منتدى استراحات زايد

منتدى استراحات زايد (http://vb.ma7room.com/index.php)
-   الطلاب والتعليم والجامعات (http://vb.ma7room.com/forumdisplay.php?f=29)
-   -   ياخوان شما طالب منكم العون .. ساعدوني (http://vb.ma7room.com/showthread.php?t=356717)

راعي عديم 03-15-2010 03:32 PM

ياخوان شما طالب منكم العون .. ساعدوني
 
مرحبا السااااااااااااااع


وشحالكم ؟؟
عاسكم بخير وسهاله

الله حيه

والعلووووووووم يالربع

عاد أنا اليوم طالبنكم في حاية وإن شاء الله ماتردوني

أبقي تلخيص لها الموضوع
موضوع أنجليزي وبما أني ما اعرف أنجليزي
أطلب المعونه منكم أنكم تلخصونها ألي لأن عندي شرح الاسبوع الياي
ولي عنده معلومات عن زهرة الروز بالإنجليزي وشوية تكون لشرح حطوها

وهذا الموضوع >> عاد ساعدوني لأني عضو يديد من الوكاله أمره ..

Rose Flower
A Rose is a flowering shrub of the genus Rosa, and the flower of this shrub. There are more than a hundred species of wild roses, all from the northern hemisphere and mostly from temperate regions. The species form a group of generally prickly shrubs or climbers, and sometimes trailing plants, reaching 2-5 m tall, rarely reaching as high as 20 m by climbing over other plants.

The leaves of most species are 5-15 cm long, pinnate, with leaflets and basal stipules; the leaflets usually have a serrated margin, and often a few small prickles on the underside of the stem. The vast majority of roses are deciduous, but a few (particularly in southeast Asia) are evergreen or nearly so. The flowers of most species roses have five petals, with the exception of Rosa sericea, which often has only four. Each petal is divided into two distinct lobes and are usually white or pink, though in a few species yellow or red. Beneath the petals are five sepals (or in the case of some Rosa sericea, four). These may be long enough to be visible when viewed from above and appear as green points alternating with the rounded petals. The ovary is inferior, developing below the petals and sepals.

The aggregate fruit of the rose is a berry-like structure called a rose hip. Rose species that produce open-faced flowers are attractive to pollinating bees and other insects, thus more apt to produce hips. Many of the domestic cultivars are so tightly petalled that they do not provide access for pollination. The hips of most species are red, but a few (e.g. Rosa pimpinellifolia) have dark purple to black hips. Each hip comprises an outer fleshy layer, the hypanthium, which contains 5-160 "seeds" (technically dry single-seeded fruits called achenes) embedded in a matrix of fine, but stiff, hairs. Rose hips of some species, especially the Dog Rose (Rosa canina) and Rugosa Rose (Rosa rugosa), are very rich in vitamin C, among the richest sources of any plant. The hips are eaten by fruit-eating birds such as thrushes and waxwings, which then disperse the seeds in their droppings. Some birds, particularly finches, also eat the seeds. While the sharp objects along a rose stem are commonly called "thorns", they are actually prickles outgrowths of the epidermis (the outer layer of tissue of the stem). True thorns, as produced by e.g. Citrus or Pyracantha, are modified stems, which always originate at a node and which have nodes and internodes along the length of the thorn itself. Rose prickles are typically sickle-shaped hooks, which aid the rose in hanging onto other vegetation when growing over it. Some species such as Rosa rugosa and R. pimpinellifolia have densely packed straight spines, probably an adaptation to reduce browsing by animals, but also possibly an adaptation to trap wind-blown sand and so reduce erosion and protect their roots (both of these species grow naturally on coastal sand dunes). Despite the presence of prickles, roses are frequently browsed by deer. A few species of roses only have vestigial prickles that have no points.

