39 documents found, page 1 of 4
Reciprocal recurrent selection for obtaining water-deficit tolerant maize progeny
Valadares,Fernanda Vargas; Almeida,Rafael Nunes de; Silva,Lázaro Renilton Emerick; Santos,Geferson Rocha; Pirovani,Raissa Olmo LacerdaABSTRACT: In view of the need to increase genetic variability to obtain materials with a significant capacity to drought tolerance, this study conducted a cycle of a reciprocal recurrent selection of full-sib families of maize. To this end, 64 full-sib families of maize were evaluated in two environments according to their morpho-agronomic data in a randomized block design with two replicates. It were analyzed ...
Combined selection for adaptability, genotypic stability and cowpea yield from ...
Cruz,Derivaldo Pureza da; Gravina,Geraldo de Amaral; Vivas,Marcelo; Entringer,Geovana Cremonini; Souza,Yure Pequeno de; Rocha,Richardson SalesABSTRACT: The potential expression of crop productivity is a constant challenge for plant breeders in the face of oscillations in environmental variables, making selection difficult and increasing the operational and methodological costs in obtaining the ideal cultivar for a determined region. The objective of the research was to investigate the effects of genotype x environment interaction in the selection of ...
Combining abilities analysis for ear rot resistance in popcorn hybrids development
Almeida,Rafael Nunes de; Vivas,Marcelo; Santos Junior,Divino Rosa dos; Saluci,Júlio Cesar Gradice; Carlos,Mayara Cazadini; Santos,Juliana SaltiresABSTRACT Ear rot caused by fungi of genus Fusarium (FER) is one of the potentially harmful diseases to grain quality in maize. Given the capacity to produce mycotoxins, FER presents a risk to food safety. This study sought to identify parents and indicate hybrids of popcorn with a higher level of resistance to the incidence and severity of FER. Hybrids were produced from the crossing of 15 lines in S7 generatio...
Distinctness, uniformity and stability and GT biplot tests for the selection of...
Sant’Anna,Camila QSS de; Oliveira,Tâmara Rebecca A de; Gravina,Geraldo de A; Cruz,Derivaldo P da; Gomes,Andrea BS; Daher,Rogério F; Vivas,MarceloABSTRACT The lack of records about snap bean cultivars is one of the obstacles that has led to a yield gap and low prominence of the crop. This work aimed at indicating snap bean lines obtained by the Breeding Program of the Universidade Estadual do Norte Fluminense (UENF) to assess their performance and to apply for a certificate of plant variety protection. The study was managed using a randomized block desig...
Performance of maize seedlings for baby corn production
Costa,Ariane C; Coelho,Fábio C; Garcia,Romário V; Lima,Wallace Luís de; Vivas,Marcelo; Prins,Cláudia L; Rocha,Jaídson G daABSTRACT Using maize seedlings for baby corn production can benefit farmers who have small areas under cultivation. The objective of this study was to evaluate the possibility of using maize seedlings for the production of baby corn. The experiment was carried out in field with four treatments (direct sowing in field; transplanting seedlings 10 days after sowing (DAS); 20 DAS and 30 DAS) in randomized blocks wi...
Corn genotypes and crop seasons on the rate of putative haploids with the expre...
Silva,Hingrid Ariane da; Scapim,Carlos Alberto; Vivas,Marcelo; Amaral Júnior,Antonio Teixeira; Pinto,Ronald José Barth; Vivas,Janieli Maganha SilvaAbstract: The objective of this work was to evaluate the influences of the factors corn (Zea mays) genotypes, crop seasons, endosperm texture, genetic background, and genetic basis on putative haploid rates (PHRs) according to the expression of gene R1-navajo (R1-nj). Forty-one corn genotypes were evaluated as pollen receptors, in crosses with the Krasnodar haploid inducer, in two crops (summer and winter), in ...
Reaction of popcorn lines (s7) cultivated in distinct phosphorus levels to Bipo...
Amaral Júnior,Antonio Teixeira do; Poltronieri,Tathianne Pastana de Sousa; Santos,Pedro Henrique Dias dos; Vivas,MarceloABSTRACT Popcorn culture is highly susceptible to helminthosporiosis (Bipolaris maydis) (h-Bm). The genetic breeding of this culture should prioritize resistance to h-Bm and develop cultivars that offer greater crop sustainability, especially in soils with phosphorus (P) scarcity. P-mineral is usually supplied to maize culture by the application of phosphate fertilizers, which are produced from mineral sources ...
Estimation of genetic merit of diallel hybrids of sweet pepper by mixed models
Chagas,José Tiago Barroso; Santos,Paulo Ricardo dos; Daher,Rogério; Stida,Wanessa Francesconi; Vidal,Ana Kesia; Nascimento,Maxwel RodriguesABSTRACT: The use of mixed models for evaluating diallel crosses is a highly timely option to the reliable prediction of progeny genetic values. In the sweet pepper crop, hybrids are commercially explored on a large scale, mainly because of their characteristics of economic importance. This study aimed to assess the potential of hybrids obtained from a partial diallel among five sweet pepper lines developed for...
Feijão vagem UENF Goytacá: uma nova opção para pequenos produtores
Sant’Anna,Camila QSS de; Gravina,Geraldo de A; Cruz,Derivaldo P da; Oliveira,Tâmara Rebecca A de; Gravina,Lília M; Gomes,Andrea BS; Entringer,Geovana CRESUMO A cultivar de feijão vagem UENF Goytacá, registrada no Ministério da Agricultura, Pecuário e Abastecimento, foi obtida após a geração F6 pelo método de melhoramento Single Seed Descent (SSD). Pertence ao Programa de Melhoramento de feijão vagem da UENF que consiste de mais de uma década de pesquisa com a cultura, objetivando a recomendação de cultivares para as regiões Norte e Noroeste Fluminense do Esta...
UC10: a new early Formosa papaya cultivar
Pereira,Messias Gonzaga; Luz,Lucas Nunes da; Santa-Catarina,Renato; Ramos,Helaine Christine Cancela; Pereira,Telma Nair SantanaAbstract UC10 is a new papaya cultivar, recommended to the southeast and northern regions of Brazil. It has a very good agronomic performance in and adaptation to these regions, with Formosa fruits of approximately 1.9 kg and yield of 260 t ha-1. The cultivar has early fruit production, and fruits have excellent flavor.