Comparison of leaf anatomical traits between maize, sorghum, and rice
2008
Mabilangan, A.E. | Dionora, M.J.A. | Pablico, P P. | Angeles, R.B. | Sheehy, J.E., International Rice Research Inst., Los Banos, Laguna (Philippines). Crop and Environmental Science Div.
Leaf anatomical traits usually related with photosynthetic capacity were examined in leaves of maize, sorghum, and rice by light microscopy (bright and fluorescence). These species have distinct differences in anatomical traits such as vein density, vein size, bundle sheath cell (BSC) size and number, and chloroplast occupancy in the BSC. The typical number of BSC in veins of maize was 5 to 8 in the small minor vein (SV) and 12 to 18 in the large major vein (LV). Sorghum has 5 to 6 BSC in SV and 18 to 21 BSC in LV, depending on the thickness of the vascular strands and the order of the vein. BSC in rice SV was 8 to 10 and 13 to 17 in LV. These species have well developed BSC, however, a much larger BSC was observed in maize and sorghum. The percentage of organelles present in BSC of rice was 50% less than in maize and sorghum. These species have long been a model for evaluating leaf anatomy, which shows alteration in the expression of specific traits that can be useful for identifying potential relevant genes.
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