Article
Agronomy
Christine K. Mutoni, Felister M. Nzuve, Douglas W. Miano, Benjamin M. Kivuva, Ivan J. Obare, Trushar M. Shah, Morag E. Ferguson
Summary: In order to develop a strategy for improving cassava productivity in Lamu County, Kenya, the authors conducted a study to understand the genetic diversity of the cultivars being grown by farmers. The results showed that there were close relationships between the local landraces in Lamu and other coastal landraces, while there were greater differences from breeding lines and inland landraces. The study also identified several genotypes that could be valuable for conservation and future use.
GENETIC RESOURCES AND CROP EVOLUTION
(2023)
Article
Plant Sciences
Caroline Cardoso dos Santos, Luciano Rogerio Braatz de Andrade, Catia Dias do Carmo, Eder Jorge de Oliveira
Summary: By utilizing phenotypic and genotypic data, this study developed optimized core collections for cassava, which exhibited similar genetic parameters to the complete collection. The findings highlight the importance of developing optimized and valuable core collections for efficient plant breeding programs and genomic association studies.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Luciano Rogerio Braatz de Andrade, Massaine Bandeira e Sousa, Marnin Wolfe, Jean-Luc Jannink, Marcos Deon Vilela de Resende, Camila Ferreira Azevedo, Eder Jorge de Oliveira
Summary: This study evaluated the efficiency of genomic prediction methods and genetic models in optimizing clone and parent selection for cassava root yield and dry matter content. The results showed that prediction methods with additive-dominant genetic models had higher predictive ability for root yield, while the predictive ability for genotypic values did not differ between additive and additive-dominant genetic models. Dry matter content exhibited the highest heritability, predictive ability, and bias estimates among the traits. By shortening the breeding cycle time, genomic selection can significantly increase the selection proportion for root yield and dry matter content, accelerating the release of new varieties.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Plant Sciences
Carmen M. Avila, Cristina Rodriguez-Suarez, Sergio G. Atienza
Summary: This paper reviews the main advances in breeding and quality improvement of hexaploid tritordeum, emphasizing the importance of utilizing plant genetic resources effectively for the development of new crops. The success of tritordeum demonstrates the significance of adequate commercialization strategies and demonstrative experiences in developing new products for consumers.
Article
Agriculture, Dairy & Animal Science
Karolina Kaseja, Sebastian Mucha, Edward M. Smith, John Yates, Georgios Banos, Joanne Conington
Summary: This article investigates the impact of including genome-wide genotypes into breeding value predictions for UK Texel sheep. The study examines the change in accuracy values for conventional breeding values (EBVs) when animal genotypes are incorporated into genetic evaluations. The results show that using genotypes in breeding value estimation can increase accuracy, especially for un-phenotyped animals with good links to the reference population.
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2023)
Review
Plant Sciences
Emeline Nanou Dossa, Hussein Shimelis, Emmanuel Mrema, Admire Tichafa Isaac Shayanowako, Mark Laing
Summary: The potential yield of maize and other major crops is limited by various factors, including parasitic weeds such as Striga spp. Breeding for Striga resistance is considered to be the most economical and sustainable approach for resource-poor farmers and the environment. Understanding the genetic and genomic resources and components of Striga resistance is crucial for the genetic analysis and breeding of maize varieties with desirable traits. This review discusses the genetic and genomic resources, research progress, and opportunities in the genetic analysis of Striga resistance and yield components in maize for breeding.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Ecology
Nima Khalilisamani, Peter Campbell Thomson, Herman Willem Raadsma, Mehar Singh Khatkar
Summary: Estimating heritability based on individual phenotypic and genotypic measurements can be expensive and labour-intensive in commercial aquaculture breeding. This study investigated the feasibility of estimating heritability using within-family means of phenotypes and allelic frequencies. The results showed that at least 200 families of 60 progeny per family divided equally in two pools per family were required to effectively estimate the heritability of family means. Increasing the size of pools resulted in increasing the heritability of family means towards one.
