|Table of Contents|

Effects of Drought Stress on Seed Germination of Three Compositae Species

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年16
Page:
56-61
Research Field:
Publishing date:

Info

Title:
Effects of Drought Stress on Seed Germination of Three Compositae Species
Author(s):
GAO Qunying; YU Zhanjing; SUN Wenqing; LYU Jian
(College of Life Science，Hengshui University，Hengshui，Hebei 053000)
Keywords:
Tagetes erecta L.; Tagetes patula L.; Zinnia elegans Jacq.; drought stress
PACS:
-
DOI:
10.11937/bfyy.20193460
Abstract:
Influence of three kinds of Compositae plants seed germination on the drought stress was studied with Tagetes erecta L.,Tagetes patula L.and Zinnia elegans Jacq.as the test material.PEG-6000 (PEG) solution at concentration index of 5%,10%,15% and 20% was used to simulate drought stress with distilled water (concentration of 0% PEG-6000) as a contrast.Morphology index such as germination rate,germination potential,germination index,root length,seedling height,fresh weight and vigor index were mensurated and calculated in order to select the best one for plant furnishing.The results showed that seed germination was significantly different under different degrees of drought stress.With the increase of PEG-6000 (polyethylene glycol) solution concentration,seed germination rate,germination index and activity index decreased,and the inhibitory effect enhanced.Different species had different drought resistance.Among the three Compositae plants,Tagetes patula had the strongest drought resistance,with the highest germination rate,germination index and activity index,and Zinnia elegans had the weakest drought resistance,with the lowest germination rate,germination index and activity index.The order of drought resistance was Tagetes patula >Tagetes erecta >Zinnia elegans.

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Last Update: 2020-11-23