نتایج جستجو برای: flower

تعداد نتایج: 21369  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1390

abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم پایه 1392

چکیده: اسانس اندام هوایی دو گیاه onosma orientale و capparis spinosa بصورت جدا از هم (گل، برگ، ساقه) با استفاده از دستگاه کلونجر به روش تقطیر با آب استخراج نموده و ترکیبات موجود در اسانس ها شناسایی و مقدار آنها تعیین شده است. ترکیبات اصلی موجود در این دو گیاه شامل موارد زیر است. onosma orientale %stem %leaf %flower compound name n - 14.8 59.15 n-decane 1 23.28 24.51 7.91 alpha-eudesmol 2 ...

Journal: :Annals of botany 2015
Margaret W Thairu Johanne Brunet

BACKGROUND AND AIMS Flower colour varies within and among populations of the Rocky Mountain columbine, Aquilegia coerulea, in conjunction with the abundance of its two major pollinators, hawkmoths and bumble-bees. This study seeks to understand whether the choice of flower colour by these major pollinators can help explain the variation in flower colour observed in A. coerulea populations. ME...

Journal: :Evolution; international journal of organic evolution 2004
Lynda F Delph Janet L Gehring Frank M Frey A Michele Arntz Maureen Levri

Sexual dimorphism is one of the most widespread and recognizable patterns of phenotypic variation in the biotic world. Sexual dimorphism in floral display is striking in the dioecious plant Silene latifolia, with males making many, small flowers compared to females. We investigated this dimorphism via artificial selection on two populations to determine whether genetic variation exists within p...

Journal: :Journal of Zhejiang University. Science 2004
An-Xiang Hong Gang Chen Jun-Li Li Zhe-Ru Chi Dan Zhang

Flower image retrieval is a very important step for computer-aided plant species recognition. In this paper, we propose an efficient segmentation method based on color clustering and domain knowledge to extract flower regions from flower images. For flower retrieval, we use the color histogram of a flower region to characterize the color features of flower and two shape-based features sets, Cen...

2015
Mar Sobral Tania Veiga Paula Domínguez Javier A. Guitián Pablo Guitián José M. Guitián Sergei Volis

Flower color variation among plant populations might reflect adaptation to local conditions such as the interacting animal community. In the northwest Iberian Peninsula, flower color of Gentiana lutea varies longitudinally among populations, ranging from orange to yellow. We explored whether flower color is locally adapted and the role of pollinators and seed predators as agents of selection by...

2016
Diego Andrés Pacheco Leah S Dudley Josefina Cabezas Lohengrin A Cavieres Mary T K Arroyo

The tendency for flower longevity to increase with altitude is believed by many alpine ecologists to play an important role in compensating for low pollination rates at high altitudes due to cold and variable weather conditions. However, current studies documenting an altitudinal increase in flower longevity in the alpine habitat derive principally from studies on open-pollinated flowers where ...

2014
Tsun-Thai Chai Mirohsha Mohan Hean-Chooi Ong Fai-Chu Wong Tunku Abdul Rahman

Purpose: To evaluate the phytochemical profile as well as in vitro antioxidant, iron-chelating, and antiglucosidase activities of Typha domingensis Pers. (Typhaceae) Methods: Total polyphenols, flavonoids, hydroxycinnamic acids, and pro-anthocyanidins in the respective aqueous extracts of male and female flowers, and fruit of T. domingensis were determined by established procedures. Antioxidant...

2012
Huey-Chun Huang Wan-Yu Hsieh Yu-Lin Niu Tsong-Min Chang

BACKGROUND Magnolia grandiflora L. flower is wildly used in Asian as a traditional herbal medication. The purpose of the study was to investigate the antimelanogenic and antioxidant properties of Magnolia grandiflora L. flower extract. In the study, the inhibitory effects of M. grandiflora L. flower extract on mushroom tyrosinase, B16F10 intracellular tyrosinase activity and melanin content wer...

2014
Yuita Arum Sari Nanik Suciati

Flower classification is a useful way for grouping a flower in certain class using specific features. This research propose a new method of flower classification system using combination of color and texture features. The first phase is getting the crown of the flower, which is localized from a flower image by using pillbox filtering and OTSU’s thresholding. In the next phase, color and texture...

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