Effects of Reduced Irradiance on Growth and Flowerlng of Amaryllis (Hippeastrum x hybridum) - Collections | Kyushu University Library

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＜departmental bulletin paper＞
Effects of Reduced Irradiance on Growth and Flowerlng of Amaryllis (Hippeastrum x hybridum)

Creator	Author PID L003645 Creator Name 松田, 鹿徳 Matsuda, Shikanori Affiliation Affiliation Name 九州大学大学院農学研究院植物資源科学部門農業植物科学講座園芸学研究室 Laboratory of Horticultural Science, Division of Agricultural Botany, Department of Plant Resources, Faculty of Agriculture, Kyushu University
Creator	Author PID K001570 Creator Name 大久保, 敬 Okubo, Hiroshi Affiliation Affiliation Name 九州大学大学院農学研究院植物資源科学部門農業植物科学講座園芸学研究室 Laboratory of Horticultural Science, Division of Agricultural Botany, Department of Plant Resources, Faculty of Agriculture, Kyushu University
Language	Japanese
Publisher	九州大学大学院農学研究院
Publisher	Faculty of Agriculture, Kyushu University
Date	2000-11
Source Title	Science bulletin of the Faculty of Agriculture, Kyushu University
Vol	55
Issue	1
First Page	1
Last Page	4
Publication Type	Version of Record
Access Rights	open access
JaLC DOI	https://doi.org/10.15017/21062

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PISSN	1347-0159
NCID	AA11577672
Record ID	21062
Peer-Reviewed	Unrefereed
Subject Terms	アマリリス
	遮光
	開花
	鱗茎
	鱗茎球根植物
Notes	Effects of reduced irradiance on growth and flowering of amaryllis (Hippeastrum x hybridurn cv. Apple Blossom) were examined. Low irradiance delayed flowering and reduced flowering rate, whereas the leaves were long. Measurement of fresh and dry weight of the flowers and scape, leaves, bulb and roots and their distribution to each organ suggested that the dry matter accumulation in the bulb is suppressed by low irradiance, subsequently it causes the abortion of flower buds or inhibition of flower bud development inside the bulb.
Notes	遮光処理がアマリリスの生育開花におよぼす影響を調べた. 強い遮光処理は開花率を減少させ, 開花日を遅らせた. 開花率及び開花時の花茎長は無遮光処理よりも27.5%遮光処理のほうが優れた. 逆に葉の長さは遮光程度が進むにつれて長くなった. 程度を変えた遮光処理による花・花茎, 鱗茎および根の生体重および乾物重, ならびに生体重及び乾物重の各器官への配分率の変化から, 光の量が少なくなると植物体は小さくなるが, 葉の生長は促進され, 逆に鱗茎が小さくなることが明らかになった. すなわち, 遮光により, 鱗茎への貯蔵養分の供給が減少し, それによって鱗茎の栄養分を消費しながら鱗茎内で進むと考えられる花芽の発達が抑制され, その結果, 開花が遅れ, 開花率も減少することが示唆された.
Created Date	2012.07.26
Modified Date	2022.11.11