ニホンナシ"二十世紀"の側枝年令と果実発育との関係

概要

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Relationships between fruit growth on lateral branches of different ages and reserve substances in Japanese pear cv. Nijisseiki were investigated.1. The fruits on four-year-old lateral branches and five-year-old lateral branches were bigger than on the other lateral branches. On six-year-old lateral branches and seven-year-old lateral branches, fruit weight was related to the number of cluster leaves.2. When upper and basal parts of two-year-old to five-year-old portions of lateral branches were girdled, clusters and fruit growth on the four-year-old portion and five-year-old portion were greater than on the other portions. Total sugar and total amino acid contents in these clusters on four-year-old portions and five-year-old portions were higher than on the other portions.3. The later the girdling time in the period from sprouting stage to full bloom, the higher the total sugar and total amino acid contents in clusters.4. From these results, it was concluded that relationships between the age of lateral branches and fruit growth in Japanese pear are related to the mobilization of reserve substances.
園藝學會の論文