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バレイショ生長の年次変異と気象条件との関係 : 第2報 塊茎澱粉重における年次変異の発現過程

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Title: バレイショ生長の年次変異と気象条件との関係 : 第2報 塊茎澱粉重における年次変異の発現過程
Other Titles: Annual Variation of Growth and its Relation to Meteorological Factors in Potato Plants : II. An aspect of annual variation in tuber starch weight
Authors: 西部, 幸男1 Browse this author
岩間, 和人2 Browse this author
中世古, 公男3 Browse this author
Authors(alt): Nishibe, Sachio1
Iwama, Kazuto2
Nakaseko, Kimio3
Keywords: 気温
茎葉重
降水量
澱粉収量
澱粉重の増加速度
日射量
年次変異
バレイショ
annual variation
patato plants
precipitation
shoot fresh weight
solar radiation
starch yield
temperature
tuber growth rate
Issue Date: 5-Sep-1988
Publisher: 日本作物学会
Journal Title: 日本作物學會紀事
Volume: 57
Issue: 3
Start Page: 505
End Page: 511
Abstract: バレイショの塊茎生長における年次変異と気象条件との関係を明らかにするために, 北海道農業試験場で行った生育追跡試験のデータを用いて, 主要栽培3品種(早生;男爵薯, 晩生;農林1号および紅丸)における塊茎澱粉重(澱粉重)の年次変異の発現過程, ならびにこれと茎葉生体重(茎葉重)および気象条件との関係を検討した. 1. 澱粉収量は澱粉重の増加期間とは有意な相関関係を示さず, この期間中の澱粉重の増加速度と高い正の相関関係を示したことから, 澱粉収量の年次変異は主として澱粉重の増加速度の年次変異に起因したものと推察した. 2. 肥大盛期における澱粉重の増加速度は, 男爵薯では主として茎葉重の, 農林1号と紅丸では主として茎葉効率(澱粉重の増加速度/茎葉重)の年次変異に影響された. 3. 肥大初期における気象条件は, 光合成産物の茎葉と塊茎への分配の割合に大きく影響した. 多照, 少雨および最高気温が22〜23℃の年次では, 塊茎への分配の割合が高く, このため肥大盛期の茎葉重と密接に関係する肥大初期の茎葉の生長が抑制された. 4. 肥大盛期における気象条件は, 茎葉効率に影響を及ぼした. 多照, 少雨および最低気温が15℃前後の年次では, 茎葉効率が高い傾向を示した.
The tuber starch weight in three varieties of potato plant was observed 5-8 times during the growing season (June to September) for ten years (1972-1981) at the Hokkaido National Agricultural Experiment Station. 1. The starch yield in each variety showed a significant correlation with the growth rate of the tuber starch weight (tuber GR), and not with the bulking period (Table 1). 2. At the early bulking stage, high solar radiation, little precipitation and a maximum temperature between 22-23℃ enhanced the tuber growth, but restricted the shoot growth, resulting in a low shoot fresh weight at the main bulking stage, especially in the early variety (Figs. 1 and 2). The meteorological factors accounted for 68% of the variance in the distribution ratio for the tuber on a fresh weight basis. 3. At the main bulking stage, the tuber GR showed a significant correlation with the shoot fresh weight in the early variety, but with the shoot efficiency (tuber GR/shoot fresh weight) in the late varieties. The shoot efficiency was higher under the conditions of high solar radiation, little precipitation and a minimum temperature of about 15℃ (Table 2, Fig. 3). The meteorological factors accounted for 54% of the variance in the shoot efficiency (Fig. 4). 4. At the late bulking stage, the tuber GR showed a significant correlation with the shoot fresh weight in the late varieties.
Type: article
URI: http://hdl.handle.net/2115/47011
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 岩間 和人

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