Morphological and morphometrical pollen analysis of corchorus. Malvaceae floral and fruit anatomy pollen grain morphology. Skvarla introduction the centrospermae caryophyllales represents one of the most controversial orders in the angio sperms. Pollen morphology is one of the most significant tool for the taxonomic study as well as systematics of plant taxa. Sep 01, 2009 pollen grains of more than 120 species from c. Pollen grain morphology is not exclusively responsible for.
Here investigated plants were taken from malvaceae, sterculiaceae and tiliaceae families. Pdf pollen morphology and harmomegathic characters of. In some pollen grains, there is a separation of the layers of the exine in the apertural region plate i, 1, forming a fastigium. Pollen morphological description of some plants pollen grains. Jul 05, 2017 monad single and unfused pollen grain examples majority of angiosperms nypa fruticans, arecaceaehibiscus trionum, malvaceae 20. Pollen bank as pollen in the living collections of bogor botanic gardens is needed to germplasm conservation of endangered plants in indonesia. Pollen morphology of selected species of the subfamily. Phylogenetic analysis of the genus hampea 1997 pdf hibisceae. Pollen morphological studies of ten tree species in calabar. Pollen morphology is one of the most important and fundamental branches of palynology. Pdf pollen morphology of 14 species of abutilon and. Palynological studies on some medicinal mallows from. The purpose of this study was observed at the diversity of pollen morphology at the bogor botanic gardens and its. Similar studies include those of 10, 11 and 12 aside.
The studied taxa belong to 9 genera and three different tribes. Pollen morphology and its relationship to taxonomy of the. It is not possible to describe pollen morphology of many of these plants in this volume. Pollen morphological description of some plants pollen. Malvales is the most important order of subclass polypetalae. Review of palaeobotany and palynology elsevier publishing company, amsterdam printed in the netherlands pollen morphology of the family bombacaceae h, p. Present paper deals with the pollen diversity of some plant species of order malvales, which belongs to subclass polypetalae of class dicotyledon. Pollen morphology of malvaceae and its taxonomic significance. A pollen morphology of certain tropical angiospermous plants tropical angiospermous flora of india, very rich in families, genera and species is highly. Department of botany, obafemi awolowo university, ileife, osun state, postal codea234, nigeria. Palynotaxonomic study of some members of malvaceae in. 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 of some species in the family solanaceae adedeji, o. Pollen morphology of egyptian malvaceae pollen genus.
Feb 22, 2020 pollen morphology is one of the most important and fundamental branches of palynology. It will not be an exaggeration if pollen morphology is referred to as the mother of palynological studies. Hutchinson placed the single family under malvales. Bees collect pollen as a protein source that is crucial for egg maturation 1 and larval development 2,3,4. There are also some genera containing familiar ornamentals, such as alcea hollyhock, malva mallow and lavatera tree mallow, as well as tilia lime tree. Pollen morphology of selected species of the subfamily bombacoideae malvaceae sensu lato 1. The pollen morphology of 20 species of malvaceae growing in yemen was investigated by light lm and scanning electron microscope sem.
Fuchs koninklijkeshell exploration and production laboratory, rijswijk the netherlands received august 28, 1966 summary the justification for separating the family bombacaceae from the ster culiaceae, malvaceae and. Jul 27, 2019 the objective of this study was to determine the ideal method for in vitro germinability of theobroma cacao l. Two distinct pollen types were recognized based on polarity, shape, diameter and spine index of the pollen grains. Microsporogenesis and microgametogenesis of excentrodendron. 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. Morphological characteristics of pollen grains have been categorised into different groups. Although molecular studies have also revealed a close relationship of pterospermum with dombeyeae, this genus is isolated in malvaceae s. Pollen morphology of some species in the family solanaceae. Pollen grains of this family are unique being porate and echinate having isolated spines. The study investigates the significance of pollen morphology in the. In pollen grains with more than three apertures, the apertures are arranged in a sinuous line in equatorial view plate i, 6.
Spine morphology on pollen surface of the studied taxa of malvaceae 1 malva aegyptia x 3500 2alcea rosea x 2000 3 hibiscus sabdariffa x 2000 4hibiscus micranthus x 3500 5 malvaviscus arboreus x 2000 6alcea rosea x 3500. Morphology, viability, and longevity of pollen of national. Representatives occur in all except the coldest parts of the world but are most numerous in the tropics. Introduction angiosperm pollen grains are unusual vegetative cells that contain sperm cells, cell walls and plasma membranes. It is not a part of the apg, apg ii and apg iii classifications, being sunk in malvaceae but has an extensive historical record of use. Pollen unit monad research study in pollen morphology conducted in dlsudasma documentation and identification of pollen found at dlsudasma bognot, et. Although many bees are efficient pollinators of a broad range of plant species, only a.
Pollen morphology influenced the process of plants evolution. Mar 18, 2019 bees collect pollen as a protein source that is crucial for egg maturation 1 and larval development 2,3,4. 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. Pollen, tapetum and orbicule development in modiolastrum. Pollen grains of this family are unique being porate and. I based on the masters dissertation of the first author. The pollen grains are spiny, usually spheroidal and an evolutionary trend from a medium sized, ancestral 3zonocolporate pollen type with small spines to a large polytreme type with long, sometimes distinctly dimorphic spines is recognised. Thus, pollen size alone is not a disqualifier for pollen collectability, nor is the echinate exine structure as shown by the collectability of spiny c. Bogor botanic gardens has many living collections in terms of pollen diversity.
