Section of Ecology and Systematics, Cornell University, Ithaca, New York 14853.
Plant Physiol. 1979 Mar;63(3):542-7. doi: 10.1104/pp.63.3.542.
Apparent photosynthesis and dark respiration were followed during development in four light environments of leaves of Fragaria virginiana Duchesne. Leaf expansion was completed more rapidly the higher the growth photon flux density and leaves senesced more quickly in high light. Maximum photosynthetic capacity coincided with the completion of blade expansion and declined quickly thereafter. Leaves were transferred from high to low and low to high photon flux densities at several stages during expansion. Leaf photosynthetic performance and anatomy were subsequently analyzed. Leaf anatomy and apparent photosynthesis per unit dry weight can be modified during expansion to reflect the predominant light conditions. Adaptive potential is greatest early in blade expansion and decreases as expansion is completed.
在四种光照环境下，对弗吉尼亚草莓（ Fragaria virginiana Duchesne）叶片的发育过程中的明显光合作用和暗呼吸进行了跟踪研究。叶片扩展完成得越快，生长光子通量密度越高，叶片在高光下衰老得越快。最大光合能力与叶片扩展完成时吻合，随后迅速下降。在扩展过程中的几个阶段，叶片从高光到低光和从低光到高光的光通量密度都有转移。随后分析了叶片的光合性能和解剖结构。在扩展过程中，叶片解剖结构和单位干重的表观光合作用可以进行调整，以反映主要的光照条件。适应潜力在叶片扩展早期最大，随着扩展的完成而降低。
