New Japanese Pear Cultivar ‘Narumi’

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  • ニホンナシ新品種‘なるみ’
  • ニホンナシ シン ヒンシュ'ナル ミ'

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Abstract

<p>‘Narumi’ is a new self-compatible cultivar of Japanese pear (Pyrus pyrifolia Nakai) released in 2015 by the NARO Institute of Fruit Tree Science (NIFTS), National Agriculture and Food Research Organization. The cultivar originated from a cross between 269-21 (‘Hosui’ × ‘Osa-nijisseiki’) and 162-29 (‘Niitaka’ × ‘Hosui’) in 1996, was selected as a promising tree in 2006, and was included in the 8th national trial as ‘Nashi Tsukuba 57’ from 2007, which was conducted at 37 experimental stations in 36 ‘Narumi’ trees showed medium vigor in the national trial. They produced moderate number of shoots, moderately large number of fruit spurs, and moderate number of axillary flower buds. The flowering time of ‘Narumi’ was April 14, the same time as ‘Hosui’. The harvest time was September 10, the same time as ‘Hosui’ in the national trial. It was resistant to black spot, but susceptible to scab. ‘Narumi’ shows self-compatibility and its fruit set by open pollination was high, suggesting it is expected to reduce the labor required for artificial pollination. The S-genotype of ‘Narumi’ is S4 sm S5. Pollen of ‘Narumi’ is incompatible with 4.9,higher than that of ‘Hosui’. The occurrence of both core rot and water core was minor, which is comparable to that of ‘Hosui’ and less than that of ‘Hosui’, respectively. ‘Narumi’ is expected to be cultivated as self-compatible, which is expected to reduce the labor required for artificial pollination. Summary prefectures throughout Japan. The cultivar was ultimately selected and released as ‘Narumi’ in 2015 and was registered as No. 25276 under the Plant Variety Protection and Seed Act of Japan on July 6, 2016. S4S5 and S1S5 S-genotype cultivars. Fruit shape of ‘Narumi’ is round. Fruit weight averaged 532 g in the national trial, larger than that of ‘Hosui’. Flesh firmness of ‘Narumi’ was 4.7 lbs, and the soluble solids content averaged 12.9%, both the same as that of ‘Hosui’. The juice pH averaged</p>

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