Caracterização e diversidade genética do capim-elefante e seus híbridos com milheto mediante padrões isoenzimáticos

Freitas, Nara Suzy Aguiar de; Falcão, Tânia Maria Muniz De Arruda; Burity, Hélio Almeida; Tabosa, J. N.; Silva, Márcia Vanusa da

doi:10.1590/s0100-204x2000000600008

Cited by 8 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Um dos maiores problemas na caracterização desses materiais é a identificação segura dos clones (Freitas et al, 2000) e para isso têm-se utilizado descritores morfológicos (Shimoya et al, 2002;Silva et al, 2008a;Silva et al, 2008b;Silva et al, 2009).…”

Section: Introductionunclassified

Variabilidade e herdabilidade de caracteres morfológicos em clones de capim-elefante na Zona da Mata de Pernambuco

Silva¹,

Santos

Júnior

et al. 2010

R. Bras. Zootec.

View full text Add to dashboard Cite

RESUMO -Esta pesquisa foi realizada para avaliar a variabilidade e herdabilidade de caracteres morfológicos de 54 clones de capim-elefante na Zona da Mata de Pernambuco (três testemunhas locais e os demais provenientes da RENACE/CNPGL).Utilizou-se delineamento em blocos casualizados com testemunhas adicionais. Foram realizados três cortes de avaliação aos 60 dias de crescimento. Houve diferenças significativas para diâmetro de colmo, densidade de perfilhos basais e aéreos, largura da folha 3, comprimento da folha 5, porcentagem de lâminas foliares, porcentagem de colmo e relação lâmina foliar/colmo.Os clones da RENACE são semelhantes aos tradicionalmente cultivados nas condições da Zona da Mata de Pernambuco quanto à maioria dos caracteres morfológicos. A cultivar Pioneiro floresceu precocemente nas condições ambientais deste estudo. As características número de perfilhos basais e aéreos/metro apresentaram alta herdabilidade, o que evidenciando pouca influência do ambiente na variabilidade entre clones. Considerando a variabilidade entre os clones da RENACE para número de perfilhos basais e aéreos/metro e relação folha/colmo e a alta herdabilidade desses caracteres, é possível obter ganhos genéticos para essas características no melhoramento do capim-elefante na região da Zona da Mata de Pernambuco.Palavras-chave: capim-elefante, gramínea, morfologia, Pennisetum purpureum, perfilhamento Variability and heritability of morphologic characters in elephant grass clones in the Forest Zone in PernambucoABSTRACT -This research was carried out at to evaluate the variability and heritability of morphologic traits in 54 elephant grass clones (three local controls and 51 from the RENACE/CNPGL) in the Forest Zone in Pernambuco. It was used a complete randomized block design with additional controls. Three cuts were performed on the 60 th day of regrowth.There were significant differences for stem diameter, basal and aerial tillers density, width of leaf 3, length of leaf 5, leaf blade percentage, stem percentage, and leaf/stem ratio. Clones of RENACE are similar to the ones traditionally cultivated in the conditions of Forest Zone in Pernambuco regarded to morphological characters. Cultivar Pioneiro showed early flourishing in the environmental conditions of this study. Number of basal and aerial/metter tillers showed good heritability, evidencing little influence of the environment on variability among the clones. Considering the variability among RENACE clones for basal and aerial tillers/m and leaf/stem ratio and the high heritability of these characters, it is possible to obtain genetic gains for these traits in the elephant grass breeding program in the Forest Zone in Pernambuco.

show abstract

Section: Introductionunclassified

Variabilidade e herdabilidade de caracteres morfológicos em clones de capim-elefante na Zona da Mata de Pernambuco

Silva¹,

Santos

Júnior

et al. 2010

R. Bras. Zootec.

View full text Add to dashboard Cite

show abstract

“…Freitas et al (2000), in their study, observed polymorphism in the patterns of the enzymes EST, ADH, GOT, peroxidase, leucine aminopeptides, and acid phosphatase using young leaves of millet and elephant grass accessions. The differentiated expression of enzymes in different plant tissues and organs is expected, which may justify the results observed in these studies.…”

Section: Enzymatic Systemsmentioning

confidence: 93%

Identification of earl millet cultivars using both microsatellites and enzymatic markers

Neto¹,

Pinho²,

Carvalho³

et al. 2013

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. The increasing number of protected and registered cultivars and problems involving seed commercialization make distinction and identification of cultivars imperative. Millet (Pennisetum glaucum), a crop species with protected cultivars in Brazil, has been the target of seed piracy. Thus, with the objective of identifying different lots with regard to origin, we characterized six cultivars of commercialized millet of proven origin by means of the electrophoretic patterns of the isoenzymes alcohol dehydrogenase, esterase and glutamate oxaloacetate transaminase and by microsatellite markers, using primers specific for millet. The six cultivars were separated with four microsatellite loci. Based on this characterization, certification of genetic purity was undertaken for public domain commercialized seed lots. The isoenzymatic markers were also tested for stability of the patterns. Esterase patterns were altered in seeds with different physiological quality and health conditions, but this alteration did not hinder identification of the cultivars. It was observed that most of the millet seed lots commercialized in Brazil as being in public domain belong to other cultivars.

show abstract

“…When a set of traits represents qualitatively different variables and there is no correlation between them, univariate analysis is the most appropriate procedure to apply; however, when a dataset displays variables that are correlated, multinormality should be assumed, and a multivariate analysis of variance should be performed (Freitas et al, 2000).…”

Section: Multivariate Analysismentioning

confidence: 99%

Selection of Elephant-Grass Genotypes for Forage Production

Schneider¹,

Daher²,

Menezes³

et al. 2018

JAS

View full text Add to dashboard Cite

The objective of this study was to evaluate the agronomic traits of 80 accessions of elephant grass under the soil and weather conditions of Campos dos Goytacazes/RJ, Brazil. The experimental design was set as randomized blocks with 2 replicates. The experiment continued from March 2012 to May 2013, with 5 harvests made in the dry and rainy seasons. The following traits were assessed: percentage of dry matter (%DM), dry matter yield (DMY), number of tillers per meter (NT), plant height (HGT), stem diameter (SD), leaf blade width (LBW) and leaf blade length (LBL). Data from each harvest were subjected to analysis of variance and to the Scott-Knott test (P < 0.05). Tocher’s optimization method, Mahalanobis distance, and canonical variables were utilized for the multiple traits, and the importance of the characters in the canonical variables. Genotypes with high yield were Elefante da Colômbia, Taiwan A-25, Albano, Hib. Gigante da Colômbia, Elefante de Pinda, Taiwan A-121, P241 Piracicaba, Guaçu/I.Z.2, CPAC, EMPASC 309, EMPASC 307, Australiano, and Pasto Panamá. Stem diameter (rainy season) and LBW (dry season) were the most important variables to differentiate between genotypes. There was wide phenotypic variation between genotypes, which could be divided into 15 groups by Tocher’s optimization method.

show abstract

Caracterização e diversidade genética do capim-elefante e seus híbridos com milheto mediante padrões isoenzimáticos

Cited by 8 publications

References 11 publications

Variabilidade e herdabilidade de caracteres morfológicos em clones de capim-elefante na Zona da Mata de Pernambuco

Variabilidade e herdabilidade de caracteres morfológicos em clones de capim-elefante na Zona da Mata de Pernambuco

Identification of earl millet cultivars using both microsatellites and enzymatic markers

Selection of Elephant-Grass Genotypes for Forage Production

Contact Info

Product

Resources

About