Estabilidade da produção forrageira em clones de capim-elefante (Pennisetum purpureum Schum.)

Daher, Rogério Figueiredo; Pereira, Messias Gonzaga; Júnior, Antônio Teixeira do Amaral; Pereira, Antônio Vander; Lédo, Francisco José da Silva; Daros, Máskio

doi:10.1590/s1413-70542003000400007

Cited by 12 publications

(20 citation statements)

References 4 publications

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“…Table 4 shows that genotype 47 is the most adaptable and stable, with the lowest P i value in the six cuts, followed by genotypes 31,11,44,65,32,54,7,46, and 45, with respective increases in dry matter yield. These results agree with Daher et al (2003), who found an inverse relationship between the stability parameter P i and the clones' drymatter-yield means, indicating the applicability of these stability estimates for the evaluation of perennial-cycle …”

Section: Resultssupporting

confidence: 90%

“…This ratio is in agreement with Daher et al (2003), who evaluated P. penissetum in eight environments whose ratio of homogeneity of variances (Hartley's test) was 4.94, which allowed the inclusion of all environments in the combined analysis.…”

Section: Resultssupporting

confidence: 89%

“…The genotype × environment interaction is unfavorable to researchers' work because of the magnitudes of differences between the genotypes and cuts, and so the classification of the genotypes is changed with the cuts (Daher et al, 2003). Thus, a more detailed study of the performance of genotypes in view of these variations was undertaken by stability analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Daher et al (2003), who evaluated 17 clones of elephant grass for forage production, stated that the stability estimates of Plaisted and Peterson also proved that there was no agreement between stability and productivity; in other words, the most productive genotypes were not necessarily the most stable ones.…”

Section: Resultsmentioning

confidence: 99%

“…The ability of this parameter to detect the genotypic behavior of clones is based on the use of deviations between the evaluated genotype and the maximum productivity in each environment. Thus, low P i values for a given genotype demonstrate that it was near the maximum in the cuts made (Daher et al, 2003).…”

Section: P Smentioning

confidence: 98%

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Comparison of stability methods in elephant-grass genotypes for energy purposes

Rocha¹,

Daher²,

Gravina³

et al. 2015

Afr. J. Agric. Res.

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Elephant grass is a plant of tropical origin with high biomass-production potential that stands out today as an alternative energy source. The potential of its genotypes depends on the genotype × environment interaction. The objective of this study was to estimate the genotype × environment interaction and compare stability methods in elephant grass for biomass production in a biannual cutting regime. The experiment was conducted in a randomized block design with two replicates and evaluations of 73 elephant-grass genotypes in six cuts. The trait dry matter yield was utilized for the analysis of the genotype × environment interaction and the stability. The stability analysis methods employed were those of Yates and Cochran, Plaisted and Peterson, Wricke, Annicchiarico, Lin and Binns, and Huehn. Kang and Phan's ranking was adopted for all the methods. Spearman's coefficient was utilized to evaluate the degree of agreement between the different methods employed. Significant differences were observed for the genotype × environment interaction. Non-parametric Lin and Binns' and Annicchiarico's methods were more discriminating than the analysis of variance methods in the evaluation of stability and productivity of the tested genotypes.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: P Smentioning

confidence: 98%

See 3 more Smart Citations

Comparison of stability methods in elephant-grass genotypes for energy purposes

Rocha¹,

Daher²,

Gravina³

et al. 2015

Afr. J. Agric. Res.

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Seleção de genótipos de soja para ampla adaptabilidade e alta estabilidade fenotípica

