نتایج جستجو برای: ranunculus
تعداد نتایج: 490 فیلتر نتایج به سال:
آرایه Crocus danfordiae subsp. kurdistanicus به عنوان زیرگونه جدیدی شرح داده می‌شود. این زیر گونه با زیر گونه تیپ، با داشتن قطعات زرد پررنگ و براق تمیز داده می‌شود. آرایه‌های Laserpitiumcarduchorum، Amberboaglauca و Lathyrusbrachypterusvar. haussknechtiiبرای اولین بار از ایران گزارش می‌شوند. گونه Ranunculus lingua که قبلاً فقط از شمال ایران گزارش شده بود. اکنون از غرب ایران در استان کردستان گزار...
In a project on the Flora of Iran (Trib.: Ranunculeae), many herbarium specimens of thegenus Ranunculus were studied. The results of this study are a new record and suggestion of a synonym for the Flora of Iran, specimens of which are preserved in the herbarium of Research Institute of Forest & Rangelands (TARI).
Genome evolution in asexual organisms is theoretically expected to be shaped by various factors: first, hybrid origin, and polyploidy confer a genomic constitution of highly heterozygous genotypes with multiple copies of genes; second, asexuality confers a lack of recombination and variation in populations, which reduces the efficiency of selection against deleterious mutations; hence, the accu...
Microsatellites are widely used in genetic and evolutionary analyses, but their own evolution is far from simple. The mechanisms maintaining the mutational patterns of simple repeats and the typical stable allele-frequency distributions are still poorly understood. Asexual lineages may provide particularly informative models for the indirect study of microsatellite evolution, because their geno...
Ranunculus trichophyllus is an amphibious plant that produces thin and cylindrical leaves if grown under water but thick and broad leaves if grown on land. We found that such heterophylly is widely controlled by two plant hormones, abscisic acid (ABA) and ethylene, which control terrestrial and aquatic leaf development respectively. Aquatic leaves produced higher levels of ethylene but lower le...
Adaptation to aquatic habitats is a formidable challenge for terrestrial angiosperms that has long intrigued scientists. As part of a suite of work to explore the molecular mechanism of adaptation to aquatic habitats, we here sequenced the transcriptome of the submerged aquatic plant Ranunculus bungei, and two terrestrial relatives R. cantoniensis and R. brotherusii, followed by comparative evo...
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