QUANTIFYING SEED GERMINATION RESPONSE OF CHICKPEA GENOTYPES (CICER ARIETINUM) UNDER TEMPERATURE AND DROUGHT STRESS REGIMES

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GANJEALI A.; PARSA M.; KHATIB M.

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Journal: AGRICULTURAL RESEARCH Year:2008 | Volume:8 | Issue:1 (A) Page(s): 77-88

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Title

QUANTIFYING SEED GERMINATION RESPONSE OF CHICKPEA GENOTYPES (CICER ARIETINUM) UNDER TEMPERATURE AND DROUGHT STRESS REGIMES

Author(s)

GANJEALI A. | PARSA M. | KHATIB M. | Issue Writer Certificate

Keywords

CHICKPEAQ2

CARDINAL TEMPERATURESQ2

DROUGHT STRESSQ2

GERMINATION RATE AND THERMAL TIMEQ2

Abstract

Knowledge improvement about seed germination response to soil moisture and temperature in order to determine the best times for sowing date is important, unfortunately information about seed germination response of CHICKPEA to temperature, DROUGHT STRESS and their interactions are limited, So the main objectives of this experiment were quantifying seed germination response and predicting of CARDINAL TEMPERATURES, physiological days and thermal time requirement for seed germination in CHICKPEA. To this, a split plot factorial experiment based on a completely randomized design with 6 CHICKPEA genotypes (MCC.361, MCC.951, MCC.180, MCC.873, MCC.13 and MCC.463) and a range of temperatures (3, 5, 10, 15, 20, 25, 30 and 35oC) and DROUGHT STRESS levels (0, -4, -8, -12 and -16 bar) with three replications was conducted. There was no germination on -8, -12 and -16 bar, so these levels were omitted. The percentage of germinated seeds was recorded daily, and germination rate (1/D50) was calculated based on inversing the time taken to reach to 50% cumulative germination. To quantify the response of germination rate to temperature and to determine CARDINAL TEMPERATURES, physiological days and thermal time requirement for germination, Dent-like model was applied. Temperature, DROUGHT STRESS (-4 bar) and their interactions, had a significant influences on final germination percentage and germination rate of CHICKPEA genotypes. The lower and higher temperature regimes than optimum, had more restrictive effects on germination traits in stress compared to non stress (0 bar) condition. There were considerable genetic variations among genotypes regarding to final germination percentage and germination rate. MCC.463 and MCC.873 genotypes had the highest final germination percentage both in stress and non stress conditions, but on these genotypes, germination rate was the highest only in non stress condition. Overall, mean and optimum temperature range for germination, were estimated 20-26oC, and it was the same in stress and non stress conditions. There were significant differences among genotypes for physiological days and thermal time requirement for germination, only in stress condition. DROUGHT STRESS increased thermal time requirement for germination 2.8 times compared to non stress.

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APA: Copy

GANJEALI, A., PARSA, M., & KHATIB, M.. (2008). QUANTIFYING SEED GERMINATION RESPONSE OF CHICKPEA GENOTYPES (CICER ARIETINUM) UNDER TEMPERATURE AND DROUGHT STRESS REGIMES. AGRICULTURAL RESEARCH, 8(1 (A)), 77-88. SID. https://sid.ir/paper/84738/en

Vancouver: Copy

GANJEALI A., PARSA M., KHATIB M.. QUANTIFYING SEED GERMINATION RESPONSE OF CHICKPEA GENOTYPES (CICER ARIETINUM) UNDER TEMPERATURE AND DROUGHT STRESS REGIMES. AGRICULTURAL RESEARCH[Internet]. 2008;8(1 (A)):77-88. Available from: https://sid.ir/paper/84738/en

IEEE: Copy

A. GANJEALI, M. PARSA, and M. KHATIB, “QUANTIFYING SEED GERMINATION RESPONSE OF CHICKPEA GENOTYPES (CICER ARIETINUM) UNDER TEMPERATURE AND DROUGHT STRESS REGIMES,” AGRICULTURAL RESEARCH, vol. 8, no. 1 (A), pp. 77–88, 2008, [Online]. Available: https://sid.ir/paper/84738/en

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