Tapetum, orbicule, and pollen grain ontogeny in colletia paradoxa and discaria americana were studied with transmission electron microscopy tem. The pollen morphology of the families is significantly useful for characterizing the species. Department of botany, obafemi awolowo university, ileife, osun state, postal codea234, nigeria. Although grasses superficially resemble other plants, most notably the rushes family juncaceae and sedges family cyperaceae, these similarities are far outweighed by the numerous lessconspicuous differences in the structure and arrangement of reproductive parts, pollen development and structure, chromosome structure, and. On the other hand, pollen morphology does not seem to have systematic value at tribal level in rhamnaceae. Leaves alternate, fascicled, clustered, or opposite, simple. From a neodarwinian point of view, this means that i some polymorphism for aperture number must exist and ii there must be some fitness increase associated with increasing the aperture number. Pollen morphology and the relationship of the plumbaginaceae, polygonaceae, and primulaceae to the order centrospermae joan w. Pollen unit monad research study in pollen morphology conducted in dlsudasma documentation and identification of pollen found at dlsudasma bognot, et. Pollen grains have a hard coat that protects the sperm cells during the process of their movement between the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. The study investigates the significance of pollen morphology in the. This is the first report on the presence of orbicules in the family rhamnaceae. Flower development and pollen morphology in cucurbitaceae.
Pollen morphology and its relationship to taxonomy of the. The pollen morphology of eight neouvaria species and three species of the closely related genus. Historical biogeography of two cosmopolitan families of flowering plants. Therefore, this study aimed to investigate and describe the pollen morphology of 10 species belongs to 9 genera and five tribes of. Ziziphus mistol is essentially an obligate outcrosser dependent of animal pollen vectors flowers exhibit complete intrafloral dichogamy that fully prevents autonomous selfpollination.
Leaves simple, petiolate, alternate or opposite, pinnately veined or 35veined, entire to serrate, sometimes much reduced. Pollinatormediated geitonogamy can easily take place at the level of the inflorescence or of the entire plant. Pollen grain pollen is a fine to coarse powder containing micro gametophytes produce male gametes sperm cells. B pollen from watermelon is trizoneporate, isopolar with radial symmetry. Poaceae characteristic morphological features britannica.
Pollen morphology of the genus is noted as follows. The value of pollen morphology in the classification of. Apertural types and tectum types are the most significant pollen characters. Rosaceae 3 rosaceae barbeyaceae dirachmaceae rhamnaceae elaeagnaceae ulmaceae cannabaceae moraceae urticaceae fig. Aug 12, 2016 on the other hand, pollen morphology does not seem to have systematic value at tribal level in rhamnaceae. We studied different species of the tribes rhamneae rhamnoids clade, pomaderreae, colletieae, paliureae ziziphoids clade and the species alphitonia excelsa unknown tribe, ziziphoids clade.
Your use of this pdf, the bioone complete website, and all posted and associated. Plants of the buckthorn family if you find a dicot shrub or small tree with visibly threeparted capsules or berries, then it is likely a member of the buckthorn family. The plant list includes 2,892 scientific plant names of species rank for the family rhamnaceae. Hyde national museum of wales, cardiff received 22 may 1954 with i figure in the text the latin pollen morphological terms and definitions put forward by erdtman 1943. Phylogenetic,lmplications of pollen morphology and. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules. Pollen morphological description of some plants pollen grains.
A laboratory manual, narosa publishing house, new delhi. Localization, morphology, anatomy and ultrastructure of. However, ultrastructural studies on the development of pollen grains in rhamnaceae are rare and restricted to descriptions of the pollen grain wall. Pollen types with different aperture numbers often. Taxonomic importance of pollen morphology for some species. A pollen catapult mechanism is present in the genera molopanthera and posoqueria tribe posoquerieae that projects a spherical pollen mass onto visiting sphingidae. Species of rhamnaceae contained within the plant list belong to 52 plant genera. Pollen morphology of some species in the family solanaceae. View pollen morphology research papers on academia. Pollen biology and morphology of ziziphus jujuba mill. Taxonomic novelties and pollen morphological study in the genus. The rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions. Consistent with the general morphological pattern of the family rhamnaceae, the pollen grains of puliuriis are uniformly isopolar, radially symmetrical.