Article
Horticulture
Geovani Luciano de Oliveira, Guilherme Francio Niederauer, Fernanda Ancelmo de Oliveira, Cinthia Souza Rodrigues, Jose Luiz Hernandes, Anete Pereira de Souza, Mara Fernandes Moura
Summary: The Agronomic Institute of Campinas (IAC) in Brazil developed a grapevine breeding program in the 1940s to create new grape varieties suitable for the country's tropical and subtropical regions. After 50 years and over 2,000 crosses, only 130 hybrids remain in the IAC collection with little information about their genetic characteristics. This study genotyped these hybrids and assessed their genetic diversity and population structure, as well as identifying their true parentage and verifying their pedigrees.
SCIENTIA HORTICULTURAE
(2023)
Article
Plant Sciences
Cynthia Idhigu Aghogho, Saviour J. Y. Eleblu, Moshood A. A. Bakare, Ismail Siraj Kayondo, Isaac Asante, Elizabeth Y. Y. Parkes, Peter Kulakow, Samuel Kwame Offei, Ismail Rabbi
Summary: The study aimed to assess the impact of genetic and genotype-by-environment interaction on the conversion of cassava roots into gari and fufu. The results showed that the environment and interaction explained more of the phenotypic variation among genotypes, indicating a strong genotype-by-environment interaction. Additionally, several high-performing genotypes with high product conversion rates were identified.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Plant Sciences
Himabindu Kudapa, Rutwik Barmukh, Hindu Vemuri, Sunita Gorthy, Rajasekhar Pinnamaneni, Mani Vetriventhan, Rakesh K. Srivastava, Priyanka Joshi, Ephrem Habyarimana, S. K. Gupta, Mahalingam Govindaraj
Summary: Micronutrient malnutrition is a serious threat to the developing world's human population, especially those relying on a cereal-based diet. Millets, as versatile crops, have the potential to address this issue due to their tolerance to abiotic stresses and rich nutritional characteristics. This review highlights recent genetic and genomic innovations in improving grain micronutrient density in millets, as well as advancements in high-throughput phenotyping and genetic diversity exploration. The integration of omics approaches, such as genomics and proteomics, can help develop nutrient-dense varieties for the future.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Jack J. Windig, Ina Hulsegge
Summary: Small populations can suffer from high inbreeding rates and associated genetic issues. The Retriever and Pointer software have been developed to assess inbreeding levels and simulate the effects of genetic management measures. These tools can be used for genetic management of various captive populations and have potential applications in education.
Article
Plant Sciences
Jaroslava Ovesna, Jana Chrpova, Lucia Kolarikova, Pavel Svoboda, Alena Hanzalova, Jana Palicova, Vojtech Holubec
Summary: This study evaluated a collection of barley wild relatives in the field and greenhouse to assess their resistance to fungal diseases. DNA analysis revealed genetic diversity within the collection, and barley-specific SSR markers were shown to efficiently distinguish different species and ecotypes. The findings highlight the value of this collection in breeding programs due to its genetic variability and resistance genes.
Article
Agriculture, Dairy & Animal Science
Da Ji, Xin Su, Junjie Yao, Wenzheng Zhang, Rongrong Wang, Shuhai Zhang
Summary: This study aimed to assess the current status of the germplasm resources of golden-backed carp in Guizhou Province, China. The results showed low genetic diversity in the five populations studied, with the Duyun population exhibiting the most significant genetic differentiation from the others.
Review
Plant Sciences
Theresa Bapela, Hussein Shimelis, Toi John Tsilo, Isack Mathew
Summary: This paper summarizes the progress, challenges, and opportunities in breeding drought-tolerant wheat varieties. It discusses genetic variation, selection methods, and the interaction between above-ground phenotypic traits and root attributes in drought adaptation. The review provides valuable information for wheat breeders and agronomists to develop and deploy drought-adapted and high-performing wheat varieties.
Article
Horticulture
Veronica Garcia, Patricia Castro, Teresa Millan, Juan Gil, Roberto Moreno
Summary: This study aimed to develop new diploid plant material using a tetraploid landrace 'Morado de Huetor' to widen the genetic base of garden asparagus. The results showed that the new population had higher genetic diversity compared to diploid cultivars and could be used to expand the genetic base of current diploid asparagus cultivars.
