. Botany for agricultural students . Botany. Fig. 238. â A portion of a cross section through a node of Sugar Cane, showing rods of wax secreted by the epidermis. Enlarged many times. After De Fio. 239. â A portion of a sec- tion through a Mullein leaf, show- ing the epidermis with its branched hairs. After Andrews. case in soils that are cold or frozen, then even a small amount of transpiration may be injurious. Protection against Injuries Resulting from Transpiration. â Plants may be protected against the injurious â effects of trans- piration by having their transpiring surface modif
. Botany for agricultural students . Botany. Fig. 238. â A portion of a cross section through a node of Sugar Cane, showing rods of wax secreted by the epidermis. Enlarged many times. After De Fio. 239. â A portion of a sec- tion through a Mullein leaf, show- ing the epidermis with its branched hairs. After Andrews. case in soils that are cold or frozen, then even a small amount of transpiration may be injurious. Protection against Injuries Resulting from Transpiration. â Plants may be protected against the injurious â effects of trans- piration by having their transpiring surface modified, or by having the soil moisture increased or conserved. There are various ways in which plants modify their transpiring surface. Some plants, such as the Carnation, Pine, and many plants of the desert, have the epidermis of their leaves covered with a heavy layer of cutin. Sometimes, as in Cabbage, Sugar Cane, and Wheat, the epidermis is covered with a waxy bloom. (Fig. 238.) Many plants are protected by a covering of hairs. {Fig. 239.) Some plants, such as the Cacti of the desert, have reduced their leaves to mere spines which offer only little trans-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Martin, John N. (John Nathan), b. 1875. New York : John Wiley & Sons, Inc.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