Oliveira¹

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A Deus, por estar sempre comigo, me guiando, iluminando meus passos e me carregando nos caminhos pedregosos. Obrigada, Senhor, por todos esses dias vividos e pelos que virão.Um agradecimento especial a nossa senhora Aparecida, que com seu abençoado manto sempre me cobriu, me protegendo e acalmando meu coração.Aos meus pais, Lorezino Martins Ferreira e Maria do Carmo de Oliveira, "razão da minha vida, minha força e dedicação". Pelos seus longos anos de experiência, dedicação, humildade e sabedoria, que me tornaram o que sou hoje. Os ensinamentos são a maior riqueza que alguém pode ganhar; e levarei esses ensinamentos para toda a minha vida e nunca ninguém vai tirá-los de mim.Ao meu esposo, Flávio Marçal dos Santos, por ter me escolhido para participar de sua vida, pelo incentivo de iniciar e concretizar esta etapa em minha vida, pela sua paciência, companheirismo, amor e pela compreensão de entender minha ausência em muitos momentos do nosso namoro e casamento. É claro, pela disponibilidade em me ajudar sempre que precisei em todas as etapas do meu mestrado.Ao meu irmão Laudinely Martins de Oliveira e à minha cunhada Heloisa Cunali, pelo incentivo constante, por acreditar que eu seria capaz e por todas as palavras de conforto.À minha irmã, Laudirene Martins de Oliveira, e ao meu cunhado, Cid Marcos, pelo incentivo e por me acolherem em sua casa quando iniciei meu estudo.Ao meu irmão Waldemar Martins de Oliveira Neto e à minha cunhada Alda Palestina, por sempre me ajudarem quando precisei. E aos meus sobrinhos, Henrique e Bianca, por proporcionarem muitos momentos alegres. Não poderei deixar de agradecer ao professor doutor Osvaldo ToshiyukiHamawaki, meu orientador, pela confiança no meu trabalho e pela oportunidade de crescimento profissional e pessoal. E ainda pela grande oportunidade que me proporcionou: conhecer, e me apaixonar, pelo melhoramento genético de plantas.Obrigada, professor Osvaldo! Por me proporcionar adquirir conhecimento nesta maravilhosa área: essencial ao nosso agronegócio.Ao meu sogro, Carlito Marçal, à minha sogra, Marina, e ao meu cunhado Carlito Júnior, pelo carinho e pela torcida. v A todos os meus familiares (tios, tias e primos) e amigos, pela atenção, pelos conselhos e pela torcida. Em especial, à minha amiga Larissa Barbosa de Sousa, por sua incansável paciência e experiência; muitas vezes, me aconselhando, dividindo comigo seus conhecimentos. Agradeço a possibilidade de trabalharmos juntas, pelo aprendizado adquirido. Obrigada, Larissaou melhor, professora Larissa -, por contribuir muito com este trabalho, por me escutar sempre que precisei desabafar. Continue sempre assim! À professora Ana Paula Oliveira Nogueira, pelo conhecimento transmitido e pela coorientação deste trabalho, disponibilizando sua poucas horas para me ajudar.Obrigada, Ana Paula, pela amizade que construímos e por compor a banca de defesa da dissertação.À doutora Flávia Aparecida Amorim, por ter aceitado o convite para participar da banca de defesa e contribuir para melhoria deste trabalho.A Fernanda Neves Romanato,...

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Different Stability Methods for Cultivar Recommendation in Elephant-Grass for Energy Purposes in Brazil

Silva

Daher

Menezes

et al. 2017

CERNE

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The elephant-grass undergoes successive cutting and periodical evaluations that it possible to identify clones with high stability for dry matter production, which can be used for energy production. The present study was carried out to evaluate stability dry matter yield for different parametric and non-parametric methods in elephant grass genotypes for biomass production undergoes successive cutting in the agroclimatic conditions of the Norte Fluminense (RJ, Brazil). The variable measured in the 40 genotypes was dry matter yield (DMY) at 2009, 2010 and 2011 in a field study designed as randomized block design with two replicates. Each sample was grown in different environment condition. The stability methods tested were the Yates and Cochran’s, Plaisted and Peterson’s, Wricke’s ecovalence, Annicchiarico’s, Lin and Binns’ and Kang and Phan’s. Results indicated that cutting (E) and genotypes (G) influenced significantly on the performance of dry matter yield. The non-parametric stability methods were effective for the evaluation of stability in dry matter yield. Genotypes Mercker, Pinda-México, Mercker 86-México, Guaçu/IZ, Mercker Pinda, P-241-Piracicaba and Cubano Pinda were stable stability dry matter yield. Hence, there are genotypes may be exploited in future breeding programmes in order to improve productivity of upland elephant grass over environment.

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Estabilidade da produção forrageira em clones de capim-elefante (Pennisetum purpureum Schum.)

Cited by 12 publications

References 4 publications

Comparison of stability methods in elephant-grass genotypes for energy purposes

Comparison of stability methods in elephant-grass genotypes for energy purposes

Seleção de genótipos de soja para ampla adaptabilidade e alta estabilidade fenotípica

Different Stability Methods for Cultivar Recommendation in Elephant-Grass for Energy Purposes in Brazil

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