Japanese Journal of Crop Science | |
Effects of Day Length on Gas Exchange Characteristics in Crassulacean Acid Metabolism Plant, Dendrobium Ekapol cv. Panda | |
Ken-ichi ARISUMI1  Seiichi MURAYAMA1  Yoshinobu KAWAMITSU1  Akihiro NOSE1  Fumiaki SEKIZUKA1  | |
关键词: Crassulacean acid metabolism; æ‹¡æ•£ä¼å°Žåº¦; Day length; CAMåž‹å…‰åˆæˆ; Dendrobium Ekapol cv; デンドãƒãƒ“ウム(Dendrobium Ekapol cv. Panda); Panda; 日長; Leaf conductance; ホスホエノールピルビン酸カルボã‚シラーゼ; Malate susceptibility; リンゴ酸感å—性; Phosphoenolpyruvate carboxylase; | |
DOI : 10.1626/jcs.64.201 | |
学科分类:农业科学(综合) | |
来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan | |
【 摘 要 】
Effects of growth day length on gas exchange characteristics were investigated in a crassulacean acid metabolism (CAM) plant, Dendrobium Ekapol cv. Panda. Long (16h) and short (10h) day lengths were treated for 57 to 60 days in a growth chamber set at day/night temperatures of 30/25°C. As a control, plants were grown under natural conditions (light period was 12h). The data showed that the diurnal CO2 exchange of D.Ekapol was classified as typical crassulacean acid metabolism type, an obligate CAM. The CO2 balance of each phase was affected by the day length treatments. The CO2 balances of short-day-length grown plants were increased in phase 1, whereas those of long-day-length grown plants were increased in phases 2 and 4. The CO2 balance of whole day and diurnal malate fluctuation was increased in natural and short-day-length grown plants. The activity of phosphoenolpyruvate carboxylase did not response to the day length treatments. However, susceptibility of phosphoenolpyruvate carboxylase to malate was detected clearly in phase 4 and at the beginning of phase 1 under different day length. It was suggested that the difference between treatments was related to the changes in the CO2 exchange rate in those phases.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912010130582ZK.pdf | 982KB | download |