地涌金莲及红苞地涌金莲对光和CO2的响应
比较分析了地涌金莲原种及红苞地涌金莲变种的光响应和CO:响应特征以及叶绿素含量等指标。结果表明:(1)在砌—删R中,地涌金莲原种的最大光饱和净光合速率、光补偿点和暗呼吸速率分别较红苞变种高20.42%、34.88%、31.95%,而光饱和点却较红苞变种低4.95%;Pn—Ci响应的各参数中,原种的光呼吸速率、CO2饱和最大净光合速率以及羧化效率分别高于红苞变种2.73%、14.79%、21.35%,说明地涌金莲的光合能力要强于红苞地涌金莲;(2)地涌金莲具有典型的C3植物特征;(3)地涌金莲为阳性耐荫植物;(4)地涌金莲的叶绿素a、b以及a/b的含量分别高于红苞地涌金莲22.60%、32.46...
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Published in | 林业科学研究 Vol. 26; no. 2; pp. 234 - 239 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国林业科学研究院资源昆虫研究所,云南昆明,650224
2013
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Subjects | |
Online Access | Get full text |
ISSN | 1001-1498 |
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Summary: | 比较分析了地涌金莲原种及红苞地涌金莲变种的光响应和CO:响应特征以及叶绿素含量等指标。结果表明:(1)在砌—删R中,地涌金莲原种的最大光饱和净光合速率、光补偿点和暗呼吸速率分别较红苞变种高20.42%、34.88%、31.95%,而光饱和点却较红苞变种低4.95%;Pn—Ci响应的各参数中,原种的光呼吸速率、CO2饱和最大净光合速率以及羧化效率分别高于红苞变种2.73%、14.79%、21.35%,说明地涌金莲的光合能力要强于红苞地涌金莲;(2)地涌金莲具有典型的C3植物特征;(3)地涌金莲为阳性耐荫植物;(4)地涌金莲的叶绿素a、b以及a/b的含量分别高于红苞地涌金莲22.60%、32.46%、25.06%。 |
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Bibliography: | 11-1221/S ZHOU Cui-li , LI Zheng-hong , MA Hong , WAN You-ruing, LIU Xiu-xian , HOU Jian-hua ( Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China) Musella lasiocarpa ; Musella lasiocarpa var. rubribracteata ; response curves ; chlorophyll The photosynthetic responses of Musella lasiocarpa and M. lasiocarpa var. rubribracteata to light intensity and CO2 concentration were measured with Licor-6400. The results showed that the maximum light-saturated net photosynthetic rate ( Pmax), light compensation point(LCP) and dark respiratory rate(Rd) of the protospecies were higher than those of the variety by 20. 42%, 34. 88%, and 31.95%. But the light saturation point(LSP) was lower in the protospecies than that of the variety. The Pn-Ci curves revealed that the protospecies had higher photorespira-tory rate (Rp), carboxylation efficiency (CE), and maximum CO2 concentration-saturated net photosynthetic rate (Amax) than those of the variety by 2. 73%, 14. 79%, and 21.35%. Th |
ISSN: | 1001-1498 |