scholarly journals Comparative leaf anatomy of some endemic Crocus L. taxa from Turkey

1970 ◽  
Vol 40 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Nezahat Kandemir

Relationships among 14 Crocus L. taxa such as, C. ancyrensis (Herbert) Maw, C. baytopiorum Mathew, C. biflorus Miller ssp. crewei (Hook.) Mathew, C. biflorus ssp. isauricus (Siehe ex Bowles) Mathew, C. biflorus ssp. nubigena (Herbert) Mathew, C. biflorus ssp. pseudonubigena Mathew, C. cancellatus Herbert ssp. cancellatus, C. cancellatus ssp. damascenus (Herb ert) Mathew, C. cancellatus ssp. lycius Mathew, C. cancellatus ssp. mazziaricus (Herbert) Mathew, C. cancellatus ssp. pamphylicus Mathew, C. pestalozzae Boiss., C. reticulatus Steven ex Adams ssp. hittiticus (T. Baytop & Mathew) Mathew and C. sieheanus Barr ex Burtt collected from different two locations of Turkey have been investigated using 11 anatomic leaves characters. These taxa are endemic (except ssp. damascenus) and rare in Turkey. The anatomical variations in the cross sections of the leaf parts of the taxa were ascertained by statistical methods. It appears that the length and breadth measurements of palisade and spongy parenchyma cells, trachea diameter and cuticle thickness are important leaf anatomical characters that show variation in relation to altitudes. Key words: Crocus; Endemic; Leaf anatomy; Relationships DOI: http://dx.doi.org/10.3329/bjb.v40i2.9771   Bangladesh J. Bot. 40(2): 155-162, 2011 (December)

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 417E-418 ◽  
Author(s):  
Montree Issarakraisila ◽  
Ravie Sethpakdee

Leaf anatomy of young rambutan (Nephelium lappaceum Linn.), durian (Durio zibethinus Murray), mangosteen (Garcinia mangostana Linn.), and longkong (Aglaia dookoo Griff.) potted plants grown under different light intensity (100%, 55%, 40%, or 25% of full sun) were observed. The thickness of both palisade and spongy parenchyma decreased as the light intensity decreased. This resulted in a decrease of lamina thickness when the light was lower. An exception occurred in mangosteen when the thickness of both palisade and spongy parenchyma in leaf grown under full sunlight were lower than in leaves grown under 55% or 40% full sun. The thickness ratio of palisade and spongy tissue in rambutan and durian decreased as light intensity decreased. While the ratios in mangosteen and longkong leaves grown under full sunlight were lower than the ratios of leaves grown under 55% or 40% of full sun. The frequency of stomata also decreased as the light intensity decreased. The thickness of palisade tissue of leaves grown under 55% of full sun in rambutan, durian, mangosteen, and longkong were 70, 110, 110, and 55 μm, respectively. The thickness of spongy tissue of leaves grown under 55% of full sun in rambutan, durian, mangosteen, and longkong were 60, 30, 410, and 145 μm, respectively. The thickness of leaves grown under 55% of full sun in rambutan, durian, mangosteen, and longkong were 186, 230, 565, and 233 μm, respectively. The number of stomata per square millimeter of leaves grown under 55% of full sun in rambutan, durian, mangosteen, and longkong were 437, 221, 133, and 301, respectively. Photosynthesis efficiency and light adaptation were discussed.


1999 ◽  
Vol 34 (8) ◽  
pp. 1361-1365 ◽  
Author(s):  
Adaucto Bellarmino de Pereira-Netto ◽  
Antonio Carlos Gabriele ◽  
Hilton Silveira Pinto

Kudzu is a cover crop that has escaped cultivation in some subtropical and warm temperate regions. Kudzu has previously demonstrated broad intraspecific physiological plasticity while colonizing new environments. The objective of this paper was to investigate characteristics of kudzu leaflet anatomy that might contribute to its successful growth in climatically distinct environments, and to escape cultivation as well. Fresh and fixed leaflet strips of field-grown plants were analyzed. The lower epidermis of kudzu showed a higher frequency of stomata (147 ± 19 stomata mm-2) than the upper epidermis (26 ± 17 stomata mm-2). The average number of trichomes per square milimeter was 8 for both the upper and the lower epidermis. The average trichome length was 410 ± 200 mum for the upper epidermis and 460 ± 190 mum for the lower epidermis. Cuticle thickness was not considerably different between lower and upper epidermis. The leaflet blade consisted basically of two layers (upper and lower) of unicellular epidermis, two layers of palisade parenchyma and one layer of spongy parenchyma. One layer of paraveinal mesophyll was found between palisade and spongy parenchyma. In conclusion, leaflets of kudzu present anatomical characteristics that might contribute to the broad physiological plasticity shown by kudzu.


2003 ◽  
Vol 15 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Maria Luiza Carvalho Carelli ◽  
Rachel Benetti Queiroz-Voltan ◽  
Joel Irineu Fahl ◽  
Paulo César Ocheuze Trivelin

Possible presence of vascular bundle sheath cells and its relation to photosynthetic pathway, leaf anatomy and carbon isotope composition (delta13C) were examined in six species of genus Coffea: C. arabica (cvs. Catuaí Vermelho, Mundo Novo, Bourbon Vermelho and Icatu Amarelo), C. canephora (cvs. Apoatã and Guarini), C. liberica, C. dewevrei, C. salvatrix and C. stenophylla. In all genotypes, the vascular bundle was surrounded by a layer of cells with numerous chloroplasts in a centrifugal position. Visually no differences could be seen between the spongy parenchyma cells and the bundle sheath cells, neither in size nor in chloroplast number. The leaf delta13C values ranged between a maximum of - 26.2 ‰ in C. salvatrix and a minimum of -29.7 ‰ in C. liberica. A strong correlation (r = 0.972, p = 0.001) between delta13C and anatomical characteristics was observed in coffee species. C. salvatrix exhibited the highest delta13C values and the most compact mesophyll, with more palisade and spongy parenchyma cells in contact with the vascular bundle sheath.


