|Table of Contents|

Drought Resistance Evaluation of Five Plants of Ground Cover in the Garden of Taiyuan and Screening of the Drought-resistance Index

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年15
Page:
65-72
Research Field:
Publishing date:

Info

Title:
Drought Resistance Evaluation of Five Plants of Ground Cover in the Garden of Taiyuan and Screening of the Drought-resistance Index
Author(s):
BO WeiWANG SongKANG HongmeiWANG JinXUE Xinping
(College of Horticulture,Shanxi Agricultural University,Taiyuan,Shanxi 030031)
Keywords:
ground cover plantsdrought resistancesubordinate function analysisprincipal components analysisstepwise regression analysis
PACS:
-
DOI:
10.11937/bfyy.20205129
Abstract:
The drought resistant capability of five common ground cover plants in the garden of Taiyuan was studied based on the water-controlled pot experiment (continuous drought 0 day,5 days,10 days,15 days,20 days).The relative water content,electrical conductivity,the content of malondialdehyde,soluble protein and other indexes of the tested plants were measured respectively.Subordinate function analysis,correlation analysis,principal component analysis,cluster analysis and stepwise regression analysis were used to evaluate the drought resistance of five ground cover plants and screen drought tolerance index in order to provide reference for the rational maintenance and selection of garden ground cover plants in Taiyuan.The results showed that under the condition of drought stress,the drought resistance coefficients of each index of five ground cover plants were inconsistent,and there was significant correlation between some indexes.Twelve drought-resistance indexes could be classified into three component parts by principal components analysis based on subordinate function value,extent of injury factor,chlorophyll factor,photochemical efficiency and water status factor.Three principal factors presented 97.422% of the information of the 12 indexes.Iris germanica and Hosta plantaginea ‘Golden Tiara’ had the strongest drought-resistance for the three principal factors,respectively.According to the clustering analysis,the five ground cover plants could be clustered into three groups,and Hosta plantaginea ‘Golden Tiara’,Iris germanica and Sedum spectabile belonged to the strong drought-resistance group.Combined with stepwise regression analysis,leaf water loss rate,relative water content,soluble protein content and maximum quantum yield of PSⅡ could be used as important indexes to evaluate the drought resistance of tested ground cover plants.

References:

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Last Update: 2021-11-22