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...

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 ...

Natural flowering in pineapple is precocious, lacks synchronization reproductive phenology and consequently leads to significant losses due fruits being harvested out of schedule. Several factors influencing the flower initiation have been identified, including cultivar, plant size, temperature, nutrients, water stress. To increase synchronization, can be artificially induced by hormones such a...

Decision trees have been widely used in machine learning. However, due to some reasons, data collecting in real world contains a fuzzy and uncertain form. The decision tree should be able to handle such fuzzy data. This paper presents a method to construct fuzzy decision tree. It proposes a fuzzy decision tree induction method in iris flower data set, obtaining the entropy from the distance bet...

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...

Ulcers were introduced in 36 hrs fasted albino rats of either sex by aspirin plus pylorus ligation, aspirin, and ethanol treatment. Each induction model had four groups namely control, test and standard. In each model of ulcer induction, group that was pre dosed with the ethanolic extract of leaves of Sida cordifolia showed a considerable degree of antiulcer activity in comparison to positive c...

the present investigation was conducted to study the effects of type and concentration of auxin and cytokinin on callus induction of three strawberry (kurdistan, parose and camarosa) cultivars. for this purpose, leaf blade, nodal, petiole, receptacle, stamen and flower bud explants were cultured on murashige and skoog (ms) medium at three separate experiments included 2, 4 dichlorophenoxyacetic...

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...

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...

In order to elucidate the correlation of temperature and the effect of gibberellin spray on the development of flower-buds in Cryptomeria japonica cultivar Kumotooshi, experiments were done in controlled environmental condition during 1970-1971. The following points were observed: 1. The male flower-buds were formed maximum in the temperature range of 25°C-30°C and their formation decreased wit...