2016 ◽  
Vol 34 (3) ◽  
pp. 485-495
Author(s):  
A. ÖZDEMIR ◽  
H. KOCAYIGIT ◽  
K. YETISEN ◽  
Y. AKYOL ◽  
C. ÖZDEMIR

ABSTRACT In the present study, Ornithogalum narbonense, O. montanum, O. wiedemannii, O. sigmoideum and O. lanceolatum species were compared statistically with respect to anatomical characters. Some differences were found in root, stem and leaf anatomy of the species. These differences and similarities were indicated in this study. A big metaxylem was present in all root cross sections, except for O. lanceolatum, which has three metaxylema. 2-3 layered annular type collenchyma were present in all species. Aerenchyma is present in all mesophiles.


1970 ◽  
Vol 38 (2) ◽  
pp. 197-200 ◽  
Author(s):  
Onur Koyuncu ◽  
Ismühan Potoglu Erkara ◽  
Murat Ardiç

Salvia verticillata L. subsp. verticillata has four cornered stem with 5-6 layers of collenchyma cells inside the epidermis. The pith is parenchymatous. In the leaf mesophyll, the palisade and spongy parenchyma cells were of similar shape. The leaf was amphistomatious. The plant was amaryllis mesomorphic and anisocytic type of stomata. The pollen grains were suboblate-subprolate and stephanocolpate. Exine was seen to be tectate-granulate.  


Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 622
Author(s):  
Alexandra Ciorîță ◽  
Septimiu Cassian Tripon ◽  
Ioan Gabriel Mircea ◽  
Dorina Podar ◽  
Lucian Barbu-Tudoran ◽  
...  

Morphological and anatomical traits of the Vinca leaf were examined using microscopy techniques. Outdoor Vinca minor and V. herbacea plants and greenhouse cultivated V. major and V. major var. variegata plants had interspecific variations. All Vinca species leaves are hypostomatic. However, except for V. minor leaf, few stomata were also present on the upper epidermis. V. minor leaf had the highest stomatal index and V. major had the lowest, while the distribution of trichomes on the upper epidermis was species-specific. Differentiated palisade and spongy parenchyma tissues were present in all Vinca species’ leaves. However, V. minor and V. herbacea leaves had a more organized anatomical aspect, compared to V. major and V. major var. variegata leaves. Additionally, as a novelty, the cellular to intercellular space ratio of the Vinca leaf’s mesophyll was revealed herein with the help of computational analysis. Lipid droplets of different sizes and aspects were localized in the spongy parenchyma cells. Ultrastructural characteristics of the cuticle and its epicuticular waxes were described for the first time. Moreover, thick layers of cutin seemed to be characteristic of the outdoor plants only. This could be an adaptation to the unpredictable environmental conditions, but nevertheless, it might influence the chemical composition of plants.


2017 ◽  
Vol 35 (0) ◽  
Author(s):  
H. YILDIRIM ◽  
K. YETISEN ◽  
A. ÖZDEMIR ◽  
C. ÖZDEMIR

ABSTRACT In the present study Scilla luciliae, S. forbesii, S. sardensis, S. siehei, Scilla x allenii and S. bifolia are compared anatomically. Some differences have been found in root, scape, and leaf anatomy of the taxa, and commented. S. luciliae, S. forbesii, S. sardensis and S. siehei have a metaxylem at the center of the root, others have 3-4 number metaxylem. Vascular bundles in two row in S. luciliae and S. forbesii in a single row in S. sardensis, Scilla x allenii and S. bifolia though in three rows in S. siehei. Aerenchyma tissue is present in mesophyll of five taxa leaf except S. sardensis. The anatomical variations in the taxa have been investigated by means of numerical methods (Analysis of variance and Pearson correlation). By the analysis of the investigated taxa from 12 anatomy related characters, it has been also found that the results from numerical analysis of anatomy characters can provide additional evidences, which correspond to the anatomy for the recognition of the taxa.


1970 ◽  
Vol 48 (2) ◽  
pp. 341-359 ◽  
Author(s):  
Lalit M. Srivastava

The origin of sieve elements and parenchyma cells in the secondary phloem of Austrobaileya was studied by use of serial cross sections stained with tannic acid – ferric chloride and lacmoid. In three important respects, Austrobaileya phloem recalls gymnospermous features: it has sieve cells rather than sieve-tube members; a significant proportion of sieve elements and companion cells arise independently of each other; and sieve areas occur between sieve elements and companion cells ontogenetically unrelated to each other. The angiospermous feature includes origin of most sieve elements and parenchyma, including companion cells, after divisions in phloic initials. In these instances companion cells show a closer ontogenetic relationship to sieve elements than do other parenchyma cells. The combination of gymnospermous and angiospermous features makes phloem of Austrobaileya unique when compared to that of all those species that have been investigated in detail. It is further suggested that the term albuminous cells is inappropriate and should be replaced by companion cells but that the ontogenetic relationship implicit in the definition of companion cells is too restrictive and should be abandoned.


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