Article
Agronomy
Onildo Nunes de Jesus, Idalia Souza dos Santos, Lucas Kennedy Silva Lima, Taliane Leila Soares, Eder Jorge de Oliveira
Summary: The aim of this study was to identify hybrids of passion fruit with resistance to woodiness disease and desirable agronomic traits. Through evaluation of 92 BC2 hybrids and estimation of genetic parameters, several families were found to have potential for use in passion fruit breeding programs.
Article
Horticulture
Ariana Silva Santos, Edson Mario de Andrade, Andressa Rodrigues de Oliveira Sousa, Marcos Mota do Carmo Costa, Roberto Togawa, Priscila Grynberg, Carlos Priminho Pirovani, Saulo Alves Santos Oliveira, Walter dos Santos Soares Filho, Mauricio Antonio Coelho Filho, Abelmon da Silva Gesteira, Claudia Fortes Ferreira
Summary: This study analyzed the transcriptomes of citrus rootstocks 'Sunki Maravilha' and 'Sunki Tropical' under water deficit conditions, revealing significant gene expression variations and providing candidate genes for engineering or breeding citrus plants with drought tolerance. The differentially expressed genes identified are involved in various biological processes and molecular functions, with a focus on oxidoreductase, protein phosphorylation, transcriptional regulation, ligation processes, and response to oxidative stress.
SCIENTIA HORTICULTURAE
(2021)
Article
Agronomy
Alex C. Ogbonna, Luciano Rogerio Braatz de Andrade, Lukas A. Mueller, Eder Jorge de Oliveira, Guillaume J. Bauchet
Summary: This study characterized Brazilian cassava diversity through population genetics and clustering approaches, identifying 10 distinct genetic groups with heterogeneous linkage disequilibrium. Spatial population structure analysis revealed five ancestral populations related to distinct Brazilian ecoregions, highlighting the biogeographical landscape of Brazilian cassava.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Agronomy
Priscila Patricia dos Santos Silva, Massaine Bandeira e Sousa, Eder Jorge de Oliveira, Carolina Vianna Morgante, Carlos Roberto Silva de Oliveira, Simone Leal Vieira, Jeronimo Constantino Borel
Summary: This study identified genomic regions associated with water deficit in cassava using GWAS, with 62 SNPs identified across all 18 cassava chromosomes. These SNPs have the potential to be applied in marker-assisted selection of new cassava varieties tolerant to water deficit.
Article
Multidisciplinary Sciences
Cristiano Silva Dos Santos, Massaine Bandeira Sousa, Ana Carla Brito, Luciana Alves De Oliveira, Carlos Wanderlei Piler Carvalho, Eder Jorge De Oliveira
Summary: This study identified genomic regions associated with cassava starch paste properties (CSPP) and found several SNPs with significant associations. The results showed that CSPP is genetically controlled, especially on chromosome 18, and suggested potential candidate genes on chromosomes 17 and 18 for the regulation of CSPP. These findings have implications for breeding programs aiming to improve cassava root quality and select high-value starches.
Article
Multidisciplinary Sciences
Massaine Bandeira e Sousa, Luciano Rogerio Braatz de Andrade, Everton Hilo de Souza, Alfredo Augusto Cunha Alves, Eder Jorge de Oliveira
Summary: The study on cassava breeding analyzed various factors affecting flower abortion and proposed strategies to overcome them, providing new insights and methods for efficient breeding. Through experiments and analysis, reproductive barriers and pollen-pistil interactions were studied, leading to the identification of population structure of elite parental clones. Significant parental effects were identified, indicating the existence of reproductive barriers among certain cassava clones, and non-additive genetic effects played a role in trait inheritance. Pollen viability and pollen-stigma interactions were found to be significant for successful fertilization, with variations in pollen viability and stigma receptivity depending on clone and flowering stage.
