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| Azevedo,Alcinei M; Andrade Júnior,Valter C; Sousa Júnior,Aderbal S; Santos,Albertir A; Cruz,Cosme D; Pereira,Samuel L; Oliveira,Altino JM. |
| RESUMO A estimativa da área foliar na couve é importante, pois medidas diretas são difíceis e imprecisas, devido ao tamanho da folha, a irregularidade da superfície foliar de alguns genótipos, a necessidade de equipamentos caros e de muita mão-de-obra. Objetivou-se verificar a eficiência da estimação da área foliar de couve por meio de RNAs e constatar a eficiência desta estratégia em comparação com o uso da área foliar observada. O experimento foi conduzido em delineamento de blocos casualizados com três repetições, 22 acessos e quatro plantas por parcela. Desenvolveram-se perceptrons de multicamadas utilizando 50 folhas por acesso, destinando-se 70% para treinamento, 15% para a validação cruzada (early-stop) e 15% para teste. Foram testadas 39... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. acephala; Perceptron de multicamadas; Seleção indireta; Inteligência computacional.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000100014 |
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| Andrade Júnior,Valter C; Oliveira,Altino JM; Guimarães,Amanda G; Ferreira,Marcos Aurélio M; Cavalcanti,Vytória P; Fernandes,José Sebastião C. |
| ABSTRACT The estimation of repeatability coefficient provides support to define the number and the appropriate period of genotype evaluations, obtaining better success in breeding programs, in order to lower labor costs. Therefore, knowing repeatability and heritability parameters is relevant. Thus, the aim of this study was to estimate the repeatability and heritability coefficients and accurately determine the number of measurements. Eight strawberry cultivars were analyzed in a randomized block design with four replicates and eighteen plants per plot, being harvested twice a week over a period of six months (May to October, 2012), totalizing six evaluations. Among the evaluated traits, the estimated heritabilities ranged from 3.13% (number of fruits) to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Genetic breeding; Number of measurements. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100089 |
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| Ferreira,Marcos Aurélio M; Andrade Junior,Valter C; Oliveira,Altino JM; Ferreira,Evander A; Brito,Orlando G; Silva,Lidiane R. |
| ABSTRACT This research was installed to study plant growth of sweet potato and identify the most favorable harvest time for both roots and the aboveground part (stems). The experiment was carried out at the JK campus of the Federal University of the Vale do Jequitinhonha e Mucuri, in Diamantina, MG, complete blocks at random, with four replications. Three plants in the central part of the experimental plots were collected in twelve consecutive harvests at 15-day intervals. Plants were fractionated in roots, stems, and leaves to determine the dry matter of each part. Leaf area was also measured and growth rates were calculated. Data were analyzed by means of regression. Plants reached the highest dry matter accumulation between 75 and 156 days after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomoea batatas; Physiological indexes; Human diet; Animal feeding; Harvest time. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100112 |
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