-
Ammonites of the Oxfordian and Kimmeridgian Age from North of Mexico
Raúl Sabino Carrasco-Ramírez
Issue:
Volume 10, Issue 4, July 2022
Pages:
131-136
Received:
27 May 2022
Accepted:
16 June 2022
Published:
17 August 2022
DOI:
10.11648/j.ajbio.20221004.11
Downloads:
Views:
Abstract: Few kilometres west of Aramberri, N. L This research work deals with the study of the ammonites of the Upper Jurassic outcrops, México were studied ammonites from the Ibarillas South of Nuevo Leon, Mexico, driving on federal highway No. 61 we get to Aramberri locality section which consists of 40 m of limestones at its lower part of the Zuloaga Formation. which bears the ammonite fauna described herein. Most of the north-north-west trending ranges of the area are made up of schist rocks of Paleozoic age, resting unconformably are limestones of Upper Jurassic age and finally are covered unconformably by conglomerates of Tertiary age. All collected ammonites were taxonomically studied and at the same time are included pictures with descriptions of four species one is the Upper Oxfordian Vinalesphinctes ex gr. roegi, the other three came from the Lower Kimmeridgian of North of Mexico. One of the three taxa described here is the Upper Oxfordian genus Vinalesphinctes. Belong to the Superfamilies: Perisphinctacea and Haplocerataceae are included in two families, three genus and four species Its upper part are 70 m of argillaceous limestones, shales and sandstone of La Caja Formation. The main objective of this article is the description of ammonites fauna. Is the first time in Mexico to be presented a sequence of rocks like Ibarillas section containing indicative ammonites of Oxfordian and Kimmeridgian age. In the Zuloaga Fm. is first time describe the presence of Vinalisphinctes gr. roigi indicanting the upper Oxfordian Bifurcating Zone. In the La Caja Fm. were recorded Idoceras sanlazarense, and Haploceras cf. costatum. of Kimmeridgian age. Close taxonomic and tectonic framework inside and outside Mexico of the Ibarillas fauna are not discussed in detail here, the ammonite species of the lower part of its section are common within faunas of Central México: Hidalgo and San Luis Potosí states which are therefore Thetyan in origenFauna correlations are stablished with North– Central and North of México. The paleogeographic interpretation based on the ammonites described here indicate a position of marine communication between the eastern Tethys and the western Pacific by the so called Hispanic Corridor.
Abstract: Few kilometres west of Aramberri, N. L This research work deals with the study of the ammonites of the Upper Jurassic outcrops, México were studied ammonites from the Ibarillas South of Nuevo Leon, Mexico, driving on federal highway No. 61 we get to Aramberri locality section which consists of 40 m of limestones at its lower part of the Zuloaga For...
Show More
-
Effect of Type and Storage Period on the Characteristics of (Acacia senegal) Seeds on North Kordofan, Sudan
Yahia Ibrahim Mohammed Abutaba,
Mehad Elbelil Adam,
Muneer Elyas Siddig Eltahir
Issue:
Volume 10, Issue 4, July 2022
Pages:
137-142
Received:
19 June 2022
Accepted:
19 July 2022
Published:
29 August 2022
DOI:
10.11648/j.ajbio.20221004.12
Downloads:
Views:
Abstract: The study aimed to investigate the effect of the storage longevity period and the type of storage on the characteristics and viability of Acacia senegal (Hashab) seeds, to attain an appropriate method of storage. The experiment was applied at the Regional Tree Seed Centre-Elobied during the year 2016, and seeds were collected from El-Damoukya. The tests were applied (purity, number of seeds/kg, moisture content, germination, viability) before seed and after storage in three different stores (normal, cold and deep), where the tests were conducted after 3, 6, 9, 12 months for each sample. The seeds trees were divided into three groups, and each seed group was stored in the stores. Experiment design by Randomized Complete Block Design (RCBD) with three replicates in storages by repeating three samples. The data analyzed by SAS software for ANOVA table, while LSD test used for means separation for the results. The results showed high significant difference (α = 0.0001) in the moisture content of seed in the normal store with high ratio (20%) in the fourth period (12 months), while in the cold stores was (15%). The results showed a decrease in the number of seeds/ kg for the deep store by (9091 seeds) compared to the normal and cold store. The deep and cold stores are suitable for storing seeds for 12 months and the normal store can be considered as unsuitable of which affected directly by surrounding factor and led to an increase in the moisture content of the seeds, resulting in the weight gain of the seeds and the decrease in the number of seeds/kg. This study recommends the use of deep and cold storage of Hashab seed.
