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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
28/01/2019 |
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Autoria: |
LI, H. W.; PAO, W. K.; LI, C. H. |
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Título: |
Desynapsis in the common wheat. |
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Ano de publicação: |
1945 |
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Fonte/Imprenta: |
American Journal of Botany, v. 32, n. 2, p. 92-101, 1945. |
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DOI: |
DOI: 10.2307/2437115 |
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Idioma: |
Inglês |
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Conteúdo: |
1. Meiosis in desynaptic plants which arose following a varietal cross is described in detail. 2. Synapsis occurs in an apparently normal fashion in all of the plants. In some of the desynaptic plants the chromosomes fall apart in pachytene; in other plants they fall apart in diplotene. 3. Chiasmata in the desynaptic plants are mostly terminal at metaphase; rarely some are interstitial. Sometimes, the bivalents are unequal, suggesting the pairing of chromosomes not completely homologous. 4. Desynapsis is a simple Mendelian recessive character and its gene is designated by the symbol ds. It evidently arose as a spontaneous mutation after the original varietal cross. 5. There are stable and unstable types of desynapsis which are possibly controlled by modifying genes. 6. The mean bivalent frequency of the unstable type of desynaptic plants may show variation in relation to temperature. 7. The fertility of desynaptic plants is significantly lower than that of normal plants, but it shows considerable variation. |
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Thesagro: |
Citologia; Trigo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01473naa a2200181 a 4500
001 1834202
005 2019-01-28
008 1945 bl --- 0-- u #d
024 7 $aDOI: 10.2307/2437115$2DOI
100 1 $aLI, H. W.
245 $aDesynapsis in the common wheat.
260 $c1945
520 $a1. Meiosis in desynaptic plants which arose following a varietal cross is described in detail. 2. Synapsis occurs in an apparently normal fashion in all of the plants. In some of the desynaptic plants the chromosomes fall apart in pachytene; in other plants they fall apart in diplotene. 3. Chiasmata in the desynaptic plants are mostly terminal at metaphase; rarely some are interstitial. Sometimes, the bivalents are unequal, suggesting the pairing of chromosomes not completely homologous. 4. Desynapsis is a simple Mendelian recessive character and its gene is designated by the symbol ds. It evidently arose as a spontaneous mutation after the original varietal cross. 5. There are stable and unstable types of desynapsis which are possibly controlled by modifying genes. 6. The mean bivalent frequency of the unstable type of desynaptic plants may show variation in relation to temperature. 7. The fertility of desynaptic plants is significantly lower than that of normal plants, but it shows considerable variation.
650 $aCitologia
650 $aTrigo
700 1 $aPAO, W. K.
700 1 $aLI, C. H.
773 $tAmerican Journal of Botany$gv. 32, n. 2, p. 92-101, 1945.
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| 1. |  | PFEIFER, L. F. M.; ANDRADE, J. de S.; MOREIRA, E. M.; SILVA, R. R. da; NEVES, P. M. A.; SILVA, G. M. da S.; LEMOS, I. C.; SCHNEIDER, A. Uterine inflammation and fertility of beef cows subjected to timed AI at different days postpartum. Animal Reproduction Science, v. 197, p. 268-277, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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