KARYOLOGICAL AND NUCLEAR DNA CONTENT VARIATION IN SOME IRANIAN ENDEMIC THYMUS SPECIES (LAMIACEAE)

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MAHDAVI S.; KARIMZADEH G.

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Journal Paper

Paper Information

Journal: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST) Year:2010 | Volume:12 | Issue:4 Page(s): 447-458

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Information Journal Paper

Title

KARYOLOGICAL AND NUCLEAR DNA CONTENT VARIATION IN SOME IRANIAN ENDEMIC THYMUS SPECIES (LAMIACEAE)

Author(s)

MAHDAVI S. | KARIMZADEH G. | Issue Writer Certificate

Keywords

CHROMOSOME

DNA C-VALUE

GENOME SIZE

MEDICINAL PLANT

THYMUS DAËNENSIS

T. ERIOCALYX

T. MIGRICUS

Abstract

Thymus is a MEDICINAL PLANT which contains one of the world's top ten essential oils, exhibiting antibacterial, antioxidative, food preservative and mammalian age-delaying properties. This work was aimed at identifying between-species variations requiring for selecting appropriate parents for hybridization. Six Iranian endemic Thymus accessions belonging to THYMUS DAËNENSIS, T. ERIOCALYX and T. MIGRICUS were studied. Root tips were examined for karyological studies and fresh young leaves of the standard reference (Parsley, Petroselinum crispum, 2C DNA= 4.45 pg) and the Thymus samples stained with propidium iodide (PI) for flow cytometric (FCM) measurements. Two ploidy levels (diploid and tetraploid) and 3 CHROMOSOME numbers (30, 56, 60) were recognized. The latter CHROMOSOME number is being reported for the first time on T. daënensis accession. FCM measurements showed that 2C DNA contents varied from 1.02 to 2.42 pg, verifying more than 2-fold variations and showing a GENOME SIZE range of 499 to 1182 Mbp, correspondingly. The mean amount of 2C DNA/CHROMOSOME and mean of monoploid GENOME SIZE were not proportional to ploidy. 2C-values were correlated with, and linearly regressed upon somatic metaphase, considering either total CHROMOSOME volume (TCV) or total chromatin length (X).

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APA: Copy

MAHDAVI, S., & KARIMZADEH, G.. (2010). KARYOLOGICAL AND NUCLEAR DNA CONTENT VARIATION IN SOME IRANIAN ENDEMIC THYMUS SPECIES (LAMIACEAE). JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), 12(4), 447-458. SID. https://sid.ir/paper/571685/en

Vancouver: Copy

MAHDAVI S., KARIMZADEH G.. KARYOLOGICAL AND NUCLEAR DNA CONTENT VARIATION IN SOME IRANIAN ENDEMIC THYMUS SPECIES (LAMIACEAE). JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST)[Internet]. 2010;12(4):447-458. Available from: https://sid.ir/paper/571685/en

IEEE: Copy

S. MAHDAVI, and G. KARIMZADEH, “KARYOLOGICAL AND NUCLEAR DNA CONTENT VARIATION IN SOME IRANIAN ENDEMIC THYMUS SPECIES (LAMIACEAE),” JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), vol. 12, no. 4, pp. 447–458, 2010, [Online]. Available: https://sid.ir/paper/571685/en

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