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Paper Information

Journal:   SEED RESEARCH (JOURNAL OF SEED SCIENCE AND TECHNOLOGY)   WINTER 2012 , Volume 1 , Number 1 (1); Page(s) 41 To 52.
 
Paper: 

EVALUATION CARDINAL TEMPERATURES OF GERMINATION IN RICE (ORIZA SATIVA L.) CULTIVARS

 
 
Author(s):  GHOLAMI TILEBENI H.*, KORD FIROUZ JAEE GH., ZEINALI E.
 
* YOUNG RESEARCHERS CLUB, GORGAN BRANCH, ISLAMIC AZAD UNIVERSITY, GORGAN, IRAN
 
Abstract: 

Understanding the seed germination response of cultivated genotypes to temperature is important, agronomically. The genotypes that germinate in lower temperatures could be useful for situations where temperatures are low in germination stage. Therefore, this experiment was conducted to study the cardinal temperatures, response to sub- and supra-optimal temperatures and thermal tolerance of seed germination in 15 rice cultivars from the north of Iran. The effects of seven constant temperatures between 12, 16, 20, 25, 27, 30, 33, 36 and 40oc on the seed germination characteristics were also evaluated. The base (Tb), optimum (To) and maximum or ceiling (Tc) temperature for germination changed from 10.06 to 11.69oc, 30.42 to 32.97oc and 40.15 to 43.84oc, respectively. The analysis of variance revealed no significant differences between cultivars for cardinal temperatures. The effect of cultivar on thermal tolerance was not also significant, but differences between cultivars for thermal tolerance in supra-optimal temperatures were more than sub-optimal temperatures. Generally, all cultivars were more responsive to supra-optimal temperatures than sub-optimal temperatures. In the other hand, the slope of regression line of germination rate (GR) versus supra-optimal temperatures was more than that of sub-optimal temperatures.

 
Keyword(s): TEMPERATURE, SEED GERMINATION, CARDINAL TEMPERATURES, NONLINEAR MODELS
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

GHOLAMI TILEBENI, H., & KORD FIROUZ JAEE, G., & ZEINALI, E. (2012). EVALUATION CARDINAL TEMPERATURES OF GERMINATION IN RICE (ORIZA SATIVA L.) CULTIVARS. SEED RESEARCH (JOURNAL OF SEED SCIENCE AND TECHNOLOGY), 1(1 (1)), 41-52. https://www.sid.ir/en/journal/ViewPaper.aspx?id=276648



Vancouver: Copy

GHOLAMI TILEBENI H., KORD FIROUZ JAEE GH., ZEINALI E.. EVALUATION CARDINAL TEMPERATURES OF GERMINATION IN RICE (ORIZA SATIVA L.) CULTIVARS. SEED RESEARCH (JOURNAL OF SEED SCIENCE AND TECHNOLOGY). 2012 [cited 2021July25];1(1 (1)):41-52. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=276648



IEEE: Copy

GHOLAMI TILEBENI, H., KORD FIROUZ JAEE, G., ZEINALI, E., 2012. EVALUATION CARDINAL TEMPERATURES OF GERMINATION IN RICE (ORIZA SATIVA L.) CULTIVARS. SEED RESEARCH (JOURNAL OF SEED SCIENCE AND TECHNOLOGY), [online] 1(1 (1)), pp.41-52. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=276648.



 
 
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