Roses are one of the most popular garden shrubs, as well as the most popular and commonly-sold florists' flowers. In addition to their great economic importance as a florists' crop, roses are also of great value to the perfume industry. Many thousands of rose hybrids and cultivars have been bred and selected for garden use, mostly double-flowered with many or all of the stamens mutated into additional petals. Twentieth-century rose breeders generally emphasized size and color, producing large, attractive blooms with little or no scent. Many wild and "old-fashioned" roses, by contrast, have a strong sweet scent. Roses thrive in temperate climates, though certain species and cultivars can flourish in sub-tropical and even tropical climates, especially when grafted onto appropriate rootstock. There is no single system of classification for garden roses.

Rose pruning, sometimes regarded as horticultural art form, is largely dependant on the type of rose to be pruned, the reason for pruning, and the time of year it is at the time of the desired pruning. Most Old Garden Roses of strict European heritage (albas, damasks, gallicas, etc.) are shrubs that bloom once yearly, in late spring or early summer, on two-year-old (or older) canes. As such, their pruning requirements are quite minimal, and are overall similar to any other analogous shrub, such as lilac or forsythia. Generally, only old, spindly canes should be pruned away, to make room for new canes. One-year-old canes should never be pruned because doing so will remove next year's flower buds. The shrubs can also be pruned back lightly, immediately after the blooms fade, to reduce the overall height or width of the plant. In general, pruning requirements for OGRs are much less laborious and regimented than for Modern hybrids. Modern hybrids, including the hybrid teas, floribundas, grandifloras, modern miniatures, and English roses, have a complex genetic background that almost always includes China roses (R. chinensis). China roses were evergrowing, everblooming roses from humid subtropical regions that bloomed constantly on any new vegetative growth produced during the growing season. Their modern hybrid descendants exhibit similar habits: Unlike Old Garden Roses, modern hybrids bloom continuously (until stopped by frost) on any new canes produced during the growing season. They therefore require pruning away of any spent flowering stem, in order to divert the plant's energy into producing new growth and thence new flowers. Additionally, Modern Hybrids planted in cold-winter climates will almost universally require a "hard" annual pruning (reducing all canes to 8"-12" in height) in early spring. Again, because of their complex China rose background, Modern Hybrids are typically not as cold-hardy as European OGRs, and low winter temperatures often desiccate or kill exposed canes. In spring, if left unpruned, these damanged canes will often die back all the way to the shrub's root zone, resulting in a weakened, disfigured plant. The annual "hard" pruning of hybrid teas, floribundas, etc. should generally be done in early spring; most gardeneres coincide this pruning with the blooming of forsythia shrubs. Canes should be cut about 1/2" above a vegetative bud (identifiable as a point on a cane where a leaf once grew). For both Old Garden Roses and Modern Hybrids, any weak, damaged or diseased growth should be pruned away completely, regardless of the time of year. Any pruning of any rose should also be done so that the cut is made at a 45-degree angle above a vegetative bud. This helps the pruned stem callus-over more quickly, and also mitigates moisture buildup over the cut, which can lead to disease problems. For all general rose pruning (including cutting flowers for arrangements), sharp secateurs (hand-held, sickle-bladed pruners) should be used to cut any growth 1/2" or less in diameter. For canes of a thickness greater than 1/2", pole loppers or a small handsaw are generally more effective; secateurs may be damaged or broken in such instances.

Deadheading is the simple practice of manually removing any spent, faded, withered or discolored flowers from rose shrubs over the course of the blooming season. In Modern Hybrid roses, this is done for several reasons: To promote rebloom, to keep shrubs looking tidy, to eliminate stem dieback (see Pruning, above) and to eliminate excess debris accumulation in the garden. Deadheading is less necessary with Old Garden Roses, as it will not promote rebloom in any once-blooming varieties, but can still be done after the flowers fade for aesthetic purposes.

The rose has always been valued for its beauty and has a long history of symbolism. The ancient Greeks and Romans identified the rose with their goddesses of love referred to as Aphrodite and Venus. In Rome a wild rose would be placed on the door of a room where secret or confidential matters were discussed. The phrase sub rosa, or "under the rose", means to keep a secret — derived from this ancient Roman practice. Early Christians identified the five petals of the rose with the five wounds of Christ. Despite this interpretation, their leaders were hesitant to adopt it because of its association with Roman excesses and pagan ritual. The red rose was eventually adopted as a symbol of the blood of the Christian martyrs. Roses also later came to be associated with the Virgin Mary. Rose culture came into its own in Europe in the 1800s with the introduction of perpetual blooming roses from China. There are currently thousands of varieties of roses developed for bloom shape, size, fragrance and even for lack of prickles.

