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苗床の条件とトマト, 胡瓜苗の光合成作用について   :   Studies on the Influences of Conditions of Nursery Bed on the Photosynthesis of Tomato and Cucumber Seedlings. 

作成者 渡辺, 斉
作成者の別表記 WATANABE, H.
日本十進分類法 (NDC) 626
内容 1.本実験は育苗環境と苗の良否との関連を光合成作用の面より解明せんとして行われたもので, 光度および株間とトマト, 胡瓜苗の葉内の炭水化物量を分析した.2.日射量とトマト, 胡瓜苗の光合成量との関係を調べるため, 違った播種期に育苗して, 違った階級の日射量を得, 両者の関係を葉中の全炭水物量によって比較した.3.トマト, 胡瓜苗の葉における全炭水化物の生成は, 日射量の増大と共に増加し, トマト苗では, 176.7〜199.5cal./cm^2/6 hrs., 胡瓜苗では252.0cal./cm^2/6 hrs.のとき最大値を示し, さらに日射量が増大すると, 炭水化物量は減少した.4.粗植および密植状態で育苗された苗の各葉の光合成量を調べるため, トマトでは株間を4.5寸×4.5寸, および2.5寸×2.5寸に移植し, 播種後42, 48, 54日目に調査した.胡瓜では, 第1回に3寸×3寸, 第2回5寸×5寸および第1回1.5寸×1.5寸, 第2回3寸×3寸にして, 播種後35, 42, 50日目に調査した.5.密植状態で育苗されたトマト苗では下葉の炭水化物量が, 密植状態が大きくなるにつれて減少し, 上位の大形の葉では, 一時炭水化物量が増加するが, その後これも次第に下位葉となって減少する.粗植状態の苗では密植状態となるまで炭水化物量は多いが, 大形または上位葉ほどその値が大きい.6.胡瓜苗では両区とも下葉の炭水化物量が最も多く, 密植の状態が続いてもある程度までこの傾向が続き, トマトのように上位葉附近のみ最大の値を示すということはない.しかし密植区では全体として炭水化物の含有率も含有量も, 粗植区のそれに比較すれば少い.
Experiment was designed to study the photosynthesis of tomato and cucumber seedling by analysis of carbohydrates in leaves. The results were summarized as follows. 1) The carbohydrate content in tomato and cucumber leaves was evidently influenced by the light intensity. The maximum photosynthetic production, estimated by the difference between carbohydrates at morning and afternoon in tomato leaves, was found in 176.7〜199.5 cal. /cm^2/6 hrs. light intensity. 2) Tomatoes were grown in nursery-bed by wide (13.6cm^2) and close (9.6cm^2) spaces and carbohydrates in the leaves were analysed at 42, 48 and 54 days after sowing. Cucumbers were also widely (15cm^2) and closely (9cm^2) spaced and the leaves were analysed at 35, 43 and 50 days after sowing. 3) In the leaves of tomato, the carbobydrates were low in the old or small leaves and high in young or large leaves. In widely spaced plot, the carbohydrates content and absolute amount of carbohydrates in leaves was high compared to closely spaced plots. But when the growth of seedlings becoming reduced by the interference of each leaves, the content of carbohydrates becoming gradually decreased. 4) In cucumber seedling, the old or lower leaves had higher value of carbohydrates than young or upper leaves. But the content and the absolute amount of carbohydrates in each leaves were higher in the widely spaced than in the closely spaced one.

公開者 千葉大学園芸学部
コンテンツの種類 紀要論文 Departmental Bulletin Paper
DCMI資源タイプ text
ファイル形式 application/pdf
ハンドルURL http://mitizane.ll.chiba-u.jp/meta-bin/mt-pdetail.cgi?cd=00025812
ISSN 0069-3227
NCID AN00142658
掲載誌情報 千葉大学園芸学部学術報告 Vol.5 page.74-83 (19571230)
フルテキストへのリンク http://mitizane.ll.chiba-u.jp/metadb/up/AN00142658/KJ00004280161.pdf
情報源 The technical bulletin of Faculty of Horticulture, Chiba University
言語 日本語
著者版フラグ publisher


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