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 | Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
30/10/2003 |
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Data da última atualização: |
26/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BUSO, J. A.; BOITEUX, L. S.; PELOQUIN, S. J.; SALAMINI, F. |
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Afiliação: |
JOSE AMAURI BUSO, CNPH; LEONARDO SILVA BOITEUX, CNPH; S. J. PELOQUIN, UNIVERSITY OF WISCONSIN-MADISON; F. SALAMINI. |
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Título: |
Tuber yield and quality of 4x-2x (FDR) potato progenies derived from the wild diploid species Solanum berthaultii and Solanum tarijense. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Plant Breeding, v. 122, p. 229-232, 2003. |
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ISSN: |
1439-0523 |
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DOI: |
https://doi.org/10.1046/j.1439-0523.2003.00815.x |
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Idioma: |
Inglês |
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Conteúdo: |
Field experiments were carried out in order to evaluate 4x-2x families derived from crosses between elite 4x potato cultivars and 2x Tuberosum-Solanum tarijense and 2x Tuberosum-Solanum berthaultii clones. Three traits were assessed: total tuber yield (TTY), haulm maturity (HM) and general tuber appearance (GTA). The degree of heterosis of these hybrid families was evaluated by comparison with the respective 2x and 4x parents as well as with seven 4x cultivars. The parental haploid species hybrids derived from S. berthaultii and S. tarijense combined two or more positive horticultural characteristics. Expressed as yield percentage of the 4x parents, the TTY of the families ranged from 53% to 246%. For TTY, the best 4x-2x hybrid family ranked better than seven out of nine elite 4x cultivars. Some families had GTA scores in the range of the highly selected 4x cultivars. The families, however, were generally later maturing than the 4x parent group. Specific combining ability for TTY and GTA were the only two significant sources of variation observed in this genetic material. Parent-offspring correlation coefficients were low for all traits, and indicated that parental performance would not be informative at either ploidy level. These results parallel previous investigations with distinct haploid species hybrids where a 4x-2x breeding scheme was found to be an effective strategy for increasing progeny TTY over the 4x parents. However, the high degree of heterosis for TTY along with good GTA scores observed in certain cross combinations derived from these unadapted 2x species was a somewhat surprising result. Thus far, the importance of these two South American wild potato species, from the potato-breeding standpoint, has been limited to the fact that they are natural reservoirs of major genes controlling resistance against important diseases and insects. However, the level of performance of some 4x-2x families in comparative assays with elite cultivars suggests the unanticipated possibility of introgressing genetic factors from S. berthaultii and S. tarijense with positive effects on quantitative traits of horticultural importance along with these major resistance genes. MenosField experiments were carried out in order to evaluate 4x-2x families derived from crosses between elite 4x potato cultivars and 2x Tuberosum-Solanum tarijense and 2x Tuberosum-Solanum berthaultii clones. Three traits were assessed: total tuber yield (TTY), haulm maturity (HM) and general tuber appearance (GTA). The degree of heterosis of these hybrid families was evaluated by comparison with the respective 2x and 4x parents as well as with seven 4x cultivars. The parental haploid species hybrids derived from S. berthaultii and S. tarijense combined two or more positive horticultural characteristics. Expressed as yield percentage of the 4x parents, the TTY of the families ranged from 53% to 246%. For TTY, the best 4x-2x hybrid family ranked better than seven out of nine elite 4x cultivars. Some families had GTA scores in the range of the highly selected 4x cultivars. The families, however, were generally later maturing than the 4x parent group. Specific combining ability for TTY and GTA were the only two significant sources of variation observed in this genetic material. Parent-offspring correlation coefficients were low for all traits, and indicated that parental performance would not be informative at either ploidy level. These results parallel previous investigations with distinct haploid species hybrids where a 4x-2x breeding scheme was found to be an effective strategy for increasing progeny TTY over the 4x parents. However, the high degree of heterosis for TTY along w... Mostrar Tudo |
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Palavras-Chave: |
Poliploidização; Solanum tarijense. |
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Thesagro: |
Batata; Cruzamento; Melhoramento; Produtividade; Progênie. |
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Thesaurus Nal: |
Solanum berthaultii. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03054naa a2200277 a 4500
001 1774853
005 2024-01-26
008 2003 bl uuuu u00u1 u #d
022 $a1439-0523
024 7 $ahttps://doi.org/10.1046/j.1439-0523.2003.00815.x$2DOI
100 1 $aBUSO, J. A.
245 $aTuber yield and quality of 4x-2x (FDR) potato progenies derived from the wild diploid species Solanum berthaultii and Solanum tarijense.$h[electronic resource]
260 $c2003
520 $aField experiments were carried out in order to evaluate 4x-2x families derived from crosses between elite 4x potato cultivars and 2x Tuberosum-Solanum tarijense and 2x Tuberosum-Solanum berthaultii clones. Three traits were assessed: total tuber yield (TTY), haulm maturity (HM) and general tuber appearance (GTA). The degree of heterosis of these hybrid families was evaluated by comparison with the respective 2x and 4x parents as well as with seven 4x cultivars. The parental haploid species hybrids derived from S. berthaultii and S. tarijense combined two or more positive horticultural characteristics. Expressed as yield percentage of the 4x parents, the TTY of the families ranged from 53% to 246%. For TTY, the best 4x-2x hybrid family ranked better than seven out of nine elite 4x cultivars. Some families had GTA scores in the range of the highly selected 4x cultivars. The families, however, were generally later maturing than the 4x parent group. Specific combining ability for TTY and GTA were the only two significant sources of variation observed in this genetic material. Parent-offspring correlation coefficients were low for all traits, and indicated that parental performance would not be informative at either ploidy level. These results parallel previous investigations with distinct haploid species hybrids where a 4x-2x breeding scheme was found to be an effective strategy for increasing progeny TTY over the 4x parents. However, the high degree of heterosis for TTY along with good GTA scores observed in certain cross combinations derived from these unadapted 2x species was a somewhat surprising result. Thus far, the importance of these two South American wild potato species, from the potato-breeding standpoint, has been limited to the fact that they are natural reservoirs of major genes controlling resistance against important diseases and insects. However, the level of performance of some 4x-2x families in comparative assays with elite cultivars suggests the unanticipated possibility of introgressing genetic factors from S. berthaultii and S. tarijense with positive effects on quantitative traits of horticultural importance along with these major resistance genes.
650 $aSolanum berthaultii
650 $aBatata
650 $aCruzamento
650 $aMelhoramento
650 $aProdutividade
650 $aProgênie
653 $aPoliploidização
653 $aSolanum tarijense
700 1 $aBOITEUX, L. S.
700 1 $aPELOQUIN, S. J.
700 1 $aSALAMINI, F.
773 $tPlant Breeding$gv. 122, p. 229-232, 2003.
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