Roses are ancient symbols of love and beauty. The rose was sacred to a number of goddesses (including Isis and Aphrodite), and is often used as a symbol of the Virgin Mary. Roses are so important that the word means pink or red in a variety of languages (such as Romance languages, Greek, and Polish). The rose is the national flower of England and the United States, as well as being the symbol of England Rugby, and of the Rugby Football Union. It is also the provincial flower of Yorkshire and Lancashire in England (the white rose and red rose respectively) and of Alberta (the wild rose), and the state flower of four US states: Iowa and North Dakota (R. arkansana), Georgia (R. laevigata), and New York (Rosa generally). Portland, Oregon counts "City of Roses" among its nicknames, and holds an annual Rose Festival. Roses are occasionally the basis of design for rose windows, such windows comprising five or ten segments (the five petals and five sepals of a rose) or multiples thereof; however most Gothic rose windows are much more elaborate and were probably based originally on the wheel and other symbolism. A red rose (often held in a hand) is also a symbol of socialism or social democracy; it is also used as a symbol by the British and Irish Labour Parties, as well as by the French, Spanish (Spanish Socialist Workers' Party), Portuguese, Norwegian, Danish, Swedish, Finnish, Brazilian, Dutch (Partij van de Arbeid) and European socialist parties. This originates from the red rose used as a badge by the marchers in the May 1968 street protests in Paris. White Rose was a World War II non-violent resistance group in Germany.

According to the Victorian "language of flowers", different colored roses each have their own symbolic meaning:


Yellow rose: Dying love. Red rose: Deepest love and respect. Pink rose: Grace. White rose: Innocence. Red: love Pink: grace, gentle feelings of love Dark Pink: gratitude Light Pink: admiration, sympathy White: innocence, purity, secrecy, friendship, reverence and humility. Yellow: Yellow roses generally mean dying love or platonic love. In German-speaking countries, however, they can mean jealousy and infidelity. Yellow with red tips: Friendship, falling in love Orange: passion Burgundy: beauty Blue: mystery Further information: blue rose Green: calm Black: slavish devotion (as a true black rose is impossible to produce) Purple: protection (paternal/maternal love) The rose also has various supernatural and literary attributes.

Roses are often portrayed by artists. The French artist Pierre-Joseph Redouté produced some of the most detailed paintings of roses. Henri Fantin-Latour was also a prolific painter of still life, particularly flowers including roses. The Rose 'Fantin-Latour' was named after the artist. Other impressionists including Claude Monet and Paul Cézanne have paintings of roses among their works.

Rose perfumes are made from attar of roses or rose oil, which is a mixture of volatile essential oils obtained by steam-distilling the crushed petals of roses. The technique originated in Persia (the word Rose itself is from Persian) then spread through Arabia and India, but nowadays about 70% to 80% of production is in the Rose Valley near Kazanluk in Bulgaria, with some production in Qamsar in Iran and Germany. The Kaaba in Mecca is annually washed by the Iranian rose water from Qamsar. In Bulgaria, Iran and Germany, damask roses (Rosa damascena 'Trigintipetala') are used. In the French rose oil industry Rosa centifolia is used. The oil, pale yellow or yellow-grey in color, is sometimes called 'Rose Absolute' oil to distinguish it from diluted versions. The weight of oil extracted is about one three-thousandth to one six-thousandth of the weight of the flowers; for example, about 2,000 flowers are required to produce one gram of oil.

Rose hips are sometimes eaten, mainly for their vitamin C content. They are usually pressed and filtered to make rose-hip syrup, as the fine hairs surrounding the seeds are unpleasant to eat (resembling itching powder). They can also be used to make herbal tea, jam, jelly and marmalade


ويزاكم الف خير ..

فداعة الله


الساعة الآن 11:54 PM

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.5.2 TranZ By Almuhajir


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227