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Effect of Lanthanum on the Cold Resistance of Citrullus lanatus Seedlings(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年24期
Page:
12-15
Research Field:
Publishing date:

Info

Title:
Effect of Lanthanum on the Cold Resistance of Citrullus lanatus Seedlings
Author(s):
SUN Ji-qing1; CHEN Ke1; SHI Jin-sheng2; LIU Run-jin1; LI Min1
1.Institute of Mycorrhizal Biotechnology，Qingdao Agricultural University，Qingdao，Shandong 266109；
2.College of Chemistry and Pharmacy，Qingdao Agricultural University，Qingdao，Shandong 266109
Keywords:
Citrullus lanatus; lanthanum; cold resistance
PACS:
S 651
DOI:
-
Abstract:
A pot experiment was carried out to investigate the effects of lanthanum on the cold tolerance of watermelon(Citrullus lanatus cv.‘Jingxin 4’) seedlings.Watermelon seedlings with 3 leaves were treated with 200 mg/L of LaCl3 and then exposed at low temperature(day 12℃/night 6℃)，sub-hypothermia (day 18℃/night 10℃) and normal temperature (day 30℃/night 20℃) conditions training，and then contents of chlorophyll，proline，soluble sugar and malondialdehyde (MDA)，superoxide dismutase (SOD)，peroxidase (POD) and catalase (CAT) activity in leaves of watermelon seedlings were determined in five days later.The results showed that lanthanum could improve the content of chlorophyll，soluble sugar，proline and the activity of SOD，POD，CAT，reduce the accumulation of MDA of watermelon seedlings in the low temperature and sub-hypothermia conditions.It was concluded that lanthanum with certain concentration could improve the cold tolerance of watermelon seedlings.

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Last Update: 2014-08-31