|Table of Contents|

Comparative Study on Drought Resistance of Four Wild Potentilla in Heilongjiang Province

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年16
Page:
97-103
Research Field:
Publishing date:

Info

Title:
Comparative Study on Drought Resistance of Four Wild Potentilla in Heilongjiang Province
Author(s):
PENG Kuili; DONG Jie; GAO Peng; HUANG Jiaxin; WANG Xue; CHE Daidi
(College of Horticulture and Landscape,Northeast Agricultural University,Harbin,Heilongjiang 150030)
Keywords:
wild Potentilla; cell structure; physiological index; chlorophyll fluorescence parameters; drought resistance
PACS:
-
DOI:
10.11937/bfyy.20190082
Abstract:
Selecting wild plant resources with strong drought resistance is very important in Heilongjiang Province.The cytology,chlorophyll fluorescence parameters and physiological indexes of 4 wild Potentilla species under drought treatment were measured.The results showed that the cell structure of 4 Potentilla leaves changed uniformly,and P.tanacetifolia thickened a layer of palisade tissue.There were significant difference of 4 Potentilla on photosynthetic capacity,in which P.fragarioodes had minimum decline of maximum photochemical efficiency(Fv/Fm) of PSⅡ,apparent photosynthetic efficiency (ETR),PSⅡ actual photosynthetic efficiency (PSⅡ) and photochemical quenching coefficient (qP) among 4 species.That meant there were the lowest damage of photosynthetic system in P.fragarioodes leaves under stress.Meanwhile,relative conductivity (REC),malondialdehyde (MDA) contents,peroxidase (POD) activity and superoxide dismutase (SOD) activity of 4 plants indicated same trend.The results suggested that the drought resistance of 4 Potentilla were P.fragarioodes>P.chinensis>P.tanacetifolia>P.centigrana,which were analyzed by comprehensive membership function.

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Last Update: 2019-08-29