スイートピーの花の斑入り形質の発現は着色遺伝子によって劣性上位で抑制される1つの劣性遺伝子に制御される  [in Japanese] Flower Variegation in Sweet Pea (<i>Lathyrus odoratus</i> L.) Is Regulated by a Single Recessive Gene That Is Epistatically and Recessively Suppressed by a Pigmentation Gene  [in Japanese]

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Author(s)

    • 栁下 良美 Yagishita Yoshimi
    • 筑波大学大学院生命環境科学研究科|神奈川県農業技術センター Graduate School of Life and Environmental Science, University of Tsukuba|Kanagawa Agricultural Technology Center
    • 中山 真義 Nakayama Masayoshi
    • 筑波大学大学院生命環境科学研究科|独立行政法人 農業・食品産業技術総合研究機構 花き研究所 Graduate School of Life and Environmental Science, University of Tsukuba|NARO Institute of Floricultural Science

Abstract

日本で施設切り花栽培に用いられる日長反応が中性のスイートピーの冬咲き性品種は,花色などの多様性がヨーロッパで利用されている長日性の夏咲き性品種に比較して小さい.我々は冬咲き性品種の多様性を拡大するために,夏咲き性品種に特有の花弁に斑の入る形質の導入を試みた.最初のステップとして斑入り形質の遺伝様式と着色性や開花習性との連鎖について検討した.斑入り花と全着色花,全白色花との交雑による後代での花弁着色の表現型の分離比から,斑入り形質は劣性の1遺伝子により制御されており,斑入りの表現型は着色性を制御する遺伝子により劣性上位で抑制されていることを明らかにした.また既存の報告と同様に,現在日本で栽培されている冬咲き性も1つの劣性遺伝子により制御されていることを明らかにした.さらに斑入り形質,着色性および開花習性は互いに独立して分離していることを示した.これらのことから,冬咲き性は表現型が発現した世代で固定が完了する一方で,斑入り形質はその自殖後代で全白色花が現れない世代で固定が完了すると考えられる.<br>

In sweet pea cultivars, a day-neutral winter-flowering type, which is cultivated for cut flowers in greenhouses in Japan, shows less phenotypic variety than a long-day summer-flowering type, which is cultivated in Europe. We would like to introduce the variegated-flower phenotype, which is currently found only in the summer-flowering type cultivars, into winter-flowering plants so as to expand the phenotypic diversity of the winter-flowering plant type. As the first step, we examined the inheritance of the variegated-flower phenotype and its possible linkage with pigmentation and flowering-type phenotypes. The segregation ratios of flower pigmentation phenotypes in progenies of crosses between variegated, fully pigmented, and white-flowered plants revealed that the variegated-flower phenotype is regulated by a single recessive gene, and the phenotype is epistatically and recessively suppressed by a pigmentation gene. We confirmed that the winter-flowering type predominant in Japan is regulated by a single recessive gene, as previously reported. Our data also indicate that the genes controlling the variegation, pigmentation, and flowering type segregate independently. These findings suggest that the winter-flowering phenotype can be fixed in the generation in which the phenotype appears, whereas the variegated-flower phenotype can be fixed at the generation in which the white-flowered phenotype does not appear in the self-progeny.<br>

Journal

  • Horticultural Research (Japan)

    Horticultural Research (Japan) 12(2), 125-130, 2013

    THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

Codes

  • NII Article ID (NAID)
    130004476137
  • NII NACSIS-CAT ID (NCID)
    AA11608561
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1347-2658
  • NDL Article ID
    024709695
  • NDL Call No.
    Z74-C757
  • Data Source
    NDL  IR  J-STAGE 
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