四国山地西部に遺存するダイズ地方品種の生育・収量に関係する諸形質および種子形態の変異  [in Japanese] Quantitative Variation in Growth and Yield-Related Traits and Seed Morphology in Local Varieties of Soybean in the Western Part of the Shikoku Mountains  [in Japanese]

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Abstract

四国山地西部の山村農家から黄色種子25系統,黒色種子17系統,褐色種子2系統および緑色種子10系統からなる計54のダイズ地方品種系統を採集し,圃場で育成して生育・収量構成要因と種子形態の変異を調べた.枝分かれ分散分析の結果,これらの形質の多くに系統間で有意な差違が認められた.また開花まで日数および成熟までの諸形質と100粒重以外の収量構成要因相互間に有意な正の相関があった.100粒重と他の生育・収量構成要因との間には負の相関があり,生育と子実の充実の間にトレードオフがあることを示唆した.また,種子形状比(厚み/幅)と栽培高度との間に有意な正の相関が認められ,栽培高度が形質多様性創出の一因と成り得ることが示唆された.調べた生育・収量構成要因と種子形態について主成分分析を行い,形質の類似性と地理的分布との関係を調べたが,愛媛県広田村(旧名)の系統を除いて,明らかな関係は認められなかった.系統間の遺伝的距離と地理的距離の間には正の相関が見られる一方で,遺伝的距離の近い系統間にも大きな形質の差違が認められた.

Fifty-four accessions of local soybean strains were collected from villages in the western part of the Shikoku Mountains and examined for morphological traits associated with growth, yield, seed size and seed shape. They included 25 yellow, 17 black, 2 brown and 10 green seed-coat color strains. Nested analysis of variance revealed large morphological variation among strains within the seed-coat color groups but hardly any significant difference among the color groups except seed weight. Significant positive correlations were found among growth and reproduction related characters except seed weight. Seed weight was negatively correlated with those characters, indicating a trade-off corresponding to the resource allocation to growth and maturation of seeds. There was a significant negative correlation between altitude of collection sites and seed shape (height/thickness), suggesting that altitude can be a factor causing diversification of seed morphology. Principal component analysis (PCA) was carried out on eleven morphological traits. No clustering in regional populations was shown on the plane determined by the first two principal components except in Hirota Village (old name), in Ehime Prefecture. There was a positive correlation between genotypic distance revealed by random amplified polymorphic DNA (RAPD) analysis and phenotypic distance. However, a large phenotypic variation was observed even between genetically very closely related strains.

Journal

  • Japanese Journal of Crop Science

    Japanese Journal of Crop Science 76(1), 86-92, 2007-01-05

    The Crop Science Society of Japan

References:  12

Cited by:  1

Codes

  • NII Article ID (NAID)
    110006153520
  • NII NACSIS-CAT ID (NCID)
    AN00189888
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    00111848
  • NDL Article ID
    8647658
  • NDL Source Classification
    ZR7(科学技術--農林水産--農産)
  • NDL Call No.
    Z18-342
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE  JASI 
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