scholarly journals Morphological characterization of fruit, seeds and seedlings of white-seal (Chrysophyllum rufum Mart. -Sapotaceae)

2017 ◽  
Vol 17 (4) ◽  
Author(s):  
Liliane Ferreira Lima ◽  
Renata Gabriela Vila Nova de Lima ◽  
Angélica Cândida Ferreira ◽  
Eduardo Bezerra de Almeida Jr. ◽  
Carmen Silvia Zickel
Keyword(s):  
Early Development ◽  
Atlantic Forest ◽  
Morphological Characterization ◽  
Morphological Data ◽  
Leaf Margin ◽  
Adult Individual ◽  
Different Characteristics ◽  
Plastic Trays

Abstract Chrysophyllum is the second largest genus of Sapotaceae, with 81 species distributed in the neotropics. Little data are found in the literature regarding the morphology of seedlings and the early development of this genus. This study aims to morphologically characterize the fruit, seeds and seedlings of Chrysophyllum rufum Mart. Fruits were collected from individuals present in two fragments of the Atlantic Forest, Pernambuco. A sample of 100 seeds and 100 fruits was randomly selected to obtain the morphological data. The seeds were sown in plastic trays in a greenhouse. The fruits are bacoid, obovoid and globose with one or two functional seeds per fruit. The seeds are obovate, with the shape of the hilum ranging from elliptical transverse to oblong transverse. The embryo is cotyledonar, with a spatulated form. The cotyledons are foliaceous and whitish-translucent. The endosperm is abundant and whitish. Germination is epigeal, phanerocotylar and unipolar. The seedling has different characteristics than those of the adult individual, such as the shape and leaf consistency, type of leaf margin, type of venation variation, number of pairs of secondary veins, trichome coloring and abundance of latex.

A taxonomic monograph of Myrcia sect. Sympodiomyrcia (Myrteae, Myrtaceae)

Phytotaxa ◽  
2018 ◽  
Vol 380 (1) ◽  
pp. 1 ◽  
Author(s):  
MATHEUS F. SANTOS ◽  
EVE LUCAS ◽  
PAULO T. SANO
Keyword(s):  
Atlantic Forest ◽  
Conservation Status ◽  
Morphological Characterization ◽  
Identification Key ◽  
Guiana Shield ◽  
Taxonomic Treatment ◽  
Taxonomic History ◽  
Central Eastern ◽  
Morphological Differences

Myrcia contains nearly 800 species and is divided into nine sections, one of them, Myrcia sect. Sympodiomyrcia, has recently been recognized and formally described. This study presents a taxonomic monograph of the group and revises its literature and taxonomic history. Myrcia sect. Sympodiomyrcia is mainly characterized by the presence of cataphylls at the base of internodes, sympodial branching at the base of inflorescences and free and deciduous calyx lobes. Myrcia sect. Sympodiomyrcia is distributed between the Guiana Shield and the central-eastern portion of Brazil (Atlantic Forest and Cerrado Domains). Morphological characterization of organs and structures is provided, as well as distribution statements, morphological differences with other sections of Myrcia and an identification key. A full taxonomic treatment as well as conservation status and images of representative specimens of each species are provided. Twenty one species are here accepted in Myrcia sect. Sympodiomyrcia: Myrcia ascendens, M. attenuata, M. bicarinata, M. bicolor, M. cataphyllata, M. costeira, M. densa, M. foveolata, M. insigniflora, M. lenheirensis, M. mucugensis, M. mutabilis, M. nitida, M. plusiantha, M. rupestris, M. subavenia, M. subcordata, M. subterminalis, M. summa, M. tenuifolia and M. truncata.

scholarly journals Morphological characterization of fruits, seeds and seedlings of araticum plant (Annona crassiflora Mart - Annonaceae)

2013 ◽  
Vol 35 (4) ◽  
pp. 524-531 ◽  
Author(s):  
Alex Caetano Pimenta ◽  
Suelen Santos Rego ◽  
Katia Christina Zuffellato-Ribas ◽  
Antônio Carlos Nogueira ◽  
Henrique Soares Koehler
Keyword(s):  
Fruit Production ◽  
Morphological Characterization ◽  
Morphological Data ◽  
Fleshy Fruit ◽  
Ecological Importance ◽  
Annona Crassiflora ◽  
Brown Color