You can check the plant list for further information. Members of rhamnaceae, or the buckthorn family, are characterized by woodiness, stamens male alternating with sepals opposite petals, when present, a disk of tissue developing under or around the ovary, and joined bases of flower parts that form a cup hypanthium surrounding the ovary. Pollen grains were yellow, manods, spheroidalprolate, isopolar, tricolporate and exine. Pollen grains of 107 species of 61 genera of the gardeniinae were investigated by scanning electron and light microscopy. Pollen and seed morphology of the genus marrubium lamiaceae. The presence or absence of orbicules and their morphology vary within tribes. Pollen morphology of the examined species of marrubium. Pollen and seed morphology of rhinacanthus nees and sol. Morphology of pollen grains 1 polarity the polar axis is the straight line between the distal and proximal poles of a pollen grain or a spore pollen grains can therefore be. It seems that for rhamnaceae, the anatomy of the reproductive sporophytic structures could have more systematic value than the gametophytic structures.
The pollen morphological characters of all species examined are summarized based on observation from light fig. Pdf pollen biology and morphology of ziziphus jujuba mill. The plants of this family are cosmopolitan in distribution. As a result of acetolysis, pollen shape varied considerably. Global pollen project uuid 366da2dd3eff4070be890fde55aafdb9 botanical reference none available. The family contains about 55 genera and 950 species.
Pollen morphology of selected plants from erkwit university of. Rosaceae and 2 its systematic importance 3 4 kacper lechowicz1, dorota wronskapilarek1, jan bocianowski2, tomasz malinski1 5 6 1 department of forest botany, poznan university of life sciences, wojska polskiego 71 d, 60625 poznan, poland 7 2 department of mathematical and statistical methods, faculty of agronomy and. Pollen morphology of melliferous plants for apis mellifera. Pollen morphology and its relationship to taxonomy of the genus sarracenia sarraceniaceae w. Pollen morphology of the studied taxa of malvaceae 1 abelmoschus esculentus x 500 2hibiscus trionum x 750 3 hibiscus rosasinensis x 750 4 hibiscussp. Pollen grains are generally free, radially symmetrical, isopolar, colporate. Over evolutionary time, the morphology of angiosperm pollen has evolved toward an increasing number of apertures, among other things. Rhamnaceae constitute a mediumsized plant family 52 genera and ca. Pdf pollen biology and morphology of ziziphus jujuba. Pollen morphology of the genus paliiiriis rhamnaceae. Devore4 1section of integrative biology and plant resources center, university of texas at austin, austin, texas 78712. Proper identification of pollen and spores both of living and fossil plants is a prerequisite for exploiting their applications. The study investigates the significance of pollen morphology in the systematics of some species in the family solanaceae. Devore4 1section of integrative biology and plant resources center, university of texas at austin, austin, texas 78712 2department of botany and microbiology, university.
Pollen grain morphology of fabaceae in the special. A list of all accepted names in rhamnaceae is available in csv format. Abstract pollen morphology of 11 species representing 5 genera of the family rhamnaceae from pakistan have been examined by light and scanning electron microscope. Pollen morphology is one of the most important and fundamental branches of palynology. Pollen grain shape varies from prolate to oblate ellipsoidal, however most genera have subspherical pollen. The pollen grains are produced within the anther of the. The following pollen morphological descriptions of some mimosoids are accompanied by fig. Literature on pollen morphology of the rhamnaceae is relatively abundant, and descriptions are often given 2, 911. Pollen development and anther morphology in 14 species of. It will not be an exaggeration if pollen morphology is referred to as the mother of palynological studies. Pollen morphology and ultrastructure of selected species of.
