scholarly journals The productivity in the beekeeping sector of Comalcalco, Tabasco, for the design of an improvement proposal

2021 ◽  
pp. 28-32
Author(s):  
Génesis PAYRÓ-GARCÍA ◽  
Juana María MOREJON-SANCHEZ ◽  
Emeterio PAYRÓ–DE LA CRUZ ◽  
Manuela de Jesús MONTEJO-ZAMUDIO
Keyword(s):  
Genetic Improvement ◽  
Likert Scale ◽  
Political Support ◽  
Business Culture ◽  
Cultural Economic ◽  
Context Variable ◽  
Context Variables ◽  
Improvement Programs

The objective of this research was to analyze the productivity of the beekeeping sector of the municipality of Comalcalco, Tabasco for the design of an improvement proposal, which was approached by studying the behavior of the context variables (environmental, cultural, economic, political, social and technological) and its influence on the dependent variable, (productivity). For this, a design of the Likert scale tool was carried out, which is composed of sections that include the context variables, through this tool the results were analyzed, then SWOT matrices (Strengths, Weaknesses, Opportunities, Threats) were generated. for each context variable, from which the following improvement proposals were obtained according to each variable respectively; characterize natural flowering, foster a business culture, create income control, manage political support, disseminate the benefits of bees to eradicate fear from society, and manage genetic improvement programs.

scholarly journals Application of Tissue Culture in Plant Reproduction

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 342
Author(s):  
Elena Corredoira ◽  
Rita L. Costa
Keyword(s):  
Tissue Culture ◽  
Genetic Improvement ◽  
Plant Reproduction ◽  
Climatic Conditions ◽  
Improvement Programs

The increasing degradation of forests, together with a higher demand for wood and fruit, has led to the need for more efficient trees adapted to the current climatic conditions and, thus, to the need for genetic improvement programs [...]

scholarly journals Population structure and genetic diversity analysis in Sali (Oryza sativa) rice germplasm of Assam using microsatellite markers

2021 ◽  
Vol 58 (2) ◽  
pp. 279-286
Author(s):  
Sandhani Saikia ◽  
Pratap Jyoti Handique ◽  
Mahendra K Modi
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Genetic Improvement ◽  
Crop Improvement ◽  
Mean Value ◽  
Diversity Analysis ◽  
Rice Cultivars ◽  
Improvement Program ◽  
Information Index ◽  
Improvement Programs

Genetic diversity is the source of novel allelic combinations that can be efficiently utilized in any crop improvement program. To facilitate future crop improvement programs in rice, a study was designed to identify the underlying genetic variations in the Sali rice germplasms of Assam using SSR markers. The 129 SSR markers that were used in the study amplified a total of 765 fragments with an average of 5.93 alleles per locus. The Shannon's Information Index was found to be in the range from 0.533 to 1.786. The Polymorphism Information Content (PIC) fell into the range from 0.304 to 0.691 with a mean value of 0.55. The overall FST value was found to be 0.519 that indicated the presence of genetic differentiation amongst the genotypes used in the study. The Sali population was divided into two clusters. The information obtained from the present study will facilitate the genetic improvement of Sali rice cultivars.

scholarly journals Biofuel plant species and the contribution of genetic improvement

2011 ◽  
Vol 11 (spe) ◽  
pp. 16-26 ◽  
Author(s):  
Luiz Antônio dos Santos Dias
Keyword(s):  
Growth Rate ◽  
Plant Species ◽  
Genetic Improvement ◽  
Raw Materials ◽  
Environmental Security ◽  
Biodiesel Production ◽  
Special Focus ◽  
Annual Growth Rate ◽  
Breeding Programs ◽  
Improvement Programs

The paper analyses the puzzle of the food-energy-environmental security interaction, to which biofuels are part of the solution. It presents and discusses the contribution of genetic improvement to biofuels, with regard to the production of raw materials (oil and ethanol-producing plant species) and designs perspectives, opportunities, risks and challenges, with a special focus on the Brazilian scene. Bioethanol is a consolidated biofuel owing largely to the sugarcane breeding programs. These programs released 111 sugarcane cultivars and were responsible for a 20.8 % gain in productivity of bioethanol (in m³ ha-1) between 2000 and 2009. The program of Brazilian biodiesel production, initiated in 2005, had an annual growth rate of 10 % and the country is already the world's fourth largest producer. However, the contribution of breeding to biodiesel production is still modest, due to the lack of specific improvement programs for oil.

scholarly journals La sustentabilidad en tiendas de conveniencia de la ciudad industrial en Villahermosa. Tabasco, para el desarrollo de una propuesta

2019 ◽  
pp. 23-27
Author(s):  
Nancy Estela Arias-Rodríguez ◽  
Juana María Morejón-Sánchez ◽  
Casandra Angeles-Guzmán ◽  
Yaitla Aitza Reyes-Osorio
Keyword(s):  
Environmental Variables ◽  
The Self ◽  
Cultural Economic ◽  
Convenience Stores ◽  
Surrounding Environment ◽  
Context Variables ◽  
Local Contexts ◽  
Self Service ◽  
The Impact ◽  
Theoretical Foundations

