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Weerasin Sonjaroon. Effect of brassinosteriod mimics application on photosynthesis system and carbohydrate status in rice under hight temperature stress. Doctoral Degree(Botany). Kasetsart University. Office of the University Library. : Kasetsart University, 2018.
Effect of brassinosteriod mimics application on photosynthesis system and carbohydrate status in rice under hight temperature stress
Name: Weerasin Sonjaroon
Classification :.LCCS: QK495.G74
LCSH:
Rice
-- Effect of temperature on
LCSH:
Brassinosteroids
LCSH:
Plant regulators
LCSH:
Carbohydrates
LCSH:
Photosynthesis
Abstract:
Brassinosteroids (BRs) are one of the steroid groups and are classified as a plant growth regulator. The brassinosteroid mimics have structural and function similar to BRs. The brassinosteroid mimics used in the present study were 7,8- dihydro-8α-20-hydroxyecdysone (DHECD) and 7,8-dihydro-5α,8α-20- hydroxyecdysone (αDHECD), which were chemically modified from 20- hydroxyecdysone (ECD). The aim of the work was to investigate the role of brassinosteroid mimics on photosynthetic at vegetative, panicle initiation, booting and anthesis growth stages and carbohydrate status at booting and anthesis growth stages in rice under high temperature stress. The result showed that BR mimics at 1 µM is sufficient for mitigating the effects of heat stress in rice at vegetative, and panicle initiation growth stages. At booting and anthesis growth stages of rice, BR mimics at 1 nM is sufficient for mitigating the effects of heat stress. BR mimics improved the photosynthetic rate and maximal quantum yield of PSII and chlorophyll contents at vegetative, panicle initiation, booting and anthesis growth stages of rice under high temperature conditions. BR mimics application also increased carbohydrate status; carbohydrate enzymes, sugars and starch contents at anthesis growth stages of rice. The increase of carbohydrate status leads to increase of yield in rice plants under high temperature conditions. Consequently, BR mimics can protect the reduction of photosynthesis in rice at all growth stages and also increased carbohydrate establishing and accumulation from heat stress. Moreover, the study application of BR mimic counteracted high temperatures during the summer season by increasing the rice yield. Results of the study indicated that brassinosteroid mimics had high efficiency in improving the photosynthetic performance and rice seed set under heat stress.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Kanapol Jutamanee
Role:
Thesis Advisor
Name: Ornusa Khamsuk
Role:
Thesis CO-Advisor
Created:
2018
Modified:
2025-06-29
Issued:
2025-06-29
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2560/weerasin-son-all.pdf
CallNumber:
QK495.G74 .W44
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degree
Descipline: Botany
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.025101 วินาที
Weerasin Sonjaroon
| Title | Contributor | Type |
|---|---|---|
| Effect of brassinosteriod mimics application on photosynthesis system and carbohydrate status in rice under hight temperature stress
มหาวิทยาลัยเกษตรศาสตร์ Weerasin Sonjaroon | Kanapol Jutamanee Ornusa Khamsuk | วิทยานิพนธ์/Thesis |
Kanapol Jutamanee
Ornusa Khamsuk
| Title | Creator | Type and Date Create |
|---|---|---|
| Effect of brassinosteriod mimics application on photosynthesis system and carbohydrate status in rice under hight temperature stress
มหาวิทยาลัยเกษตรศาสตร์ Kanapol Jutamanee;Ornusa Khamsuk | Weerasin Sonjaroon | วิทยานิพนธ์/Thesis |
| The physiological characteristics and gene expression of drought-tolerant chili from the mutant induction by gamma radiation
มหาวิทยาลัยเกษตรศาสตร์ Ornusa Khamsuk | Gadewara Matmarurat | วิทยานิพนธ์/Thesis |