レンゲの交配技術
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概要
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1. In order to clarify the crossing technique of Genge (Astragalus stjnicus L. ), some experiments have been carried out on the fertilization and the castration method. 2. Genge is a self or cross fertilizing plant in the field, but the fertilization is almost impossible when the plant being isolated from insects ih the wire cage, notwithstanding the stigma being covered with the self pollen grains at the flowering time. 3. The stigma consists of the papillae and the hairs of two kinds surrounding it. As it is supposed that the inner hairs whicn cover the papillae hinder the contact between pollen grains and the papillae, resulting the fertilization in failure, artificial pollination must be handled so as to stick the pollen grains to the papillae dir-ectly. 4. Genge is a proterandry plant and the anther dehisces before the opening of flower in a floret. The duration of high fertilizing ability of the pollen was in the course from the time of anther dehiscence - the previous day of fiower opening -to 3 days after flowering, but that of the stigma was from the opening time to 4 days after then. 5. Three castration methods, viz. stamenspicking before the anther dehiscence, killing of the self pollinated pollen grains by 50% alcohol, and excision of the self pollinated stigma with the petals (keels) and stamens after dehiscence or flowering were compared. As the results, the stamens-picking method shows the highest percentage in fertilization and in such a case that the castration and the pollination must be performed simultaneously it can be accomplished by the use of 50% alcohol method.
- 日本育種学会の論文
- 1953-06-30