Untersuchungen an den Bastarden der ArtenNicotiana Sanderae, N. Langsdorfii undN. longiflora

Brieger, F. G.

doi:10.1007/bf01848934

Cited by 3 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…just as in asynaptic Datura (BERGNER, CARTLEDGE and BLAKESLEE, 1934) and Nicoliana (BRIEGER, 1934). A few apparent bivalents also occurred, which can be seen from the figures.…”

Section: Simple Casesmentioning

confidence: 63%

Cytogenetic Studies in Solanum, Sect. Tuberarium

Lamm¹

2010

Hereditas

View full text Add to dashboard Cite

“…just as in asynaptic Datura (BERGNER, CARTLEDGE and BLAKESLEE, 1934) and Nicoliana (BRIEGER, 1934). A few apparent bivalents also occurred, which can be seen from the figures.…”

Section: Simple Casesmentioning

confidence: 63%

Cytogenetic Studies in Solanum, Sect. Tuberarium

Lamm¹

2010

Hereditas

View full text Add to dashboard Cite

“…'Hybridurn,' therefore, has a mixed polygenic background from 2 distinct species and the result is disturbance of the action of the S locus. Similar disturbance of the S locus in Nicotiana (Brieger, 1930;East, 1932), Antirrhinum (Gruber, 1930) and Petunia (Tseng, 1938) may be attributed to the hybrid or inbred nature of material studied. Polygenic disturbance of incompatibility is, therefore, more likely to be conspicuous in those 'horticultural species' (cultivars) with histories of hybridization and inbreeding than in wild species collected from natural populations.…”

mentioning

confidence: 81%

“…Tseng (1938) found an epistatic fertility factor F in Antirrhinum majus, which was not allelomorphic to the S locus. In addition, Brieger (1930, in N. 'Sanderae'), Gruber (1930 and Tseng (1938, in Petunia hybrida) found one or more recessive modifiers which changed self-sterility into self-fertility, In these plants, the efficiency of this "recessive type of self-fertility" was dependent upon the general physiological action of modifiers which, in certain combinations, shifted it again to the "doubly recessive self-sterility" (Tseng, 1938).…”

mentioning

confidence: 99%

Incompatibility in Abutilon ‘Hybridum’

Pandey

1960

American J of Botany

View full text Add to dashboard Cite

Pandey, K. K. (John Innes Hort. Inst., Bayfordbury, Hertford, Herts, England.) Incompatibility in Abutilon ‘Hybridum.’ Amer. Jour. Bot. 47(10): 877–883. Illus. 1960.—Abutilon ‘Hybridum’ (2n = 16) has a one‐locus multiallelic gametophytic (Nicotiana‐type) system of self‐incompatibility. Five S alleles were distinguished among the 4 plants studied. However, the incompatibility behavior in many crosses is obscured by the modifying effects of a number of other genes non‐allelic to the S locus. Since A. ‘Hybridum’ is a cultivar which has arisen through hybridization of 2 or more Abutilon species, it is suggested that the mixed polygenic background of the “species” is not adjusted to the proper functioning of the S gene system. Although most of the plants in the 6 groups studied were highly self‐incompatible in the early and mid season, many of them showed pseudo‐self‐compatibility late in the season. Seed‐set in illegitimate crosses also increased late in the season. Colchicine‐induced autopolyploidy brought about part or full self‐compatibility. After incompatible pollination, pollen germination appeared to be normal but a considerable proportion of the tubes were inhibited in the stigmatic region of the style; tubes which penetrated the style usually burst between ⅕ and ⅓ of the distance from the stigma to the base, a phenomenon not found in any of the other gametophytic‐type species yet studied.

show abstract

“…A combinação I-G-do híbri-do contém ambos os pigmentos, roxo e verde, e apresenta uma coloração marron, muito comum em flores adaptadas à visita de moscas. (BRIEGER, 1930a(BRIEGER, , 1935a, Às vezes, os cruzamentos revelam uma pleiotropia da ação dos gens, anteriormente desconhecida. Podemos nos referir de novo ao caso do cruzamento mencionado no parágrafo anterior.…”

Section: B) Alterações Na Constituição Cromosômicaunclassified

“…Isto foi, por exemplo, demonstrado para a esterilidade interespecífica em RAPHANO-BRASSICA (Karpeshenko, 1928, Karpeshenko and Shchavinuskaia 1929) e em Nicotiana (BRIEGER, 1930a(BRIEGER, , 1930b.…”

Section: -A Seleçãounclassified

Considerações sobre o mecanismo da evolução

Brieger

1944

An. Esc. Super. Agric. Luiz de Queiroz

View full text Add to dashboard Cite

Nos últimos vinte anos podia-se notar uma mudança gradual nas discussões sobre o mecanismo da evolução. A razão principal consiste numa alteração dos métodos, pois as observações descritivas e comparativas, foram substituídas pelos experimentos exatos. A velha teoria da adaptação direta como resposta às necessidades, isto é, o Lamarckismo, perdeu com isso continuamente em seu valor, pois não foi possível achar qualquer comprovação experimental. A teoria fundamental de DARWIN, de outro lado, está definitivamente ganhando terre-

show abstract

Untersuchungen an den Bastarden der ArtenNicotiana Sanderae, N. Langsdorfii undN. longiflora

Cited by 3 publications

References 0 publications

Cytogenetic Studies in Solanum, Sect. Tuberarium

Cytogenetic Studies in Solanum, Sect. Tuberarium

Incompatibility in Abutilon ‘Hybridum’

Considerações sobre o mecanismo da evolução

Contact Info

Product

Resources

About