Journal of medicinal plants research pollen morphology. Pollen morphological studies in the malvaceae pia bro christensen christensen, pia bro. Dec 18, 2009 pollen grains of 22 taxa from alcea l. Wellknown members of economic importance include okra, cotton, cacao and durian. According to bentham and hooker it differs from them in having monothecous anthers, monadelphous condition and presence of involucre or epicalyx. Pollen and microsporangium development of modiolastrum malvifolium has been studied in this work. Malvaceae, or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. There are also some genera containing familiar ornamentals, such as alcea hollyhock, malva mallow and lavatera tree mallow, as well as tilia. Malvaceae pollen, evaluate the initial viability and longevity, and describe its morphology. Pollen morphology pollen grains medicinal plants archive. To test if that structural variation could have taxonomic value, pollen morphology of 16 species of the genera corchorus, heliocarpus, luehea, mollia and triumfetta malvaceae, grewioideae distributed in southern south america was analysed by light and scanning electron microscopy. Pollen morphology of the family bombacaceae sciencedirect. A pollen morphology study from the kelabit highlands of.
Pollen characters with some other morphological characters are discussed in the light of the recent classification of the family in yemen. Malvaceae pollen oblate spheroidal, trizonocolporate. Echinate pollen can be found in several nonrelated orders of plants, and different exine. Pollen morphological studies of ten tree species in calabar as an aid for plant identification egbe, a. Monad single and unfused pollen grain examples majority of angiosperms nypa fruticans, arecaceaehibiscus trionum, malvaceae 20. The first division of pollen mother cell is transverse to form a dyad. It is not a part of the apg, apg ii and apg iii classifications, being sunk in malvaceae but has an extensive historical record of use all through its existence the family has had a very lively history, with various authors taking very different views on what should be part of this family. Transitions between biomes are common and directional in. Fuchs koninklijkeshell exploration and production laboratory, rijswijk the netherlands received august 28, 1966 summary the justification for separating the family bombacaceae from the ster culiaceae, malvaceae and tiliaceae, which. Pollen morphology of some plant species of order malvales. Pollen morphology of the studied taxa of malvaceae 1 abelmoschus esculentus x 500 2hibiscus trionum x 750 3 hibiscus rosasinensis x 750 4 hibiscussp. In order to gather information on the morphological and viability characteristics of pollen in theobroma cacao, flowers were collected at noon. Byttnerioideae, authormuhammad amirul aiman ahmad juhari and noraini talip and che nurul aini che amri and richard chung and w. The objective of this study was to determine the ideal method for in vitro germinability of theobroma cacao l.
Echinate pollen can be found in several nonrelated orders of plants, and different exine structures even occur within some genera. Unfortunately, it is generally difficult to place pollen fossils in relation to recent taxa, due to high homoplasy in malvaceae pollen morphology saba, 2007, making the full integration of fossil and molecular data challenging. They also show variation in symmetry, exine structure and sculpture. Tropical angiospermous flora of india, very rich in families, genera and species is highly diversified. Morphological and morphometrical pollen analysis of. The pollen grains are produced within the anther of the. Pollen morphology, malvaceae, eurypalynous, purba medinipur. Pollen morphology and its relationship to taxonomy of the genus sarracenia sarraceniaceae w. Pollen morphology and pollen spectra are a very useful tool in analyzing environmental fluctuations in the. Pollen morphology of ten woody plant species was carried out using light microscope. Thus, studies on other species of malvaceae are necessary to corroborate the presence of such bodies in other members of the family.
In some pollen grains, there is a separation of the layers of the exine in the apertural region plate i. Proper identification of pollen and spores both of living and fossil plants is a prerequisite for exploiting their applications. Pollen morphology and the degree of pollen variability within the fourteen species belonging to the two genera, abutilon mill. Pollen morphology and the relationship of the plumbaginaceae, polygonaceae, and primulaceae to the order centrospermae joan w. The chemical treatment of the samples followed the protocol used by silveirajunior et al. Similarly the pollen morphology of these plants shows great variation. Journal of medicinal plants research pollen morphology of.
The pollen morphology varies among different plant species. Trees, shrubs or herbs, exceptionally climbers, rarely monoecious or dioecious, usually with tufted or stellate hairs, sometimes also with simple hairs or glands, more rarely lepidote, exceptionally with prickles or spines. However, our results on the number and direction of biome shifts should be robust to uncertainties in phylogenetic. Pollen grains with three and five apertures are more predominant. Pollen morphology analysis through a combination of morphological data, palynology, and molecular samples more would be better. Pollen morphology of 14 species of abutilon and hibiscus of. The upper or lower cell of dyad undergoes a vertical or longitudinal division instead of transverse, yielding either straight or inverted tshaped configuration, e. Pollen morphological studies of ten tree species in. Spine morphology on pollen surface of the studied taxa of malvaceae 1 malva aegyptia x 3500 2 alcea rosea x 2000 3 hibiscus sabdariffa x 2000 4 hibiscus micranthus x 3500 5 malvaviscus arboreus x 2000 6 alcea rosea x 3500. Palynological studies on some medicinal mallows from punjab. Pollen morphology and exine ultrastructure of selected. Pdf pollen morphology and exine ultrastructure of selected. Pollen morphology of 14 species of abutilon and hibiscus. Malvaceaebyttnerioideae from bahia, brazil the tem analysis was carried out at fiocruz using a zeiss em 109 microscope zena, germany.
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