Identification of Pyrus Species by Leaf Peroxidase Isozyme Phenotypes.

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  • 葉のペルオキシダーゼアイソザイム分析によるナシ属種の類別
  • ハ ノ ペルオキシダーゼ アイソザイム ブンセキ ニ ヨル ナシゾクシュ ノ

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Polyacrylamide gel electrophoretic separations of peroxidase isozymes from leaves of Asian Pyrus species showed patterns that are reproducible for species and cultivars; that are independent of sampling time and the development stage of the leaf.<BR>The 187 Pyrus representations were reproducibly classified into five groups by 130 peroxidase isozyme phenotypes composed of 32 bands.<BR>Bud sports could be distinguished from the original cultivars, i. e., 'Osa-nijisseiki', 'Wasenijisseiki' 'Akakei-nijisseiki' from 'Nijisseki', 'Aokei-niitaka' from 'Niitaka', and 'Kiyosumi' from 'Shinsui'.<BR>Comparison of peroxidase isozyme phenotypes showed that the hybrids cultivars inherited some bands from their parents.<BR>Close genetic relationships among the cultivars existed within the group consisting of old cultivars from the region and hybrids of 'Nijisseiki'.<BR>The old cultivars of the region were divided into two groups. However, a few geographic variations in isozyme phenotypes within each groups observed among the cultivars.

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