冨吉 啓太

領 域 名  園芸科学

教員氏名   冨𠮷 啓太

研究分野 施設園芸学 

研究キーワード:施設園芸食用ハス(レンコン),

            栽培環境制御,持続可能な栽培技術

1.食用ハス(レンコン)の生態的特性の解明

 食用ハス根茎の伸長・肥大は日長により制御されており,長日条件下で伸長,短日条件下で肥大することが明らかとなっている.しかし,トンネル栽培やハウス栽培などにより長日期(6〜7月)でも根茎が肥大する品種が存在することから,日長以外にも根茎の伸長・肥大を制御する要因があると考えられる.本研究室では,さまざまな生育環境が食用ハス根茎の伸長・肥大に及ぼす影響を調査し,食用ハスの生態的特性の解明に取り組む.

2.食用ハス(レンコン)の施設栽培体系の構築

 食用ハスは,栽培に広い面積が必要であるため,栽培環境の制御が困難である.小型の栽培槽による食用ハスの生産が可能になれば,温室を利用した栽培環境の制御が容易となり,生産性の向上が期待できる.そこで本研究室では,小型栽培槽向け品種の探索・育成や栽培環境の検討をおこない,食用ハスの施設栽培体系の構築に取り組む.

3.温暖化に適応する野菜品種の探索・育成および安定生産技術の開発

 近年,地球温暖化による高温の影響で,葉菜類や果菜類などの品質・収量の低下が問題となっている.そこで高温環境下でも栽培可能な品種の探索・育成や栽培環境制御による安定生産技術の開発に取り組む.

代表的な研究業績

Tomiyoshi, K. et al. (2017) The photoperiodic response of lotus rhizome morphogenesis is determined quantitatively. Acta Horticulture. 1171: 83-88.

Tomiyoshi, K. et al. (2022) Characteristics and genetic control of rhizome coloration in red rhizome lotus. Hort. J. 91: 366-374.

尾崎行生ら.(2023) ハスの研究紹介4. 根茎の肥大制御と着色, 生物の科学 遺伝, 222-227.エヌ・ティー・エス, 東京.

Research Area: Horticultural Science 
Research Specialization: Protected Horticultural Science 
Name: TOMIYOSHI, Keita

Keywords:protected horticulture, Nelumbo nucifera,

        control of growth environment, sustainable cultivation technology

Recent Research

1. Ecological characteristics of edible lotus.  

 Elongation and enlargement of rhizome in edible lotus are controlled by photoperiod, that is to say, rhizome elongates and enlarges under long and short days, respectively. However, early maturing cultivars grown in plastic tunnels and greenhouses exhibit rhizome enlargement even in long-day conditions. This suggests the presence of other factors controlling rhizome elongation/enlargement in edible lotus. We study the effects of various growth environments on the elongation and enlargement of edible lotus rhizomes and clarify the ecological characteristics of edible lotus.

2. Establishment of the edible lotus protected cultivation system.

In general, cultivation of edible lotus requires a large growth area, which makes difficult to control the growth environment. If it becomes possible to cultivate edible lotus in a small container, productivity can be expected to increase by controlling of growth environment in greenhouses. Therefore, we aim to explore and breed cultivars that are suitable for cultivation in a small growth area and establish stable production techniques by controlling of growth environment.

3. Exploration and breeding of vegetable cultivars and development of stable 

  production techniques for the global warming.

 In recent years, increased temperatures caused by global warming have adversely affected the quality and yield of leafy and fruit vegetables. To solve these issues, we study to explore and breed cultivars that can be grown under high temperature conditions and develop stable production techniques by controlling of growth environment.

Publications

Tomiyoshi, K. et al. (2017) The photoperiodic response of lotus rhizome morphogenesis is determined quantitatively. Acta Horticulture. 1171: 83-88.

Tomiyoshi, K. et al. (2022) Characteristics and genetic control of rhizome coloration in red rhizome lotus. Hort. J. 91: 366-374.

Ozaki et al. (2023) Hasunokenkyushokai 4-Konkeinohidaiseigyotochakushoku. Seibutsu no Kagaku Iden (In Japanese). 222-227. NTS, Tokyo.

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