Araticum (Annona crassiflora Mart. - Annonaceae) is a species with great ecological importance and potential for fruit production. Its fruits, seeds and seedlings were morphologically described in this article as being the main objective of this study. To describe and illustrate the examples, 100 seeds and 42 fruits were analyzed; the latter being collected in Santo Antônio do Leverger - MT - Brazil, in 2011. To describe the morphology of the seedling, 100 seeds were germinated in two different environments. The araticum plant has a compound, multiple strobiliform, globose-subglobose and fleshy fruit, with average measures of 12.9 cm length, 13.5 cm width, 12.7 cm thickness, weight of 1,187.0 g and 99.2 seeds per fruit. The seeds are obovoid, hairless, smooth with a bony aspect and a pale brown color; they have an average of 17. 7 mm length, 10.8 mm width and 8.3 thickness. Epigeous and phanerocotylar germination begins about 148 days after sowing. All morphological data of araticum fruits, seeds and seedlings can be used to recognize the botanical family and, when associated to other features, to recognize the species in the field.

scholarly journals Identification and Characterization of Pestalotioid Fungi Causing Leaf Spots on Mango in Southern China

Plant Disease ◽  
2020 ◽  
Vol 104 (4) ◽  
pp. 1207-1213 ◽  
Author(s):  
Juan Shu ◽  
Zhihe Yu ◽  
Wenxiu Sun ◽  
Jiang Zhao ◽  
Qili Li ◽  
...  
Keyword(s):  
Southern China ◽  
Elongation Factor ◽  
Morphological Characterization ◽  
Morphological Data ◽  
Pathogenicity Test ◽  
Species Identity ◽  
Translation Elongation ◽  
Leaf Spots ◽  
Mango Leaves

Mango is an economically important fruit crop in southern China. However, leaf spots restrict the development of mango trees, reducing the yield and production. Pestalotioid fungi are one of the major agents causing leaf spots on mango. During 2016 and 2017, 21 isolates of pestalotioid fungi associated with leaf spots on mango leaves were collected from five provinces in southern China: Guangxi, Hainan, Yunnan, Guangdong, and Fujian. All 21 isolates were subjected to morphological characterization and DNA sequence analysis. The morphological data were combined with analyses of concatenated sequences of the ITS (internal transcribed spacer), TEF 1-α (translation elongation factor), and TUB2 (β-tubulin) for higher resolution of the species identity of these isolates. The results showed that these isolates belong to Neopestalotiopsis clavispora, Pestalotiopsis adusta, P. anacardiacearum, P. asiatica, P. photinicola, P. saprophyta, P. trachicarpicola, and Pseudopestalotiopsis ampullacea. Pathogenicity test results showed that all these species could cause symptoms. On detached mango leaves (cv. Tainong), early foliar symptoms on leaves were small yellow-to-brown lesions. Later, these spots expanded with uneven borders, turned white to gray, and coalesced to form larger gray patches. To our knowledge, this is the first description of N. clavispora, P. adusta, P. asiatica, P. photinicola, P. saprophyta, P. trachicarpicola, or Ps. ampullacea as causal agents for leaf spots on mango worldwide.

scholarly journals Morphological Characterization of Cephaleuros virescens Occurring in Mango Trees

2019 ◽  
Vol 11 (11) ◽  
pp. 156
Author(s):  
Camila Vilela Vasconcelos ◽  
Paulo Henrique Pereira Costa Muniz ◽  
Elizabeth Amélia Alves Duarte ◽  
Thiago Alves Santos de Oliveira ◽  
Wanderson Silva dos Santos ◽  
...  
Keyword(s):  
Dna Sequencing ◽  
Morphological Characterization ◽  
Causal Agent ◽  
Morphological Data ◽  
Reproductive Structures ◽  
Mango Leaves ◽  
Microscope Slides

The objective of this work was to accomplish the micromorphological characterization of the causal agent of the algal spot in ‘Amrapali’ mango trees. Therefore, ‘Amrapali’ mango leaves exhibiting symptoms of algal spots were used for making microscope slides, on which the pathogen somatic and reproductive structures were measured. The dimensions obtained for sporangiophores and sporangia were 245.5-545.6 × 10.5-19.1 μm and 21.4-34.2 × 16.3-24.7 μm, respectively. Descriptions based on symptoms and micromorphology indicated that the algae are Cephaleuros virescens, since this morphological data corroborates with literature descriptions. Besides, the algae had already identified by DNA sequencing as C. virescens.

scholarly journals Kekerabatan Plasma Nutfah Tebu Berdasarkan Karakter Morfologi

2019 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Ruly Hamida ◽  
Parnidi Parnidi
Keyword(s):  
Genetic Relationship ◽  
Clustering Analysis ◽  
Saccharum Officinarum ◽  
Morphological Characters ◽  
Morphological Characterization ◽  
Morphological Data ◽  
Linkage Method ◽  
Sugarcane Germplasm ◽  
Relationship Of

