity of photosystem II(Fv/Fo,non-photochemical quenching(qN) of intercropped peanut increased.Moreover,Pn,Fv,Fv/Fm,Fv/ Fo,apparent electron transport rates(ETR) and effective quantum yield of photosystem II(Yield) of peanut intercropped under 30-35 cm inter-row treatment were more than those under 40-45 cm row space.In conclusion,the shading of intercropp |
ISSN: | 1001-4829 |
DOI: | 10.3969/j.issn.1001-4829.2011.05.018 |