PACHYTENE MORPHOLOGY OF PRUNUS AVIUM L. CV. LAMBERT

1969 ◽  
Vol 11 (1) ◽  
pp. 125-132 ◽  
Author(s):  
E. D. P. Whelan
Keyword(s):  
Prunus Avium ◽  
Morphological Characteristics ◽  
Interstitial Deletion ◽  
B Chromosomes ◽  
Chromosome 3 ◽  
Group A ◽  
Group B ◽  
Prunus Avium L

Analysis of pachytene chromosomes of Prunus avium L. cv. Lambert revealed that only chromosomes 1, 2 and 3 were sufficiently differentiated to be identifiable. These chromosomes were classified as Group A. Chromosome 3 had a large, interstitial deletion involving most of the short arm of one homologue. The remaining five chromosomes, designated as Group B, were primarily achromatic and could not be separated with certainty by morphological characteristics or arm length ratios.The centromeres of all chromosomes were easy to locate, being delimited on both sides by intensely stained chromatic regions. In the Group B chromosomes no other chromatic regions were evident. Telochromomeres were not detected in any chromosome, though the short arm of the Group A chromosomes terminated in a chromatic knob or satellite.Interpretation of pachynema was difficult as the chromosomes failed to spread. They appeared to be associated with each other in the area of chromatic centers.

scholarly journals Variability of Old Sweet Cherries Found in Slovak Regions and Their Preservation

2017 ◽  
Vol 71 (3) ◽  
pp. 184-189
Author(s):  
Michaela Benková ◽  
Iveta Čičová ◽  
Daniela Benedikova ◽  
Lubomir Mendel ◽  
Miroslav Glasa
Keyword(s):  
Sweet Cherry ◽  
Prunus Avium ◽  
Fruit Size ◽  
Morphological Characteristics ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Sweet Cherries ◽  
Prunus Mahaleb ◽  
Breeding Programmes ◽  
Prunus Avium L

Abstract The work is focused on the evaluation of variability of morphological and pomological characteristics of several old sweet cherries (Prunus avium L.) that were found in different Slovak regions. The experimental work has been performed during two years, 2014 and 2015. The following characteristics according to the descriptor list of subgenus Cerasus were evaluated - period of flowering and ripening, morphological characteristics of the flowers, fruit size, fruit weight, and quality parameters. The results showed high variability of evaluated accessions. From the 13 surveyed localities, the most valuable accessions were found in the locality Hornį Streda - places Čachtice, Krakovany, Nitra, and Brdárka. During the collecting expeditions, 170 accessions of sweet cherry, with fruit of the different quality were found. The most interesting accessions were grafted onto rootstocks with different intensity of growth (Prunus avium L., Prunus mahaleb L., and ‘Gisela5’). Some of the selected cherry accessions can be used for commercial growing after tests, while some of them can be used only for collection of genetic resources and as potential genitors in breeding programmes.

Variability of the Centromeric Index of Group A and Group B Chromosomes in MZ and DZ Twins

1970 ◽  
Vol 19 (1-2) ◽  
pp. 183-183
Author(s):  
L. Gedda ◽  
G. Torrioli-Riggio ◽  
L. Romei ◽  
L. Silvani
Keyword(s):  
Chromosomal Aberrations ◽  
Morphological Variability ◽  
Chromosome Morphology ◽  
B Chromosomes ◽  
Pilot Test ◽  
Centromeric Index ◽  
Routine Work ◽  
Group A ◽  
Group B ◽  
Mz Twins

In the course of routine work in the caryological laboratory at the Mendel Institute, we have often noticed the repetition in families, and especially in MZ twins, of alterations in chromosome morphology that can hardly be included among chromosomal aberrations proper (translocations, deletions, etc.). Since such variations do not generally reflect any pathology in the individuals involved, the occurrence of a normal morphological variability of chromosomes has been postulated.In order to test this hypothesis, we have measured several clearly defined and standardized chromosomal parameters, obtaining the classical structure of the twin test, i.e., the comparison between experimental measures in MZ and DZ twin pairs.The parameter that was selected for the test is the centromeric index of Group A and Group B chromosomes, intended as the ratio of long arm length to short arm length. In order to avoid method and operator influences, a pilot test was carried out, repeating five times the culture from blood of the same individual, and having the slides read by five different operators; thus, the variability due to the method and to the operator was assessed.

scholarly journals KARAKTERISASI MORFOLOGI DAUN DAN BUNGA BEBERAPA VARIETAS Hoya coronaria DARI KAWASAN HUTAN KERANGAS AIR ANYIR, BANGKA