Abstract: The study aimed to investigate the effect of the storage longevity period and the type of storage on the characteristics and viability of Acacia senegal (Hashab) seeds, to attain an appropriate method of storage. The experiment was applied at the Regional Tree Seed Centre-Elobied during the year 2016, and seeds were collected from El-Damoukya. The ...
Show More
-
Wheat Response to N-P-S-Zn-B and Urea Fertilizers Across Soil Types and Agro-Ecologies, Arsi Zone of Oromia
Mengistu Chemeda,
Anbessie Debebe,
Gobana Negasa,
Dugasa Gerenfes,
Kasu Tadesse,
Asrat Mekonnen
Issue:
Volume 10, Issue 4, July 2022
Pages:
143-148
Received:
5 July 2022
Accepted:
9 August 2022
Published:
29 August 2022
DOI:
10.11648/j.ajbio.20221004.13
Downloads:
Views:
Abstract: Experiments were conducted in three consecutive cropping years (2017, 2018 and 2019) at two districts (Gedeb-Hasasa and Lemu-Bilbilo) on different farmers fields, to determine optimum rates of N-P-S-Zn-B and urea fertilizers for wheat crop by varying levels of N-P-S-Zn-B (0, 100, 150, 200, 250 kg ha-1 ), urea (0, 150, 250, 350 kg ha-1) and blank recommended NP. The soil result of the sites crop after harvest reveled that, treatments were significantly (p < 0.05 and p < 0.01) affected pH, total N organic matter and available P for samples collected from experimental sites of wheat crop, and different fertilizer level had significant (p < 0.05) effect on crop after harvest pH contents of soil at Gedeb-Hasasa. The applied treatments also significantly (p < 0.05 and p < 0.01) affected pH, total N, organic carbon and available P for samples collected from trial sites on both farmer field and sub-station of the crop at Lemu-Bilbilo. Combined levels of the two fertilizers were significantly (p < 0.05) affected grain and biomass yields at both districts. The maximum grain and biomass yield (6137 and 13192 kg ha-1) in the first year and minimum (3786 and 7651 kg ha-1) in the second year of cropping season. Significant grain and biomass yield (6234 and 13518 kg ha-1) were also received from the application of 250 and 350 kg ha-1 N-P-S-Zn-B and urea, respectively at Gedeb-Hasasa. Maximum grain and biomass yield (7043 and 13516 kg ha-1) in the third year and minimum (4265 and 9343 kg ha-1) in the first year of cropping season were recorded, and significant grain and biomass yield (6235 and 12865 kg ha-1) were also obtained from the application of 250 and 350 kg ha-1 N-P-S-Zn-B and urea, respectively, at Lemu-Bilbilo.
Abstract: Experiments were conducted in three consecutive cropping years (2017, 2018 and 2019) at two districts (Gedeb-Hasasa and Lemu-Bilbilo) on different farmers fields, to determine optimum rates of N-P-S-Zn-B and urea fertilizers for wheat crop by varying levels of N-P-S-Zn-B (0, 100, 150, 200, 250 kg ha-1 ), urea (0, 150, 250, 350 kg ha-1) and blank re...
