New apple cultivar ‘Kinshu’

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  • ABE Kazuyuki
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization Department of Intellectual Property, NARO
  • MORIYA Shigeki
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization
  • IWANAMI Hiroshi
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization
  • KOTODA Nobuhiro
    Institute of Fruit Tree and Tea Science, NARO Saga University
  • SOEJIMA Junichi
    Institute of Fruit Tree and Tea Science, NARO
  • OKADA Kazuma
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization
  • TAKAHASHI Sae
    Institute of Fruit Tree and Tea Science, NARO
  • KATO Hidenori
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization Administrative Headquarters, NARO
  • KOMORI Sadao
    National Institute of Fruit Tree Science, Ministry of Agriculture, Forest and Fisheries Iwate University
  • HAJI Takashi
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization Administrative Headquarters, NARO
  • BESSHO Hideo
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization The Agricultural Society of Japan
  • ITO Yuji
    National Institute of Fruit Tree Science, Ministry of Agriculture, Forest and Fisheries
  • ISHIGURO Makoto
    Institute of Fruit Tree and Tea Science, NARO Shonai General Brunch Office, Yamagata Prefecture
  • SHIMIZU Taku
    Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization

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Other Title
  • リンゴ新品種‘錦秋’
  • リンゴ シン ヒンシュ'キン アキ'

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Abstract

<p>‘Kinshu’ is a mid-season maturing red dessert apple (Malus pumila Mill.), resulted from a cross of ‘Sensyu’ and 4-4349 (‘Tsugaru’ × ‘Iwakami’) made in 1994. The original tree of ‘Kinshu’ was initially selected in 2006 in Apple Research Station (current: Morioka Research Station), NARO in Morioka, and was tested as selection Ringo Morioka-70 under the sixth apple selection national trial initiated in 2009. It was released as ‘Kinshu’ in 2018, then registered as No. 27428 under The Plant Variety and Seedling Act of Japan in 2019. The tree vigor is medium, and its flowering time is 2 days later than ‘Tsugaru’. ‘Kinshu’ is cross-compatible with major commercial cultivars such as ‘Fuji’, but is cross-incompatible with ‘Tsugaru’, since the S-genotype of ‘Kinshu’ is S3S7. ‘Kinshu’ is resistant to Alternaria blotch and is susceptible to scab. The fruit of ‘Kinshu’ ripens in late September to early October in Morioka. Mean fruit weight is 298 g, almost same as ‘Tsugaru’ in the national trial. The fruit has a dark red surface color at harvest time, and the flesh firmness is 13.8 lbs, no significant difference with that of ‘Tsugaru’. Soluble solids concentration averages around 14.7%, significantly higher than that of ‘Tsugaru’. Titratable acidity averages 0.34 g/100 ml, significantly higher than that of ‘Tsugaru’ and lower than that of ‘Fuji’. Fruit skin shows good coloration compared with ‘Tsugaru’. Coloration did not decline even in the relative temperate apple-growing regions of Japan. Therefore, ‘Kinshu’ is expected to be a suitable mid-season maturing cultivar with high-quality fruit for adapting to warmer climate.</p>

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