2018 ◽  
Vol 2 (1) ◽  
pp. 1-9
Author(s):  
Putri Deswanti ◽  
Yulian Fakhrurrozi ◽  
Sri Rahayu
Keyword(s):  
Morphological Characteristics ◽  
Flower Color ◽  
Group A ◽  
Yellow Corolla ◽  
Heath Forest ◽  
Group B ◽  
Munsell Color Chart ◽  
Group D ◽  
Descriptive Method

Hoya coronaria was found in Heath Forest Air Anyir, Bangka in various flower color. Characterization based on morphological characteristics need to clear up the differences between varieties. This research aims to observe morphological variation of six varieties of H. coronaria from Heath Forest Air Anyir, Bangka based on morphology vegetative and flower morphology. The descriptive method was used to describe the morphological character. Determination of color based on Munsell Color Chart for Plant Tissues. The six samples of different varieties was used which has different flower color as follow respectively: yellow corolla with pink corona (var1); yellow corolla with white corona (var2); yellow corolla with pink honey line and pink corona (var3); pink corolla with pink honey line and pink corona (var4); pink corolla with pink honey line and white corona (var5); and white corolla with white corona (var6). The six varieties have different characteristic of vegetative and flower part both on qualitative and quantitative measurement. The cluster analyses resulted two sister groups. The first group (group A) consisted of var3, var4, var5, and var6, and the second group (group B) consisted of var1 and var2. Groups A was consisted of two smaller groups, namely group C and group D. Group C consisted of var3, var4 and var5, while group D consisted of var6

The chromosomes of Gryllus field cricket populations in central Chile (Insecta: Grylloptera: Gryllidae)

1985 ◽  
Vol 63 (11) ◽  
pp. 2626-2631 ◽  
Author(s):  
M. Lamborot ◽  
E. Alvarez-Sarret
Keyword(s):  
Taxonomic Revision ◽  
B Chromosomes ◽  
Field Cricket ◽  
X Chromosomes ◽  
Specific Level ◽  
Central Chile ◽  
Group A ◽  
The Common ◽  
Group B ◽  
Chilean Populations

Samples of Gryllus crickets from 13 localities in central Chile were studied to determine the number and morphology of their chromosomes. The diploid number was found to be 28 autosomes plus XO for males and XX for females. Three populations out of 13 analyzed presented a high percentage of individuals bearing one, two, three, or four supernumerary chromosomes; the B chromosomes are the smallest of the complement. The common karyotype can be arranged into three groups: group A with nine pairs of metacentric chromosomes including the X chromosomes; group B with three pairs of submetacentrics, one of them with a satellite; and group C with three pairs of subtelocentric chromosomes. The diploid numbers reported for this group of populations of Gryllus fit well with those reported for several species of the genus, but great differences exist between the Chilean populations of Gryllus and all other species of the genus previously reported. Minor differences were established when the Chilean populations of Gryllus were compared with those of Gryllus argentinus from Argentina. The importance of the chromosomal differences at the specific level, the existence of the B chromosomes, as well as other chromosomal features are discussed. The name Gryllus fulvipennis Blanchard would seem advisable for the time being until a whole taxonomic revision of neotropical species of the genus is undertaken.

scholarly journals Molecular characterization of lternaria solani isolates on tomato plant Lycopersicum esculentum Mill

2019 ◽  
pp. 379-400
Author(s):  
Hajer Mohammed Alsouyid ◽  
Nuria Ali Elamri ◽  
Haifa Mohamed Duzan ◽  
Abdunabi Mohamed Abughania ◽  
Ammar Khalifa Aslougi
Keyword(s):  
Significant Variation ◽  
Morphological Characteristics ◽  
Molecular Characteristics ◽  
Morphological Studies ◽  
Rapd Pcr ◽  
Pcr Products ◽  
Obvious Association ◽  
Group A ◽  
Group B ◽  
Group D

