. Cyclopedia of hardy fruits. Fruit; Fruit-culture. INTERNAL STRUCTURE FIBROVASCULAR BUNDLES Cutting pomes to show the internal structure. When varieties cannot be distinguished from external marks, there are several very reliable characters that can be made use of m the in- ternal anatomy of the pome. To study these characters it is necessary to make a longi- tudmal and a transverse section of the fruit. To make an accurate examination of the in- ternal structure of apple, pear or quince, the sectioning must be done with a keen, thin knife, with a steady hand and a good eye. In making the lon
. Cyclopedia of hardy fruits. Fruit; Fruit-culture. INTERNAL STRUCTURE FIBROVASCULAR BUNDLES Cutting pomes to show the internal structure. When varieties cannot be distinguished from external marks, there are several very reliable characters that can be made use of m the in- ternal anatomy of the pome. To study these characters it is necessary to make a longi- tudmal and a transverse section of the fruit. To make an accurate examination of the in- ternal structure of apple, pear or quince, the sectioning must be done with a keen, thin knife, with a steady hand and a good eye. In making the longitudinal section, the knife should pass through the center of the calyx, showing the remnants of styles and stamens; through the middle of the core cell, showing the outline of the core cavity; and through the middle of the stem. A true record cannot be obtained unless the organs named are di- vided with fair accuracy into halves. In mak- ing the transverse section, the knife should pass through the widest diameter of the fruit, cutting the core in half. If the core is not in the center of the fruit, trial cuts to locate it must be made that it may be halved 2. Longitudinal section of an apple showing core characters (X %). a. Cavity; b, core- lines; c, abaxile open core with broadly ellip- tical mucronate carpels; d, conical calyx- tube; e, calyx-lobes; /, basin. The stamens. After halving the fruit longitudinally, the first organs to be studied are the stamens, the position of which furnishes reliable taxonomic data. Hogg, an eminent British pomologist, an analytical key to varieties of apples based on the position of the stamens. Apples may be divided into three groups in accordance with the position of stamens. In one group the stamens are on the outer margin of the calyx-tube and are said to be marginal; in the second, they are located about the middle of the tube and are said to be median; in the third, they are inserted at the base of the tube and are
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfruitculture, bookyea
