Genic sterility inTabacum-like amphidiploids ofNicotiana

Greenleaf, Walter H.

doi:10.1007/bf02982747

Cited by 20 publications

(6 citation statements)

References 10 publications

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“…It may be said that in Series Sativa F1 sterility is developed and F1 weakness is sporadical, while in Series Glaberrima F1 sterility is sporadical and F1 weakness prevails. Davis 1955;Greenleaf 1942;Hall et al 1966;Rick 1966;etc.). We have observed the percentages of anatomically normal embryosacs in the F1 plants of 89 crosses between different taxa.…”

Section: F1 Pollen Sterilitymentioning

confidence: 99%

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Chu

Morishima

Oka

1969

The Japanese journal of genetics

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The plant group dealt with in this paper comprises two cultivated species, Oryza sativa L, and 0. glaberrima Steud. and their respective wild relatives, 0. perennis Moench and 0. breviligulata Chev. et Roehr. On circumstantial evidence, sativa must have arisen from the Asian form of perennis (Oka and Chang 1962;Oka 1964a), and glaberrima from breviligulata independently of sativa (Morishima et al. 1963). 0. glaberrima and 0. breviligulata (Series Glaberrima) are endemic to West Africa, while 0. sativa and 0.

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Section: F1 Pollen Sterilitymentioning

confidence: 99%

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Chu

Morishima

Oka

1969

The Japanese journal of genetics

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“…Alternatively, Kostoff's method of obtaining the amphidiploid may lead to gene duplication and deficiency in the homologous chromosomes of the tomentosi-[ormis and sylvestris genomes. On this basis, Greenleaf (1942) hypothesized the female fertility of Kostoff's amphidiploid as a result of elimination of complementary genes for abortive embryo-sac development. Similarly, a loss of gene loci due to chromosomal interchanges in the F 1 hybrid may result in a complete resemblance to N. tabacum for isozyme patterns in the corresponding amphidiploid.…”

Section: Discussionmentioning

confidence: 99%

“…However, some morphological features of the amphidiploids resembled the hybrids of aN. Greenleaf (1942) produced similar amphidiploid from callus of the F 1 hybrid. In contrast to Kostoff's amphidiploid which was self-fertile, the callus-induced one was completely female sterile but highly male fertile.…”

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confidence: 99%

ISOZYMIC EVIDENCE BEARING ON THE ORIGIN OFNICOTIANA TABACUML.

Sheen

1972

Evolution

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“…On the other hand, the embryo having YYYW (SSST) or YYWW (SSTT), which will have white flowers, may become abortive due to heterozygosity of S Tgenes. GREENLEAF (1942) postulated that the female sterility of several amphidiploids in Nicotiana is due to the interaction of complementary genes of parental species.…”

Section: And Flower Colour In Brassicoraphanusmentioning

confidence: 99%

“…When brought together in the amphidiploid, they would counteract each other, thus arresting embryo-sac development. Further, GREENLEAF (1942) suggested that the high fertility of amphidiploids synthesized by KOSTOFF (1938) was caused by the homozygous combination of genes which control the same growth reaction and that this genic homozygosity was achieved by chromosomal translocations. In Nicotiana, the increase of fertility of amphidiploids was brought about by the replacement of the sterility genes.…”

Section: And Flower Colour In Brassicoraphanusmentioning

confidence: 99%

The mechanism of increased seed fertility accompanied with the change of flower colour in Brassicoraphanus

Kato

Tokumasu

1976

Euphytica

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INDEX WORDSBrassicoraphanus, seed fertility, flower colour, crossing-over. SUMMARYIn Brassicoraphanus (amphidiploids between Brassica japonica SIEB. and Raphanus sativus L.), yellow-flowered plants that occurred among originally white-flowered plants showed an increased seed fertility. It is assumed that the gene Y (yellow-flower gene) from Brassica and the gene W (whiteflower gene) from Raphanus are located at corresponding loci of only partially homologous chromosomes. W is dominant (epistatic) over Y. The normal white-flowered plants have the genotype YYWW. A YYYW-plant was found, which is assumed to have arisen through crossing-over following multivalent formation. In the progeny of this plant, yellow-flowered plants (YYYY) as well as white-flowered plants (YYWW, YYYW) appeared. The gene for flower colour is closely linked to a gene which controls the development of embryos (or endosperm). This gene promotes the development of embryos in homozygous condition. Therefore, the embryo having only the yellow-flower gene can develop more easily into viable seed than the embryo having the white-flower gene. It is also possible that the sterility of white-flowered plants is caused by a discordance between the cytoplasm of Brassica and W (or genes linked to W) of Raphanus.

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Genic sterility inTabacum-like amphidiploids ofNicotiana

Cited by 20 publications

References 10 publications

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

ISOZYMIC EVIDENCE BEARING ON THE ORIGIN OFNICOTIANA TABACUML.

The mechanism of increased seed fertility accompanied with the change of flower colour in Brassicoraphanus

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