Early blight disease causes severe damage to the foliar part of solanaceous crops including tomato. Fifteen isolates (12 from tomato, 2 from potato, 1 from pepper) were collected from different sources in Tripoli. Field and laboratory studies were conducted to determine cultural behaviour on PDA medium, morphological, pathogenic and molecular variation between isolates tested. Colonies of isolates revealed variation in their cultural behaviour on PDA medium ranging from cottony to appressed growth, with colour ranging between light to dark olivaceous. The pigments released by the isolates changed the medium colour to grey or brown. Morphological studies of the fungal isolates exhibited short conidiophores bearing a single or chains of paired conidia. This study revealed a significant variation in conidial size for the isolates tested ranging from 23.45 to 46.90 x 7.70 to 14.00 µm. Pathogenicity testes on fruits, plants, and detached leaves of tomato indicated a high significant variation between isolates tested ranging from highly to moderate or weak pathogenic. Genetic diversity of A. solani isolates using RAPD-PCR with oligonuclotide primers revealed significant differences in the appearance of polymorphic and monomorphic banding patterns. Three primers (OPA-07, OPA-09, OPJ-09) out of ten were able to determine the genetic fingerprints of tested isolates. Cluster analysis of RAPD-PCR products showed that primer OPA-07 was able to classify the isolates into five groups: group A (TF4,TF7, TL1, TL3), group B (TF1,TF3, TF8, PEF), group C (TF5, TF6, TF9, POL1, POL2), whereas the remaining two isolates TL2 and TF2 were unique in their patterns and were designated as group U1 and U2 respectively. Primer OPA-09 revealed four distinct genetic groups designated as: group A (TF4, TF6, TF7, TF8, TL2), group B (POL1, TL3, TF3), group C (TF5, POL2) and group D (TL1, TF1, TF2, TF9, PEF). However primer OPJ-09 was able to split the isolates tested into four distinct clusters: group A (TF1, TF7, TL3, PEF), group B (TF3, TF8, POL2), group C (TF2, TF6, TF9, TL2) and group D (TF4, TF5). The results of RAPD-PCR demonstrate existence of considerable variation in molecular characteristics of A. solan iisolates. Accordingly these isolates were classified into different groups and unique patterns with no obvious association between the pattern of clustering of the isolates and their host of origin, morphological characteristics and pathogenicity.

scholarly journals Study of the Morphological Characteristics of the Human Gallbladder in Relation to Age and Sex of Bangladeshi People

2014 ◽  
Vol 11 (2) ◽  
pp. 81-85
Author(s):  
Khalilur Rahman ◽  
Afruza Bulbul Akhter ◽  
Selina Anwar ◽  
Anjum Ara Begum ◽  
Sultan Ahmed ◽  
...  
Keyword(s):  
Age Groups ◽  
Morphological Characteristics ◽  
Anatomical Variations ◽  
Mean Value ◽  
Human Gallbladder ◽  
Male And Female ◽  
Mean Values ◽  
Group A ◽  
Group B ◽  
Age And Sex

Context: Variations in the morphology of the gallbladder have long been debated by the abdominal surgeons. So it is important for the surgeons to appreciate the possible anatomical variations that can be encountered during surgery to prevent post operative complications during cholecystectomy. This study was aimed at to find out any variations in the morphology of the postmortem gallbladder in adult Bangladeshi male and female to find out any difference in the gallbladder morphology in relation to age and sex. Material & methods: This study was done on sixty (60) human postmortem gallbladder from Bangladeshi male and females of two age groups- group A age between 20-40 years and group B age between 41-65 years. Among the morphological parameters length, breadth, thickness and volume of the gallbladders were measured. Result: Result of the present study showed that the mean values of gross morphological features of the gall bladder (length, breadth, thickness, volume & weight), were higher in group B than group A except the thickness in female which show somewhat higher mean value in group A than group B. The result showed significantly high value for length and volume in case of male only (p<.05) in group B than group A. When comparison were made between these values in regard of sex, it was found that males of group B showed higher mean value for all parameters than females of group B and result showed a significantly higher value for the length of gallbladder(p<.05). But in case of group A, whereas male had higher mean value for length and weight and, female had higher mean value for breadth, thickness and volume though no values were significantly different. Conclusion: The higher mean values of different parameters of the gallbladder in elderly males and also from their female counterparts of the same age groups may be due to shorter size of the females. Again some parameters showed higher values in females (breadth, thickness and volume) which may indicate the predominance of cholelithiasis in females. Again most of the values in male and female of elderly were higher than the younger groups indicate the formation of gallstones in elderly. DOI: http://dx.doi.org/10.3329/bja.v11i2.20676 Bangladesh Journal of Anatomy, July 2013, Vol. 11 No. 2 pp 81-85

scholarly journals Morphological Characteristics of Posterior Wall Fragments Associated with Acetabular Both-column Fracture

