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ISHS Acta Horticulturae 567: IV International Strawberry Symposium

PHOTOSYNTHETIC CHARACTERISTICS AND GEOGRAPHICAL DISTRIBUTION OF DIPLOID FRAGARIA SPECIES NATIVE IN JAPAN

Author:   Y. Oda
Keywords:   Fragaria iinumae, F. nipponica, F. nipponica var. yakusimensis, F. yezoensis
Abstract:
There are three wild diploid Fragaria species (Fragaria iinumae, F. nipponica, F. yezoensis) and one botanical variety (F. nipponica var. yakusimensis) in Japan F. iinumae Makino is distributed from the lowlands of Hokkaido in the north to the mountains of main island Honshu (300 ~ 2,000 m elevation), in areas of heavy snowfalls along the Sea of Japan. The southernmost limit is Mount Daisen in Tottori Prefecture. F. nipponica Makino is distributed in the mountainous regions with elevation of 500 ~ 2,000 m on the Pacific side in central part of Honshu. F. nipponica var. yakusimensis Masamune is found in isolated areas at an elevation of 1,800 m on Yakushima, a small island, located south of Kyushu. While F. yezoensis Hara grows in the eastern shores of Hokkaido. Although native Fragaria of Japan are found growing in diverse environments and habitats, their general photosynthetic characteristics have not been described in detail. The present work was undertaken to determine their maximum rates, optimum temperature range, light saturation and compensation points for photosynthesis, and dark respiration rates. There were no marked interspecific differences in their photosynthetic characteristics.
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