RECOGNIZING OF DROUGHT TOLERANCE IN SUNFLOWER HYBRIDS ACCORDING TO ECOPHYSIOLOGIC CHARACTERISTICS

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JABBARI H.; DANESHIAN J.; ABAS AKBARI GH.; ALAHDADI I.

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Journal: JOURNAL OF CROP ECOPHYSIOLOGY Year:2011 | Volume:2 | Issue:4 Page(s): 261-270

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Title

RECOGNIZING OF DROUGHT TOLERANCE IN SUNFLOWER HYBRIDS ACCORDING TO ECOPHYSIOLOGIC CHARACTERISTICS

Author(s)

JABBARI H. | DANESHIAN J. | ABAS AKBARI GH. | ALAHDADI I. | Issue Writer Certificate

Keywords

DROUGHT STRESSQ2

LEAF AREA INDEXQ2

REMOBILIZATIONQ2

STOMATA CONDUCTIVITYQ3

SUNFLOWERQ3

Abstract

In order to study of drought tolerance in 4 SUNFLOWER hybrids according to ecophysiologic characteristics, three separate experiments were conducted as randomized complete block design at the research field of Seed and Plant Improvement Institute-Karaj in 2006. The first experiment conducted at optimum conditions and plants were irrigated after 60 mm evaporation from evaporation pan, class A, whereas the second and third experiments were irrigated after 120 and 180 mm evaporation from evaporation pan. These were considered as mild and sever DROUGHT STRESS conditions, respectively. Combined analysis of variance results indicated that DROUGHT STRESS had significant effect on ecophysiologic and agronomic characteristics and LEAF AREA INDEX (LAI), specific leaf area (SLA), solar radiation interception and REMOBILIZATION showed significant difference among hybrids. Also, interaction effect between stress and hybrids was significant on specific leaf area (SLA), LEAF AREA INDEX (LAI), REMOBILIZATION and STOMATA CONDUCTIVITY. DROUGHT STRESS caused a decrease in specific leaf area (SLA), LEAF AREA INDEX (LAI), solar radiation interception, STOMATA CONDUCTIVITY, yield and its components, whereas REMOBILIZATION increased under DROUGHT STRESS. Under sever DROUGHT STRESS, Allstar hybrid had the highest specific leaf area (125 cm2.g-1), LEAF AREA INDEX in flowering stage (1.8) and STOMATA CONDUCTIVITY (1.41 mol.m2.s-1) and appropriate REMOBILIZATION (47 g). Also, in three treatments irrigation, Allstar hybrid exhibited the highest seed yield as 3227, 1671 and 702 kg.ha-1 respectively.

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APA: Copy

JABBARI, H., DANESHIAN, J., ABAS AKBARI, GH., & ALAHDADI, I.. (2011). RECOGNIZING OF DROUGHT TOLERANCE IN SUNFLOWER HYBRIDS ACCORDING TO ECOPHYSIOLOGIC CHARACTERISTICS. JOURNAL OF CROP ECOPHYSIOLOGY, 2(4), 261-270. SID. https://sid.ir/paper/176440/en

Vancouver: Copy

JABBARI H., DANESHIAN J., ABAS AKBARI GH., ALAHDADI I.. RECOGNIZING OF DROUGHT TOLERANCE IN SUNFLOWER HYBRIDS ACCORDING TO ECOPHYSIOLOGIC CHARACTERISTICS. JOURNAL OF CROP ECOPHYSIOLOGY[Internet]. 2011;2(4):261-270. Available from: https://sid.ir/paper/176440/en

IEEE: Copy

H. JABBARI, J. DANESHIAN, GH. ABAS AKBARI, and I. ALAHDADI, “RECOGNIZING OF DROUGHT TOLERANCE IN SUNFLOWER HYBRIDS ACCORDING TO ECOPHYSIOLOGIC CHARACTERISTICS,” JOURNAL OF CROP ECOPHYSIOLOGY, vol. 2, no. 4, pp. 261–270, 2011, [Online]. Available: https://sid.ir/paper/176440/en

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