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Siyu Tian ◽  
Yajie Chen ◽  
Yingchao Yin ◽  
Ruipeng Zhang ◽  
Zhiyong Hou ◽  
...  
Keyword(s):  
Articular Surface ◽  
Intraclass Correlation ◽  
Morphological Characteristics ◽  
Posterior Wall ◽  
Fracture Fragment ◽  
Posterior Cortex ◽  
Posterior Wall Fracture ◽  
Group A ◽  
Group B ◽  
Posterior Wall Fractures

AbstractTreatment of both-column fractures with posterior wall involvement is still a controversial topic. This type of posterior wall fracture is different from isolated acetabular posterior wall fracture (AO/OTA62-A1). The aim of this study is to compare the morphology of the posterior wall fragments of these two fracture patterns using computed tomography (CT) scans. All measured data were compared, and the differences between the groups (acetabular both-column fractures with posterior wall involvement were included in group A, and acetabular isolated posterior wall fractures were included in group B) were significant (P ≤ 0.05), including the direction angle, displacement, articular surface-posterior cortex ratio and articular surface area of the fracture fragment. The intraclass correlation coefficient of the measurements included inter-observer (ICC = 0.860) and intra-observer (ICC = 0.853). The morphology of the posterior wall fragments associated with both-column fractures is significantly different from that in isolated acetabular posterior wall fractures, and the treatment of the posterior wall fragment involved in both-column fractures of the acetabulum should be different from that of isolated acetabular posterior wall fractures.

An ultrastructural study of sertoli cells in two geographically isolated populations of Aphanius dispar

1992 ◽  
Vol 50 (1) ◽  
pp. 548-549
Author(s):  
Taber A. Ba-Omar ◽  
Philip F. Prentis
Keyword(s):  
Ultrastructural Level ◽  
Uranyl Acetate ◽  
Freshwater Teleost ◽  
Isolated Populations ◽  
En Bloc ◽  
The North ◽  
Group A ◽  
Ultrathin Sections ◽  
Group B ◽  
Geographically Isolated

We have recently carried out a study of spermiogenic differentiation in two geographically isolated populations of Aphanius dispar (freshwater teleost), with a view to ascertaining variation at the ultrastructural level. The sampling areas were the Jebel Al Akhdar in the north (Group A) and the Dhofar region (Group B) in the south. Specimens from each group were collected, the testes removed, fixed in Karnovsky solution, post fixed in OsO, en bloc stained with uranyl acetate and then routinely processed to Agar 100 resin, semi and ultrathin sections were prepared for study.

Comparison of one-year prognosis of patients classified as chronic critical lower limb ischaemia according to TASC II or European consensus definition in the COPART cohort

VASA ◽  
2015 ◽  
Vol 44 (3) ◽  
pp. 0220-0228 ◽  
Author(s):  
Marion Vircoulon ◽  
Carine Boulon ◽  
Ileana Desormais ◽  
Philippe Lacroix ◽  
Victor Aboyans ◽  
...  
Keyword(s):  
Medical Treatment ◽  
Critical Limb Ischaemia ◽  
Limb Ischaemia ◽  
Medical Group ◽  
Consensus Definition ◽  
Transcutaneous Oxygen ◽  
European Consensus ◽  
Group A ◽  
One Year ◽  
Group B

Background: We compared one-year amputation and survival rates in patients fulfilling 1991 European consensus critical limb ischaemia (CLI) definition to those clas, sified as CLI by TASC II but not European consensus (EC) definition. Patients and methods: Patients were selected from the COPART cohort of hospitalized patients with peripheral occlusive arterial disease suffering from lower extremity rest pain or ulcer and who completed one-year follow-up. Ankle and toe systolic pressures and transcutaneous oxygen pressure were measured. The patients were classified into two groups: those who could benefit from revascularization and those who could not (medical group). Within these groups, patients were separated into those who had CLI according to the European consensus definition (EC + TASC II: group A if revascularization, group C if medical treatment) and those who had no CLI by the European definition but who had CLI according to the TASC II definition (TASC: group B if revascularization and D if medical treatment). Results: 471 patients were included in the study (236 in the surgical group, 235 in the medical group). There was no difference according to the CLI definition for survival or cardiovascular event-free survival. However, major amputations were more frequent in group A than in group B (25 vs 12 %, p = 0.046) and in group C than in group D (38 vs 20 %, p = 0.004). Conclusions: Major amputation is twice as frequent in patients with CLI according to the historical European consensus definition than in those classified to the TASC II definition but not the EC. Caution is required when comparing results of recent series to historical controls. The TASC II definition of CLI is too wide to compare patients from clinical trials so we suggest separating these patients into two different stages: permanent (TASC II but not EC definition) and critical ischaemia (TASC II and EC definition).

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