Show More
-
Estimation Compatibility of Grapevine Rootstock IAC572 with Registered Grapevine Varieties in Ethiopia
Etsegenet Kiflu,
Abaynesh Asegid
Issue:
Volume 10, Issue 4, July 2022
Pages:
149-152
Received:
31 May 2022
Accepted:
23 July 2022
Published:
29 August 2022
DOI:
10.11648/j.ajbio.20221004.14
Downloads:
Views:
Abstract: Grapevine (Vitisvinifera) belongs to the family Vitaceae genus Vitis containing 79 accepted species of vining plants in the flowering plant. It is very adaptable plant and can grow in many environments and soil conditions. Soil salinity has become the major limiting factor in many tropical areas like Ethiopia where irrigation is the major means of grape production. This calls for the use of salt tolerant rootstocks in the system. IAC 572 is one of the salt tolerant varieties developed for tropical environment. It is an inter-specific cross between VITIS TILIAEFOLIA X MILLARDET ET GRASSET 101-14. Graft success is more likely when the scion and rootstock are closely related or of the same species. But it can vary substantially even among related species and clones within species. Therefore compatibility study was needed to see if the interspecific cross IAC 572 is compatible with the varieties that already are in production. Wine grape varieties Sangiovese and Chenin Blanc were cleft grafted on one year old IAC 572 rootstock under lat house condition. All the necessary graft compatibility parameters were collected in due time. The percentage of callus production ranged from 68.0 percent for Chenin Blanc to 41.1.0 percent for Sangiovese released grapevine varieties. Chenin Blanc had a higher transplant compatibility rate of 53.3 percent than Sangiovese, who had a graft compatibility rate of 40%.
Abstract: Grapevine (Vitisvinifera) belongs to the family Vitaceae genus Vitis containing 79 accepted species of vining plants in the flowering plant. It is very adaptable plant and can grow in many environments and soil conditions. Soil salinity has become the major limiting factor in many tropical areas like Ethiopia where irrigation is the major means of ...
Show More
-
Anti-Helicobacter pylori Activity of Biosynthesized Silver Nanoparticles
Randa Mohammed Dhahi,
Bushra Shehab Hamad
Issue:
Volume 10, Issue 4, July 2022
Pages:
153-159
Received:
3 June 2022
Accepted:
19 August 2022
Published:
31 August 2022
DOI:
10.11648/j.ajbio.20221004.15
Downloads:
Views:
Abstract: Background: Recently, there was a great demand for a new, safe, natural, ecofriendly and low cost production of nano-sized silver based antibiotics which become increasingly important in order to resolve the difficulties related with antimicrobial functionalities. Objective: The present study investigates the antibacterial activity of the biosynthesized silver nanoparticles from the hot aqueous extract of the red cabbage Brassica oleracea var capitata f. rubra against the Helicobacter pylori after isolating and characterizing it by microbiological and biochemical tests. Method: The silver nanoparticles have been characterized by using the ultra Violet Visible (UV-vis), X-Ray Diffraction (XRD), the Atomic Force Microscope (AFM) and by scanning Electron Microscope (SEM) coupled with Energy Dispersive X-Ray (EDX). The biosynthesized silver nanoparticles from red cabbage were tested for their antimicrobial activity by 96-wells micro titter plate method against pathogenic H. pylori that clinically isolated from biopsies of patient with stomach ulcers. Result: It was found that the silver nanoparticles have spherical shape with a mean size of 42.34 nm. The study also reveals that the silver nanoparticles have an efficient inhibitory on the bacteria. It was easy to synthesize the silver nanoparticles by this eco-friendly biological method. Conclusion: The biosynthesized silver nanoparticles were efficient to be used as natural antibiotic to treat the stomach ulcer.
Abstract: Background: Recently, there was a great demand for a new, safe, natural, ecofriendly and low cost production of nano-sized silver based antibiotics which become increasingly important in order to resolve the difficulties related with antimicrobial functionalities. Objective: The present study investigates the antibacterial activity of the biosynthe...
Show More
