|Table of Contents|

Effects of Exogenous GA3 on Physiological Effect of Peony ‘White Snow Tower’ at Flowering Stage

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年20
Page:
37-45
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous GA3 on Physiological Effect of Peony ‘White Snow Tower’ at Flowering Stage
Author(s):
TAO Liangru12MI Yinfa2
(1.Landscape Engineering College,Henan Agricultural Vocational College,Zhengzhou,Henan 451450;2.College of Horticulture and Plant Protection,Henan University of Science and Technology,Luoyang,Henan 471003)
Keywords:
peonyexogenous GA3flowering stagephysiological effect‘White Snow Tower’
PACS:
S 682.1
DOI:
10.11937/bfyy.20240481
Abstract:
Taking peony ‘White Snow Tower’ as the test material,using plant spraying method,the effects of exogenous GA3 on the physiological effect of peony at flowering stage were studied,in order to provide reference for the florescence regulation,cut flower production and tourism income generation in peony industry.The results showed that 500 mg·L-1 GA3 could accelerate the flowering time of ‘White Snow Tower’ by 4-5 days and prolong the flowering time by 2-3 days.At the same time,the contents of ABA in young leaves and petals were significantly decreased,and the contents of GA3,IAA,the ratios of IAA/ABA,GA3/ABA and (IAA+GA3)/ABA were increased.Low content of ABA and high ratio of (IAA+GA3)/ABA were important internal hormone regulatory factors for the flowering duration of ‘White Snow Tower’.In addition,the application of GA3 significantly decreased the production rate of O·〖TX--*9〗2,the content of MDA,but increased the content of soluble protein and the activity of SOD.Compared with the control,the soluble protein content and SOD activity in young leaves increased by 39.3%-118.2% and 20.7%-38.3%,respectively.The content of soluble protein and the activity of SOD increased by 43.0%-60.3% and 23.9%-57.0% respectively(P<0.05).The increase of soluble protein content and SOD activity could effectively alleviate the peroxidation damage of cell membrane lipid caused by excessive reactive oxygen species induced by flowering senescence,played an important role in defense.

References:

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Last Update: 2024-10-29