Chlorophyll a fluorescence responses of Haloxylon ammodendron seedlings subjected to progressive saline stress in the Tarim desert highway ecological shelterbelt
文献类型：期刊论文
| 作者 | Han ; W. ; Xu ; X. W. ; Li ; L. ; Lei ; J. Q. ; S. Y. |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2010 |
| 卷号 | 48期号:4页码:635-640 |
| 关键词 | PHOTOSYSTEM-II GAS-EXCHANGE EXCITATION LEAVES PLANTS LIGHT |
| ISSN号 | 0300-3604 |
| 通讯作者 | Xu, XW, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang 830011, Peoples R China |
| 中文摘要 | In order to assess the long-term impacts of saline groundwater irrigation to Haloxylon ammodendron, one of the main shrubs in the Tarim desert highway ecological shelterbelt, we irrigated the H. ammodendron seedlings with progressive saline groundwater (3-30 g L-1, simulation environment in the Tarim desert highway ecological shelterbelt) and investigated the diurnal variations of chlorophyll a (Chl a) fluorescence parameters, such as maximal quantum yield of photosystem II (PSII) photochemistry (F-v/F-m), quantum yield of photochemical energy conversion in PSII (Y-II), the apparent rate of electron transport at the PSII level (ETR), photochemical quenching coefficient (q(P)), non-photochemical quenching (NPQ), quantum yield of nonregulated non-photochemical energy loss in PSII (Y-NO) and quantum yield of regulated non-photochemical energy loss in PSII (Y-II), at approximately 2-h intervals. F-v/F-m with 5 g L-1 (S2) was lower than that with 2 g L-1 (S1) but a little higher than 20 g L-1 (S5), respectively. Under the low light [photosyntheticallyactive radiation (PAR) a parts per thousand currency sign 250 mu mol m(-2) s(-1), at 08:00, 10:00 and 20:00 h of the local time], S1 kept the lowest Y-II and the highest Y-NPQ; while under the high light (PAR a parts per thousand yen 1500 mu mol m(-2) s(-1)), the Y-II performed S1 > S2 > S5, and the reverse Y-NPQ; under mild light (250 mu mol m(t-2) s(-1) a parts per thousand currency sign PAR a parts per thousand currency sign 1500 mu mol m(-2) s(-1)), S1 remained the highest Y-II, no matter the light and the salinity, the similar Y-NO almost occurred basically. The results showed that the sand-binding plant H. ammodendron could regulate its energy-utilizing strategies. The S2 might be the most suitable salinity of the irrigation water for H. ammodendron in the Tarim desert highway ecological shelterbelt in the northwest of China. |
| 学科主题 | 农学 ; 环境科学 |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9846]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Han,W.,Xu,et al. Chlorophyll a fluorescence responses of Haloxylon ammodendron seedlings subjected to progressive saline stress in the Tarim desert highway ecological shelterbelt[J]. PHOTOSYNTHETICA,2010,48(4):635-640. |
| APA | Han.,W..,Xu.,X. W..,Li.,...&S. Y..(2010).Chlorophyll a fluorescence responses of Haloxylon ammodendron seedlings subjected to progressive saline stress in the Tarim desert highway ecological shelterbelt.PHOTOSYNTHETICA,48(4),635-640. |
| MLA | Han,et al."Chlorophyll a fluorescence responses of Haloxylon ammodendron seedlings subjected to progressive saline stress in the Tarim desert highway ecological shelterbelt".PHOTOSYNTHETICA 48.4(2010):635-640. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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