<p>Karakterisasi morfologi tanaman tebu (<em>Saccharum officinarum)</em> sangat diperlukan sebagai pendukung perakitan varietas unggul melalui identifikasi sumber plasma nutfah yang ada. Tujuan dari penelitian ini adalah untuk memanfaatkan peluang data morfologi deskriptif, untuk menduga jarak dan hubungan kekerabatan genetik antar aksesi. Analisis <em>clustering </em>dilakukan menggunakan program Minitab 15, berdasar metode <em>complete lingkage</em> atau berdasarkan jarak terbesar dari 105 aksesi tebu. Hasil analisis menghasilkan 8 komponen utama dengan proporsi keragaman 75,4%. Selanjutnya analisis <em>clustering</em> pada 105 aksesi plasma nutfah tebu terbagi menjadi 15 kelompok pada derajat kemiripan 60%. Karakter bentuk telinga daun berkontribusi paling besar terhadap keragaman total.</p><p> </p><p><strong>Genetic Relationship of Sugarcane Germplasm from Study on Morphological Characters</strong><br /><br />Morphological characterization of sugarcane (Saccharum officinarum) is required to support superior variety improvement by identification of germplasm resources. The purpose of this research was to know the diversity and genetic relationship of sugarcane germplasm from exploration in Java, based on morphological data as a contribution in the plant breeding process. The clustering analysis was done on Minitab 15 software by the complete linkage method or the greatest distance for 105 sugarcane accessions. The results showed there have 8 major components with the 75.4% of diversity proportion. While, clustering analysis for 105 sugarcane accession was divided into 15 groups with 60% degree of similarity. Shape of auricle had significant contribution to the total diversity of sugarcane. <br />Keywords: Saccharum officinarum, germplasm, morphology, genetic relationship</p>

scholarly journals Characterization methods and fingerprinting of agronomical important crop species

Genetika ◽  
2006 ◽  
Vol 38 (2) ◽  
pp. 83-96 ◽  
Author(s):  
Vladislava Galovic ◽  
Snezana Mladenovic-Drinic ◽  
Julijana Navalusic ◽  
Marija Zlokolica
Keyword(s):  
Molecular Characterization ◽  
Morphological Characterization ◽  
Morphological Data ◽  
Crop Species ◽  
Characterization Methods ◽  
Dus Testing ◽  
Molecular Aspects ◽  
Genetic Profiles ◽  
Plant Breeders Rights

Continued usage of morphological data to describe agronomical important genotypes indicates that those data retain popularity as descriptors of plant species. However, the need is arising for their more detailed description by laboratory-based biochemical and molecular methods. The standardization of those techniques has been achieved by ISTA and UPOV through DUS testing that is the basis of the system of protection of Plant Breeders Rights. Not only by morphological characterization but also by combining morphological, biochemical and molecular aspects in identification and description of agronomical important genotypes, it is possible to reveal their unique genetic profiles e.g. fingerprints. In this review we summarized the techniques that proved to be successfully applied in biochemical and molecular characterization of agronomical important genotypes. Obtaining their unique genetic profiles due to application of those methods, it is now possible to precisely characterize them with most certainty and reproducibility.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

Morphological Characterization of Rhinacanthus Species of Sri Lanka

Planta Medica ◽  
2010 ◽  
Vol 76 (05) ◽  
Author(s):  
APPR Amarasinghe ◽  
RP Karunagoda ◽  
DSA Wijesundara
Keyword(s):  
Sri Lanka ◽  
Morphological Characterization

Density and morphological characterization of bacteria in integrated and exclusive production systems

2020 ◽  
Vol 13 (11) ◽  
pp. 1
Author(s):  
A. R. B. Zanco ◽  
A. Ferreira ◽  
G. C. M. Berber ◽  
E. N. Gonzaga ◽  
D. C. C. Sabino
Keyword(s):  
Bacterial Community ◽  
Rainy Season ◽  
Production Systems ◽  
Cropping System ◽  
Morphological Characterization ◽  
Native Forest ◽  
Exclusive Production ◽  
Colony Forming Units

The different integrated production systems can directly interfere with its bacterial community. The present study aimed to assess density, bacterial diversity and the influence of dry and rainy season in different integrated and an exclusive production system. The fallow and a native forest area was assessed to. Samples were collected in 2012 March and September. The isolation were carried out into Petri dishes containing DYGS medium. The number of colony forming units (CFU) was counted after 48 hours and. The bacterial density ranged between 106 and 107 CFU g-1 soil. The crop system affected the dynamics of the bacterial community only in the rainy season. The rainy season showed greater density of total bacteria when compared to the dry period regardless of the cropping system. The dendrograms with 80 % similarity showed thirteen and fourteen groups in the rainy and dry seasons. Isolates with the capacity to solubilize phosphate in vitro were obtained from all areas in the two seasons, but this feature has been prevalent in bacteria isolated during the rainy season

Sign in / Sign up

Export Citation Format

Share Document