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バレイショ生長の年次変異と気象条件の関係 : 第1報 茎葉生重における年次変異の発現過程と日射量, 気温および降水量との関係

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Title: バレイショ生長の年次変異と気象条件の関係 : 第1報 茎葉生重における年次変異の発現過程と日射量, 気温および降水量との関係
Other Titles: Annual variation of the growth and its relation with meteorological factors in potato plants : I. The aspect of annual variation in shoot frech weight during the growth and its relations with solar radiation, temperature and precipitation
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
Issue Date: 1987
Journal Title: 日本作物学会紀事
Volume: 56(3)
Start Page: 293
End Page: 301
Abstract: Considering annual variation of the potato shoot growth and its relation with the meteorological factors, fresh weight of shoot (shoot weight) in three main cultivars was weighed at four to six times during the growing season (June to September) through ten years (1972-1981) at the Hokkaido National Agricultural Experiment Station. 1. Annual variation of shoot weight in each variety increased after sproutin to late July, then decreased slightly on Augustm when the early variety (Danshakuimo) reached the harvesting stage. Thereafter, in two late varieties (Norin No. 1 and Benimaru), it turned to increase again and showed the maximum value on late September (Fig. 1). Comparing it among the varieties, Danshakuimo showed the larger value than the other two varieties since middle July (Fig. 1). Shoot weight, However, showed significant positive relations among the varieites at most of the sampling date. It indicated that when shoot weight was larger in one variety, it tended to be larger in the other two varieties (Table 2.). 2. Annual variation of the date of sprouting influenced little on shoot weight of July 1 (just before the first flowering stage), which depended mostly on the growth rate of shoot weight (shoot GR) from sprouting to July 1 (Table 1, 3). Shoot GR from July 1 to 15 showed large effect on shoot weight from middle July to late August. Annual variation of shoot weight on late September was, however, mainly affected by the rate of shoot senescence since late August (Fig. 2, Table 3). 3. Shoot GR from sprouting to July 1 was larger when maximum and minimum temperature was higher. The simple correlation coefficients of shoot GR with these factors were, however, realtively low. It seemed also to be effected by solar radiation and with maximum temperature in three varieties, i.e. it was smaller when maximum temperature was within 22°- 23℃ and precipitation was less than 0.5mm/day (Fig. 5). 4. The relations of solar radiation with shoot GR on July and with shoot weight on August, and of solar radiation with shoot weight of September were significantly negative. The results indicated that potato plants increased the shoot growth and retarded the shoot sensecence when solar radiation was limited, which would result in minimizing the decrease of solar radiation interception by the shoot (Figs. 5, 6, 7).
Type: article
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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