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Publication
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| Title of Article |
Effects of Short- and Long-Term Temperature on Seed Germination, Oxidative Stress and Membrane Stability of Three Rice Cultivars (Dular, KDML105 and Riceberry) |
| Date of Acceptance |
13 September 2017 |
| Journal |
| Title of Journal |
TROPICAL AGRICULTURAL SCIENCE |
| Standard |
SCOPUS |
| Institute of Journal |
Universiti Putra Malaysia Press |
| ISBN/ISSN |
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| Volume |
8 |
| Issue |
41 |
| Month |
Februaey |
| Year of Publication |
2018 |
| Page |
151-162 |
| Abstract |
The reduction in rice productivity as a result of elevated daily temperature due to climate
change is a major concern for Thailand. This study aimed to investigate hydrogen peroxide
and malondialdehyde (MDA) content and electrolyte leakage of rice seedlings grown from
seeds exposed to different temperature (25°C, 35°C and 40°C) treatments over a short
(one week) and long (two weeks) period before germination. Three rice cultivars were
investigated, Dular, KDML105 and Riceberry. The experiment was designed in RCBD with
six replications. The results indicated that Riceberry seeds produced a greater percentage
of normal seedlings after both short- and long-term heat treatment (40°C). By contrast,
KDML105 seeds exposed to 40°C for one and two weeks gave rise to the highest percentage
of abnormal seedlings. The highest oxidative stress indicated by the accumulation of
hydrogen peroxide was found in abnormal seedlings of cvs. KDML105 and Riceberry
after short- and long-term heat (40°C) exposure, respectively. The effect of heat stress on
membrane stability was indicated by MDA content and electrolyte leakage. MDA content was the highest in abnormal seedlings of cv.
Riceberry after heat exposure for two weeks.
High electrolyte leakage due to both shortand
long-term high temperature treatment
was found in abnormal seedlings of all the
rice cultivars. Heat exposure to rice seeds
at 40°C for one week induced the highest
percentage of abnormal seedlings in KDML
105 coinciding with the highest hydrogen peroxide content and membrane damage.
These results provide crucial information
for consideration in breeding programmes
for heat-tolerant rice cultivars. |
| Keyword |
Temperature stress, seed germination, oxidative stress, membrane stability |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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