Survey of Growth and Cut Flower Quality of Eustoma grandiflorum for Selection of Kagoshima University the F₁ Original Variety ‘Oh-iyo’

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  • トルコギキョウ（Eustoma grandiflorum（Raf.）Shinn.）の鹿児島大学オリジナルF1品種群‘奥玉洋’（オーイヨウ）選定のための生育および切り花品質調査
  • トルコギキョウ(Eustoma grandiflorum (Raf.) Shinn.)ノ カゴシマ ダイガク オリジナル F ₁ ヒンシュグン'オウギョクヨウ'(オーイヨウ)センテイ ノ タメ ノ セイイク オヨビ キリバナ ヒンシツ チョウサ

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Abstract

Since 2018, we have been conducting a survey to select promising F₁ variety from those cultivated by Ornamental Horticulture and Floriculture Laboratory with the goal of producing Kagoshima Universityʼs original brand Eustoma variety. In this survey, we investigated the initial growth and growth characteristics as well as cut flower quality of 30 strains newly created in 2020. As a result, there were 24 strains in which flower color and flower shape traits were considered to be stabilized, and all of them satisfied the requirement of a standard cut flower length of over 90 cm. Furthermore, the strains with variations in growth and occurrence of severe physiological disorders were excluded from the selection, and 11 strains were selected as candidates for the original F1 variety. The Kagoshima University original variety of those Eustoma grandif lorum cut flowers is named as ʻOh-iyoʼ, and trademark registration is now awaiting. In this report, we posted a list of flower color traits, flower diameter and early-lateness criteria, and cultivation characteristics for all 21 strains of ʻOh-iyoʼ selected by 2021, along with their respective photographs.

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