Article
Multidisciplinary Sciences
Ravena Rocha Bessa de Carvalho, Diego Fernando Marmolejo Cortes, Massaine Bandeira e Sousa, Luciana Alves de Oliveira, Eder Jorge de Oliveira
Summary: This study aimed to use digital images to predict the total carotenoids content (TCC) of cassava roots based on their pulp color. The results showed a significant positive correlation between the b* and chroma indices and TCC, while the L* parameter showed no significant correlation. The predictive models had high accuracy, with the artificial neural network model performing the best with the smallest error.
Article
Horticulture
Onildo Nunes de Jesus, Lucas Kennedy Silva Lima, Taliane Leila Soares, Luana Nascimento da Silva, Idalia Souza dos Santos, Sidnara Ribeiro Sampaio, Eder Jorge de Oliveira
Summary: The study assessed the genetic variability of different genotypes of Passiflora using physical and chemical descriptors and digital image analysis, developed mathematical models for predicting passion fruit pulp weight, and found significant diversity among genotypes. Digital image analysis proved to be a practical method for detecting color variability in plant parts.
SCIENTIA HORTICULTURAE
(2022)
Article
Multidisciplinary Sciences
Camila Santiago Hohenfeld, Adriana Rodrigues Passos, Helio Wilson Lemos de Carvalho, Saulo Alves Santos de Oliveira, Eder Jorge de Oliveira
Summary: This study evaluated cassava genotypes for resistance to root rot disease in a field with a previous high disease incidence and identified possible genomic regions associated with field resistance. The severity of root rot was correlated with genotype survival, plant height, shoot yield, and fresh root yield. The genotypes were classified into five clusters based on resistance level, and the top 10 performing genotypes were selected as potential parents for breeding resistant progenies.
Article
Agronomy
Ravena Rocha Bessa de Carvalho, Massaine Bandeira E. Sousa, Luciana Alves de Oliveira, Eder Jorge de Oliveira
Summary: This study evaluated the genetic variability of cassava genotypes for carotenoid content and other root quality traits. It found that carotenoid content had high broad-sense heritability and was strongly correlated with pulp color. Selecting specific genotypes for breeding has the potential to increase yield, reduce cyanogenic compounds content, and improve dry matter content and root yield.
Article
Agronomy
Eder Jorge Oliveira, Saulo Alves Santos de Oliveira, Cinara Fernanda Garcia Morales, Marcos Roberto Silva, Marcos de Souza Campos, Manoel dos Santos Oliveira Filho
Summary: BRS Rendeira and BRS Progresso are new cassava cultivars that have tolerance to post-harvest deterioration and achieve high mean yields of fresh root (31.1 and 27.9 t/ha) and starch (8.9 and 8.1 t/ha) in annual production cycles, making them suitable for the flour and starch industry.
CROP BREEDING AND APPLIED BIOTECHNOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Thais Barbosa dos Santos, Carlos Wanderlei Piler de Carvalho, Luciana Alves de Oliveira, Eder Jorge de Oliveira, Flavia Villas-Boas, Celia Maria Landi Franco, Davy William Hidalgo Chavez
Summary: This study aimed to select cassava genotypes from the Brazilian germplasm bank with functionality similar to waxy starch. Two cassava genotypes, BGM0036 and BGM0083, were identified as having similar properties to waxy maize and cassava starches, making them potential alternatives for use in foods that require stability during freezing.
PESQUISA AGROPECUARIA BRASILEIRA
(2021)
Article
Plant Sciences
Jessica Hellen dos Santos Teixeira, Macelle Amanda Silva Guimaraes, Suane Coutinho Cardoso, Alexsandro dos Santos Brito, Rafael Parreira Diniz, Eder Jorge de Oliveira, Saulo Alves Santos de Oliveira
Summary: A study was conducted to evaluate the resistance of 83 Brazilian cassava genotypes to bacterial blight caused by Xanthomonas phaseoli pv. manihotis. The results showed that there was no complete resistance to the disease, with 16 genotypes classified as moderately resistant. The study also found no correlation between disease severity and agronomic performance in cassava genotypes.
TROPICAL PLANT PATHOLOGY
(2021)