Although the presence of scent was described for several species of rhamnaceae, localization, morphology and structure of osmophores were unknown. Each pollen grain consists of the two celled male haploid plant. Dispersed leaves that have rhamnaceaelike morphology but do not fit into the rhamnoid or ziziphoid leaf types are common in the fossil record. Ziziphus comprises important fruit trees that inhabit arid environments of tropical and subtropical regions of the world and are able to adapt to drought and salt stress. Aug 22, 2019 however, pollen illustrations of some tropical angiospermous plants, particularly abundant in the western ghats have been incorporated in this chapter figs. Rhamnaceae or indian jujube family or buckthorn family includes 58 genera and about 900 species. Species of this genus are characterized by synchronous protandrous dichogamy and selfincompatibility. Rhamnaceae gouania phillipsonii buerki plate 9, figures 19. Nesom shrubs, trees, or woody vines, herbs, annual or perennial, evergreen or deciduous, synoecious, dioecious, or polygamous monoecious, sometimes armed with thorns or stipular spines. The ultrastructural changes observed during the different stages of development in the tapetal cells and related to orbicule and pollen grain formation are described. The rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family.
Phylogenetic,lmplications of pollen morphology and ultrastructure in the barnadesioideae asteraceae zaiming zhao1, john j. Hyde national museum of wales, cardiff received 22 may 1954 with i figure in the text the latin pollenmorphological terms and definitions put forward by erdtman 1943. Unfortunately, most of these results were obtained from herbarium specimens. The family contains about,500 species in 611 genera, which makes it the fourthlargest angiosperm family rubiaceae has a cosmopolitan distribution. Pollen morphology of some species in the family solanaceae adedeji, o. The pollen morphology of the genus paliirrus and the 5 species it comprises is described. Pollen grain morphology of fabaceae in the special protection area spa paudefruta, diamantina, minas gerais, brazil cynthia f. The subtribe is europalynous and grains occur either as monads, tetrads or massulae. The foamy, white, greenish or even blue spray of flowers of the ceanothus is also hard to miss, when in season.
Use the link below to share a fulltext version of this article with your friends and colleagues. Pollen, tapetum, and orbicule development in colletia paradoxa and discaria americana rhamnaceae. To fulfil these aims specific objectives were defined. Poaceae poaceae characteristic morphological features. P p p p 1 pscience program, department of communication sciences and disorders, emerson college, boston, ma 02116 2 p harvard forest, harvard university, 324 north main street, petersham, ma 066. Most flowervisitor interactions are unspecialized, but as the floral tube varies in diameter and length across the family medan and schirarend, 2004. The pollen morphology of 20 species of malvaceae growing in yemen was investigated by light. Pollen morphology of polish species from the genus rubus l. A isopolar the proximal and distal faces of the exine are alike b heteropolar the distal and proximal faces of the exine are different, either in shape, ornamentation.
Pollen morphology and ultrastructure of selected species. Rhamnaceae is a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. C autofluorescence of mature zucchini pollen excited with ultraviolet light. Laboratory of biodiversity and apiculture, department of botany, bangalore university, bangalore560056, india abstract pollen taxonomy is the prerequisite to compare the pollen present in honey samples with special reference to. Pollen grain morphology is in accordance with the general morphological pattern of the family rhamnaceae 2, 11, 17, 47. Pollen morphology is one of the significant tools in solving some taxonomic problems on the family, generic or specific level and has become part of the multidisciplinary and collaborative approach in plant systematic and evolution. Consistent with the general morphological pattern of the family rhamnaceae, the pollen grains of puliuriis are. Morphological characteristics of pollen grains have been categorised into different groups.
P p p p 1 pscience program, department of communication sciences and disorders, emerson college, boston, ma 02116 2. Pollen morphology pollen grains medicinal plants archive. Shape of pollen grains are subprolate or oblatespheroidal rarely prolate. Pollen, tapetum, and orbicule development in colletia. Pollen morphology of selected bee forage plants shubharani, r. Pollen morphology of 11 species representing 5 genera of the family rhamnaceae from pakistan have been examined by light and scanning electron microscope. Skvarla introduction the centrospermae caryophyllales represents one of the most controversial orders in the angio sperms.
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