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| 18. |  | GIORDANO, L. de B.; FONTES, R. R.; ARAUJO, M. de T.; CARRIJO, O. A. Competicao de cultivares de tomateiro (Lycopersicon esculentum Mill) do tipo Santa Cruz. In: CONGRESSO DA SOCIEDADE DE OLERICULTURA DO BRASIL, 17., 1977, Juazeiro, BA. Anais. Brasilia: EMBRAPA-DID, 1979. p.187-188. Os anais foram publicados no v.7 da Revista de Olericultura., 1977.| Biblioteca(s): Embrapa Cerrados. |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
07/11/1997 |
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Data da última atualização: |
11/06/2018 |
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Autoria: |
GAMA, E. E. G. e; HALLAUER, A. R.; LOPES, M. A.; PARENTONI, S. N.; SANTOS, M. X. dos; GUIMARAES, P. E. O. |
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Afiliação: |
EMBRAPA/CNPMS; SIDNEY NETTO PARENTONI, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS. |
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Título: |
Combining ability among fifteen early cycle maize populations in Brazil. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Revista Brasileira de Genética, Ribeirão Preto, v. 18, n. 4, p. 569-577, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
Early maturity maize (Zea mays L.) populations are used in short growing seasons areas, and their use is gradually increasing in tropical areas. The objective of this study was to determine the genetic potential of 15 early maturity maize populations in a diallel crossing system. The 15 parents, 105 diallel crosses among parents, and selfed generation of parental were evaluated in a triple lattice design at 13 locations in Brazil. The combined analysis of variance for grain yield, time to tassel, and plant height indicated highly significant (P < 0.01) differences for entries, parents, heterosis, parent heterosis, specific heterosis and for the first-order interactions with environments. Average heterosis was highly significant for grain yield, significant(P < 0,05) for time to tassel, and not significant for plant height. Mean yield ranged from 3187 to 5213 kg/ha for populations, and ranged from 3041 to 6017 kg/ha for the population crosses. Population Pool 17 had the largest inbreeding depression effects, whereas population ACMS 52 had the smallest inbreeding depression effects. The highest specific cross for grain yield was for Across 8528 x Pool 18. None of the population crosses was superior to the hybrid checks for the three traits. No association was found between endosperm type and heterosis. The results suggest that either the population themselves or the synthetic composition of selected populations can be used for breeding purposes. |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Melhoramento; Milho; Zea Mays. |
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Thesaurus NAL: |
Brazil; breeding. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38342/1/Combining-ability.pdf
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Marc: |
LEADER 02184naa a2200253 a 4500
001 1477190
005 2018-06-11
008 1995 bl uuuu u00u1 u #d
100 1 $aGAMA, E. E. G. e
245 $aCombining ability among fifteen early cycle maize populations in Brazil.$h[electronic resource]
260 $c1995
520 $aEarly maturity maize (Zea mays L.) populations are used in short growing seasons areas, and their use is gradually increasing in tropical areas. The objective of this study was to determine the genetic potential of 15 early maturity maize populations in a diallel crossing system. The 15 parents, 105 diallel crosses among parents, and selfed generation of parental were evaluated in a triple lattice design at 13 locations in Brazil. The combined analysis of variance for grain yield, time to tassel, and plant height indicated highly significant (P < 0.01) differences for entries, parents, heterosis, parent heterosis, specific heterosis and for the first-order interactions with environments. Average heterosis was highly significant for grain yield, significant(P < 0,05) for time to tassel, and not significant for plant height. Mean yield ranged from 3187 to 5213 kg/ha for populations, and ranged from 3041 to 6017 kg/ha for the population crosses. Population Pool 17 had the largest inbreeding depression effects, whereas population ACMS 52 had the smallest inbreeding depression effects. The highest specific cross for grain yield was for Across 8528 x Pool 18. None of the population crosses was superior to the hybrid checks for the three traits. No association was found between endosperm type and heterosis. The results suggest that either the population themselves or the synthetic composition of selected populations can be used for breeding purposes.
650 $aBrazil
650 $abreeding
650 $aMelhoramento
650 $aMilho
650 $aZea Mays
653 $aBrasil
700 1 $aHALLAUER, A. R.
700 1 $aLOPES, M. A.
700 1 $aPARENTONI, S. N.
700 1 $aSANTOS, M. X. dos
700 1 $aGUIMARAES, P. E. O.
773 $tRevista Brasileira de Genética, Ribeirão Preto$gv. 18, n. 4, p. 569-577, 1995.
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