This research analyzes the sustainability of the convenience stores of the industrial cd in Villahermosa, Tabasco. Considering the behavior of the research variable (sustainability) in different international, national and local contexts. As well as the theoretical foundations on which this variable is based. A diagnosis is made on the sustainability of convenience stores, generating a comprehensive scenario, in order to design a proposal. The tool that was used was the Likert scale from which an instrument was designed to determine how each of the cultural, economic, social, political, technological and environmental variables (independent or context variables) influence the research variable (sustainability of convenience stores). These context variables are in constant changes and movements and directly influence the convenience stores either positively or negatively. The instrument was applied in the convenience stores of the industrial cd of Villahermosa, Tabasco, in order to obtain decisive results for the sustainability of the self-service stores, the Excel tool version 2010 was used, in which tables were obtained and graphics, simplifying the content of the data giving specific and necessary results for the development of the proposal. From the results obtained, a model is designed to improve the sustainability of the convenience stores of the industrial cd in Villahermosa Tabasco, which will achieve a growth that will be strongly linked to social responsibility to provide attention to the workers who are part of them and the reduction of the impact on the surrounding environment. Ensuring the competitiveness profitability and permanence of convenience stores.

Genetic improvement programs for aquaculture species

2003 ◽  
Vol 2003 ◽  
pp. 225-225
Author(s):  
B. Gjerde ◽  
B. Villanueva
Keyword(s):  
Genetic Improvement ◽  
Human Population ◽  
Feeding Practices ◽  
Food Crops ◽  
Genetic Quality ◽  
Genetically Improved ◽  
Improvement Programs ◽  
High Yields ◽  
Aquaculture Production

The high yields obtained in agriculture rely heavily on the use of domesticated and genetically improved breeds and varieties. Until quite recently this has not been the case for most farmed aquaculture species that, in the genetic sense, are still much closer to the wild state than are the major terrestrial animals and food crops. Less than 10 % of the total world aquaculture production is based on improved strains. Due to a growing human population and a decline in production from capture fisheries, there is therefore a great disparity between the need for increased aquaculture production and the genetic quality of the strains available to meet that need. Moreover, full benefits of investments in management improvements (feed and feeding practices, control of diseases, etc.) can only be obtained through the use of genetically improved animals.

Perennial ryegrass breeding in New Zealand: A dairy industry perspective

2012 ◽  
Vol 63 (2) ◽  
pp. 107 ◽  
Author(s):  
Julia M. Lee ◽  
Cory Matthew ◽  
Errol R. Thom ◽  
David F. Chapman
Keyword(s):  
New Zealand ◽  
Perennial Ryegrass ◽  
Genetic Improvement ◽  
Plant Traits ◽  
Dairy Industry ◽  
Animal Production ◽  
Plant Performance ◽  
Breeding Programs ◽  
Improvement Programs ◽  
Pasture Plants

Genetic improvement programs for livestock and pasture plants have been central to the development of the New Zealand (NZ) pastoral industry. Although genetic improvement of livestock is easily shown to improve animal production on-farm, the link between genetic improvement of pasture plants and animal production is less direct. For several reasons, gains in farm output arising from improved plant performance are more difficult to confirm than those arising from livestock improvement, which has led to some debate in the livestock industries about which plant traits to prioritise in future breeding programs to deliver the greatest benefit. This review investigates this situation, with the aim of understanding how genetic improvement of perennial ryegrass (Lolium perenne L.), the predominant pasture grass, may more directly contribute towards increased productivity in the NZ dairy industry. The review focuses on the dairy industry, since it is the largest contributor to the total value of NZ agricultural exports. Also, because rates of pasture renewal are greater in the dairy industry compared with the sheep and beef industries, genetic gain in pasture plants is likely to have the greatest impact if the correct plant traits are targeted. The review highlights that many aspects of ryegrass growth and ecology have been manipulated through breeding, with evidence to show that plant performance has been altered as a result. However, it is not clear to what extent these gains have contributed to the economic development of the NZ dairy industry. There are opportunities for breeders and scientists to work together more closely in defining economic traits that positively influence pasture performance and to translate this information to objectives for breeding programs, systematically linking information on the measured traits of ryegrass cultivars to economic values for those traits to assist farmer decision-making regarding the most appropriate cultivars to use in their farm system, and better defining genotype × environment interactions in key productivity traits of modern ryegrass cultivars. Changes in priorities for investment of public- and industry-good funds in forage improvement research and development will be needed if these opportunities are to be captured.

