Inter-strain Variation in Morphological Features of ʻKaida kabuʼ, a Local Turnip Variety of Nagano Prefecture, Japan

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  • 長野県在来カブ品種‘開田蕪’における形態的特徴の系統間変異

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Abstract

We selected 22 lines of ‘Kaida kabu’, a local turnip variety of Nagano Prefecture, from seed saving seeds and cultivated them throughout the ‘Kaida kougen’ and examined the morphological characteristics of up to 10 individuals of each strain. The results indicated that ‘Kaida kabu’ has a wide range of interstrain variation and retains a high level of genetic diversity. This may be due to the large number of seed saving farmers and genetic exchange among them. In the past, different strains of local turnips were known to exist in the Nishino and Suekawa districts, which divide the Kaida kougen, but now they are collectively known as ‘Kaida kabu’ and there is no difference between them. However, the results of a principal component analysis using morphological data of the roots showed that there were differences close to those recognized by farmers. It is also suggested that the ‘Pink kabu’, which is clearly separated within the same area, may have been produced by selecting individuals mutationally defective in pigment synthesis from the ‘Kaida kabu’. To maintain the morphological and genetic diversity of ‘Kaida kabu’, it would be effective not only to maintain the number of plants and farmers, but also to recognize and maintain the rarity of the species in the region.

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  • 信州大学農学部AFC報告

    信州大学農学部AFC報告 22 37-44, 2024-03-31

    信州大学農学部附属アルプス圏フィールド科学教育研究センター

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