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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
19/10/2004 |
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Data da última atualização: |
30/03/2010 |
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Autoria: |
BRESSIANI, J. A.; BURNQUIST, W. L.; FUZATTO, S. R.; BONATO, A. L.; GERALDI, I. O. |
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Título: |
Combining ability in eight selected clones of sugarcane (Saccharum sp). |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 411-416, Sept. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Eight commercial sugarcane (Saccharum sp) clones were crossed in a full diallel. Five characters were evaluated in the progeny in one or two harvests Refractometer solids (Brix %), Yield (tons of cane per hectare, TCH), number of millable stalks, reaction to rust (Puccinia melanocephala) and pithiness. A sixth character, Brix yield (TBH) was calculed from TCH and Brix %. The eight parental clones were treated as fixed variables in the analysis. General combining ability (GCA) was significant for all 6 characters (p<0.01) and specific combining ability (SCA) was significant for Brix %, TCH, TBH and rust reaction in plant cane. The ratio between GCA and SCA was greater than 0.60, for all variables expect for TBH in plant cane, indicating the predominance of GCA effects. The selection of high GCA parents for subsequent intercrossing in order to explore SCA is recommended, but some high value SCA combinations may be lost. |
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Palavras-Chave: |
Cana-de-açúcar; Parental evaluation. |
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Thesaurus Nal: |
diallel analysis; general combining ability; specific combining ability; sugarcane. |
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Categoria do assunto: |
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Marc: |
LEADER 01655naa a2200241 a 4500
001 1212604
005 2010-03-30
008 2002 bl uuuu u00u1 u #d
100 1 $aBRESSIANI, J. A.
245 $aCombining ability in eight selected clones of sugarcane (Saccharum sp).
260 $c2002
520 $aEight commercial sugarcane (Saccharum sp) clones were crossed in a full diallel. Five characters were evaluated in the progeny in one or two harvests Refractometer solids (Brix %), Yield (tons of cane per hectare, TCH), number of millable stalks, reaction to rust (Puccinia melanocephala) and pithiness. A sixth character, Brix yield (TBH) was calculed from TCH and Brix %. The eight parental clones were treated as fixed variables in the analysis. General combining ability (GCA) was significant for all 6 characters (p<0.01) and specific combining ability (SCA) was significant for Brix %, TCH, TBH and rust reaction in plant cane. The ratio between GCA and SCA was greater than 0.60, for all variables expect for TBH in plant cane, indicating the predominance of GCA effects. The selection of high GCA parents for subsequent intercrossing in order to explore SCA is recommended, but some high value SCA combinations may be lost.
650 $adiallel analysis
650 $ageneral combining ability
650 $aspecific combining ability
650 $asugarcane
653 $aCana-de-açúcar
653 $aParental evaluation
700 1 $aBURNQUIST, W. L.
700 1 $aFUZATTO, S. R.
700 1 $aBONATO, A. L.
700 1 $aGERALDI, I. O.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 3, p. 411-416, Sept. 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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