Conservation and management of genetic diversity: a domestic animal perspective

2001 ◽  
Vol 31 (4) ◽  
pp. 588-595 ◽  
Author(s):  
J SF Barker
Keyword(s):  
Genetic Diversity ◽  
At Risk ◽  
Genetic Improvement ◽  
High Stress ◽  
Domestic Animal ◽  
Production Traits ◽  
Animal Diversity ◽  
Gene Complexes ◽  
Improvement Programs ◽  
Primary Focus

In the context of domestic animal diversity, the term "breed" is conventionally used for all recognized populations. There are in total about 5000 breeds, a small proportion of which are in planned programs for genetic improvement, while about 30% are at risk of extinction. The primary focus is on the conservation of breeds, including management for better utilization (breeding programs) and conserving those at risk, with the aim of minimizing the loss of among breed diversity. The majority of the world's breeds are in the developing countries, with production environments that are low to medium input and high stress, and each may be expected to have adapted to its specific environment. Empirical evidence strongly supports the expectation that the genetic basis of population differentiation for fitness traits will be nonadditive, with different adaptive gene complexes evolved in each breed. Genetic improvement programs therefore should start with an adapted population, with selection then for production traits. As not all breeds can be conserved, priorities must be determined. Suggested criteria (breed divergence, risk of breed extinction, breed "merit," and within-breed variation) are presented and evaluated. Similar approaches may be appropriate for the conservation of genetic diversity of forest trees.

scholarly journals Do Crossbreeding using Exotic Breeds in Goat is the Right Solution for a Low-input Production System in Ethiopia? : A Review

2021 ◽  
Author(s):  
Zeleke Tesema ◽  
Damitie Kebede
Keyword(s):  
Production System ◽  
Genetic Improvement ◽  
Reproductive Technologies ◽  
Improvement Program ◽  
Selection Program ◽  
Low Input ◽  
The Future ◽  
Improvement Programs ◽  
Breed Selection ◽  
The Right

Analysis and evaluation of the previous genetic improvement attempts and their fruition are paramount to make the right decision in the future. Hence, this paper reviews the status of goat genetic improvement programs through quantitative evidence and elucidates how it can be implemented in the future through an intensive literature review. Goat genetic improvement through crossbreeding was initiated early in 1975. However, most crossbreeding programs have lacked analysis of the existing resources and infrastructure and also lack long-term strategies. As a result, crossbreeding program was discontinued without significant contribution due to incompatibility of the exotic genotype with low-input production systems. On the other hand, the moderate to high genetic variation within a population open the window for within-breed selection. Accordingly, a well-designed within-breed selection program was initiated late in 2013 for specified breeds. Currently, governmental and non-governmental institutions plan to scale up community-based within-breed selection program. Besides, the efficiency of assisted reproductive technologies in goat genetic improvement was evaluated by ICARDA and reported a moderate achievement. However, the application of molecular technologies in Ethiopia is only limited to diversity studies. Nevertheless, there is an opportunity to use molecular technologies to enhance the genetic progress of a genetic improvement program. In conclusion, the expected benefits from crossbreeding program were not obtained and will not be obtained under the existing low input-production system. Therefore, a within-breed selection program would be an ideal option for the existing low-input production system if integrated with assisted reproductive and molecular technologies.

scholarly journals Graphical analysis to determine the stability and adaptability of yield characteristics of dwarf cashew trees

2021 ◽  
Vol 15 ◽  
Author(s):  
Gilberto Ken Iti Yokomizo ◽  
Kuang Hongyu ◽  
Francisco Das Chagas Vidal Neto ◽  
Dheyne Silva Melo ◽  
Luiz Augusto Lopes Serrano
Keyword(s):  
Experimental Design ◽  
Genetic Improvement ◽  
Graphical Analysis ◽  
Gge Biplot ◽  
Northeast Region ◽  
Test Characteristics ◽  
Effective Selection ◽  
General Average ◽  
Improvement Programs ◽  
The Stability

The cashew culture provides jobs and boosts the economy of the Northeast region and is therefore of great socioeconomic importance. In genetic improvement programs, the existence of an interaction between genotypes and environments has been observed, making studies of adaptability and stability essential for effective selection. Thus, the objective was to study the performance of early dwarf cashew clones using the GGE Biplot in three agricultural years (2016–2018). The experimental design was in randomized blocks with 25 treatments (clones) and three replications. The plot consisted of four plants spaced 8 × 8 m apart. The variables evaluated were nut yield throughout the harvest (PRC), average nut weight (PMC), and percentage of nuts pierced (PCF). The clones most characterized as ideotypes were T25, T14, T7, T8, T2, T10, T15, and T22 for PRC; T12, T1, and T16 for PMC; and T5, T24, T21, and T8 for PCF, with coincidence for T8 in PC and PCF. Clones with values above the general average, with emphasis on stability, were T14 and T2 for PRC; T12, T1, T16, T8, and T22 for PMC; and T5 and T22 for PCF. The years with test characteristics, that is, those with average environmental factors for all years, were 2016 for PRC and 2018 for PCF, with no test year for PMC; the every years were more discriminating to PCF, with the exception of 2016 for PRC.

Sign in / Sign up

Export Citation Format

Share Document