کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8470337 | 1549944 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphological and phylogenetic relationships within Viola sect. Sclerosium (Violaceae) in Iran
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Morphological and phylogenetic relationships within Viola sect. Sclerosium (Violaceae) in Iran Morphological and phylogenetic relationships within Viola sect. Sclerosium (Violaceae) in Iran](/preview/png/8470337.png)
چکیده انگلیسی
Viola sect. Sclerosium contains up to seven taxa distributed from northeastern Africa to western India. Here we used morphometry and Bayesian phylogenetic analyses of a low-copy nuclear gene (NRPD2a) to investigate the systematics of its three taxa occurring in Iran, i.e., V. behboudiana, V. cinerea, and V. stocksii. Features of stipules, and indument of peduncle, ovary and capsule were found to be important in separating the taxa morphologically. Divergence times, estimated using a relaxed molecular clock, suggest a crown node age of 4.1-10.1 million years (Ma) for sect. Sclerosium, coinciding in time with the intensification of the Indian monsoon. Ancestral (meso-) tetraploidy was inferred for V. stocksii and (neo-) allooctoploidy for V. behboudiana and V. cinerea, both of which were inferred to be alloploids of the V. stocksii lineage and another, unsampled lineage within sect. Sclerosium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flora - Morphology, Distribution, Functional Ecology of Plants - Volume 215, August 2015, Pages 67-74
Journal: Flora - Morphology, Distribution, Functional Ecology of Plants - Volume 215, August 2015, Pages 67-74
نویسندگان
Maryam Mohammadi Shahrestani, Thomas Marcussen, Shahryar Saeidi Mehrvarz, Narjes Yousefi,