. Introduction to botany. Botany. PLANT BREEDIXG 189 kind or of one row are thus detasseled, it is made probable that pollen, if received at all by the ears of the detasseled stalks, must come from another row or from another kind of corn. The detasseling of alternate rows is a rather common way of insuring cross-pollination. In most cases of hybridizing with bisexual flowers it is necessary to carry out processes similar to the following ones: 1. Select the flower to be pollinated before it opens or before its own pollen is mature. If it is one of a cluster of flowers, as in the wheat and the
. Introduction to botany. Botany. PLANT BREEDIXG 189 kind or of one row are thus detasseled, it is made probable that pollen, if received at all by the ears of the detasseled stalks, must come from another row or from another kind of corn. The detasseling of alternate rows is a rather common way of insuring cross-pollination. In most cases of hybridizing with bisexual flowers it is necessary to carry out processes similar to the following ones: 1. Select the flower to be pollinated before it opens or before its own pollen is mature. If it is one of a cluster of flowers, as in the wheat and the apple, remove from the cluster of the flowers all that are not to be operated upon. 2. Open the re- maining flowers and remove the stamens by taking hold of the fila- ments with fine forceps, or cut away all the sta- mens at once, as shown in figure 162. Keep the flower or the en- tire twig covered with a paper bag until the stigma is mature. 3. When the stigma is mature, pollinate it with the desired kind of pollen. This may be done with the finger tip or with a camel's-hair brush or other implement. It is safer to take pollen from a flower that has been kept covered with a paper bag to keep off foreign pollen. i. Keep the pollinated flower covered with a paper bag until the fruit has grown considerably. 178. Plants grown from hybrid seeds. When seeds pro- duced by hybridization are planted, the seedlings grown from them may vary greatly in their vegetative characters, as size,. 162. A peach flower prepared for hybridization A, flower cut round for removal of the stamens, with the removed parts of the young flower showing above; -B, longitudinal section of a flower showing level (s) at which the cut was made in A. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917;
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