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Effect of Ultraviolet B Irradiation in Seedling Stage on Growth and Physiological Activity of Luffa Leaf(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年20期
Page:
36-39
Research Field:
Publishing date:

Info

Title:
Effect of Ultraviolet B Irradiation in Seedling Stage on Growth and Physiological Activity of Luffa Leaf
Author(s):
YANG Tian-hui; LI Mei-qin; LYU Jin-fu; LIN Gui-yu; PEI Hua-li; LIU Yong-guang
Institute of Vegetables and Flowers,Weifang University of Science and Technology,Shouguang,Shandong 262700
Keywords:
luffa; ultraviolet B; photosynthetic parameter; enzymatic activity
PACS:
S 642.4；S 124+.2
DOI:
-
Abstract:
Taking ‘Weike No.1’luffa as materials,effect of ultraviolet B(UVB) irradiation in seedling stage on growth and photosynthetic activity of luffa leaf were studied.The results showed that,properly UV-B irradiation could induce the loofah plant growth,and increase the water use efficiency；UV-B irradiation could inhibit sustained loofah plant growth,reduce the net photosynthetic rate and stomatal conductance of the luffa leaf,and aggravated photo inhibition of PSII,at the same time it could improve the water use efficiency and antioxidant enzyme activities of leaves.And 10 days of UV-B exposure only in the seedling stage,could significantly promote plant growth,improve the net photosynthetic rate of seedling leaf,but also reduce stomatal conductance,thereby significantly improve leaf photosynthetic water use efficiency at seedling stage,while UV-B treatment significantly increased the seedling leaf antioxidant enzyme activity,thereby improving seedling leaves photo inhibition resistant.It showed that,moderate UV-B exposure was a economic effective method that could promote the luffa plant growth,and reduce water consumption.

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Last Update: 2014-11-19