نتایج جستجو برای: petals color

تعداد نتایج: 123121  

Journal: :avicenna journal of phytomedicine 0
parisa sadighara department of environmental health, food safety division, faculty of public health, tehran university of medical sciences, tehran, i. r. iran soraya gharibi academic center of education, culture and research (acecr), tehran, i. r. iran amir moghadam jafari department of toxicology, ferdowsi university of mashhad, mashhad, i. r. iran golamreza jahed khaniki department of environmental health, food safety division, faculty of public health, tehran university of medical sciences, tehran, i. r. iran samira salari department of medical mycology and parasitology, school of medicine, kerman university of medical sciences, kerman, i. r. iran

objective: there has been a growing interest in finding plants with biological active ingredients for medicinal application. materials and methods: three colors of petals of althaea officinalis (a. officinalis) flowers, i.e., pink, reddish pink, and white were examined for total antioxidant activity and flavonoids content. results: the reddish pink flowers of a. officinalis have more antioxidant...

2016
Judit Berman Yanmin Sheng Lourdes Gómez Gómez Tania Veiga Xiuzhen Ni Gemma Farré Teresa Capell Javier Guitián Pablo Guitián Gerhard Sandmann Paul Christou Changfu Zhu

Flower color is an important characteristic that determines the commercial value of ornamental plants. Gentian flowers occur in a limited range of colors because this species is not widely cultivated as a cut flower. Gentiana lutea L. var. aurantiaca (abbr, aurantiaca) is characterized by its orange flowers, but the specific pigments responsible for this coloration are unknown. We therefore inv...

2014
Deqiang Tai Ji Tian Jie Zhang Tingting Song Yuncong Yao

Chalcone synthase is a key and often rate-limiting enzyme in the biosynthesis of anthocyanin pigments that accumulate in plant organs such as flowers and fruits, but the relationship between CHS expression and the petal coloration level in different cultivars is still unclear. In this study, three typical crabapple cultivars were chosen based on different petal colors and coloration patterns. T...

Journal: :The Plant cell 1993
C. Martin T. Gerats

Sexual reproduction in flowering plants depends on the evocation of flowers, which, in general, consist of four whorls of organs: sepals, petals, anthers, and pistil. Sepals and petals can be regarded as initially protective organs. During the first stage of floral development, meiosis occurs in the anthers and the pistil while these organs are still enclosed by the sepals. Petals, the organs o...

ژورنال: گلجام 2014
طالب‌پور, فریده, ویسیان, سید محمد,

This research work involves the dyeing of wool yarns with saffron petals as a source for green color. At first step woolen pile yarns treated with four different mordents, namely: tin chloride, copper sulfate, aluminum sulfate and iron(II) sulfate in acidic condition using acetic, oxalic, citric and lactic acids respectively. In this study the possibility of using saffron petals as a natural dy...

Journal: :Genetics and molecular research : GMR 2015
D Hassani H L Liu Y N Chen Z B Wan Q Zhuge S X Li

Variegated plants are highly valuable in the floricultural market, yet the genetic mechanism underlying this attractive phenomenon has not been completely elucidated. In this study, we identified and measured different compounds in pink and white flower petals of peach (Prunus persica) by high-performance liquid chromatography and liquid chromatography/mass spectrometry analyses. No cyanidin-ba...

2011
Cynthia A. Dick Jason Buenrostro Timothy Butler Matthew L. Carlson Daniel J. Kliebenstein Justen B. Whittall

Intra- and interspecific variation in flower color is a hallmark of angiosperm diversity. The evolutionary forces underlying the variety of flower colors can be nearly as diverse as the colors themselves. In addition to pollinator preferences, non-pollinator agents of selection can have a major influence on the evolution of flower color polymorphisms, especially when the pigments in question ar...

Journal: :Plant physiology 2006
Akemi Ohmiya Sanae Kishimoto Ryutaro Aida Satoshi Yoshioka Katsuhiko Sumitomo

The white petals of chrysanthemum (Chrysanthemum morifolium Ramat.) are believed to contain a factor that inhibits the accumulation of carotenoids. To find this factor, we performed polymerase chain reaction-Select subtraction screening and obtained a clone expressed differentially in white and yellow petals. The deduced amino acid sequence of the protein (designated CmCCD4a) encoded by the clo...

2014
Akemi Ohmiya Masumi Hirashima Masafumi Yagi Koji Tanase Chihiro Yamamizo

Plants have an ability to prevent chlorophyll accumulation, which would mask the bright flower color, in their petals. In contrast, leaves contain substantial amounts of chlorophyll, as it is essential for photosynthesis. The mechanisms of organ-specific chlorophyll accumulation are unknown. To identify factors that determine the chlorophyll content in petals, we compared the expression of gene...

Journal: :Frontiers in plant science 2016
Inés Casimiro-Soriguer Eduardo Narbona M. L. Buide José C. del Valle Justen B. Whittall

Flower color polymorphisms are widely used as model traits from genetics to ecology, yet determining the biochemical and molecular basis can be challenging. Anthocyanin-based flower color variations can be caused by at least 12 structural and three regulatory genes in the anthocyanin biosynthetic pathway (ABP). We use mRNA-Seq to simultaneously sequence and estimate expression of these candidat...

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