Fortpflanzungsmodus und Meiose apomiktischer Blütenpflanzen

Rutishauser, A.

doi:10.1007/978-3-7091-5484-7_1

Cited by 12 publications

(12 citation statements)

References 200 publications

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“…In his review on reproduction and meIOSIS of apomictic flowering plants, Rutishauser (1967) discusses the genetics of the different types of apomicts (see also Asker 1980). In his review on reproduction and meIOSIS of apomictic flowering plants, Rutishauser (1967) discusses the genetics of the different types of apomicts (see also Asker 1980).…”

Section: Apomixis and Related Systemsmentioning

confidence: 99%

“…It has been suggested on several occasions that interspecific hybridity and polyploidy playa role in apomixis (Ernst 1918;Gustafsson 1947;Rutishauser 1967;Gottschalk 1976). One possible reason why several apomicts are hybrids and/or polyploids is that their sexual fertility is often insufficient to guarantee reproduction at the necessary level and that only those types that happen to have a tendency to apomixis can maintain themselves.…”

Section: Apomixis and Related Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Cytogenetics in Plant Breeding

Sybenga

1992

Monographs on Theoretical and Applied Genetics

109

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Section: Apomixis and Related Systemsmentioning

confidence: 99%

Section: Apomixis and Related Systemsmentioning

confidence: 99%

Cytogenetics in Plant Breeding

Sybenga

1992

Monographs on Theoretical and Applied Genetics

109

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“…Apomictic processes deviate from sexual reproduction in several aspects: (i) modification or complete avoidance of meiosis, (ii) formation of unreduced megaspores, (iii) parthenogenetic development of embryo, and (iv) autonomous or pseudogamous endosperm development without fertilization (Rutishauser, 1967;Asker, 1980;Nogler, 1984;Asker and Jerling, 1992;Koltunow, 1993). Apomictic processes deviate from sexual reproduction in several aspects: (i) modification or complete avoidance of meiosis, (ii) formation of unreduced megaspores, (iii) parthenogenetic development of embryo, and (iv) autonomous or pseudogamous endosperm development without fertilization (Rutishauser, 1967;Asker, 1980;Nogler, 1984;Asker and Jerling, 1992;Koltunow, 1993).…”

Section: Mechanisms Of Apomixismentioning

confidence: 99%

“…Apomixis is most common in Gramineae, Compositae and Rosaceae (Rutishauser, 1967;Nygren, 1967;Bashaw, 1980;Nogler, 1984;Hanna and Bashaw, 1987;Asker and Jerling, 1992;Hanna, 1991Hanna, , 1995aKoltunow, 1993;Khush et al, 1994). It is widespread throughout the plant kingdom.…”

Section: Introductionmentioning

confidence: 99%

Somaclonal Variation and Induced Mutations in Crop Improvement

Jain¹,

Brar²,

Ahloowalia³

1998

Current Plant Science and Biotechnology in Agriculture

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Aims and ScopeThe book series is intended for readers ranging from advanced students to senior research scientists and corpomte directors interested in acquiring in-depth, state-of-the-art knowledge about research findings and techniques related to all aspects of agricultural biotechnology. Although the previous volumes in the series dealt with plant science and biotechnology, the aim is now to also include volumes dealing with animals science, food science and rnicrobiology. While the subject matter will relate more particularly to agricultural applications, timely topics in basic science and biotechnology will also be explored. Some volumes will report progress in rapidly advancing disciplines through proceedings of symposia and workshops while others will detail fundamental information of an enduring nature that will be referenced repeatedly.The titles published in this series are listed at the end ofthis volume.

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“…Usually, the aposporous embryo-sacs have the same morphology as the sexual ones. However, in grasses of the subfamily Panicoideae, the aposporous embryo-sacs are monopolar and four-nucleated, whereas the sexual ones are eight-nucleated of the common Polygonum type (RUTISHAUSER 1967).…”

mentioning

confidence: 99%

Progress in apomixis research

Asker

2009

Hereditas

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Apomixis in the angiosperms comprises different kinds of asexual reproduction, wholly or partly replacing the sexual cycle. Recent views on evolutionary advantages and drawbacks of apomixis are surveyed. Gametophytic apomixis implies two main deviations from sexual reproduction: the formation of unreduced embryo‐sacs, and the capacity of their egg cells for parthenogenetic development. Examples are discussed where either of these phenomena occur in sexual taxa. – The genetics of apospory has been elucidated in some cases. In Ranunculus auricomus and Panicum maximum, apospory is controlled by one pair of alleles, and is not recessive to sexuality. The mode of reproduction is influenced by the pollinator (cf. induced parthenogenesis in sexuals) and environmental factors, as well as by level of ploidy. Diploid‐tetraploid‐haploid (‐diploid) cycles with alternations between apomixis and sexuality are known in grasses and in Potentilla. Crossing experiments between sexual crops and related apomicts have been performed, for instance between maize and Tripsacum dactyloides, and between sugar beet and Beta lomatogona. Attempts are made to select apomicts (partly following mutagen treatment) after cloning of vigorous but sterile hybrids between Festuca and Lolium species. To manipulate apomixis in breeding, research in its basic mechanisms and gene background should be intensified.

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Fortpflanzungsmodus und Meiose apomiktischer Blütenpflanzen

Cited by 12 publications

References 200 publications

Cytogenetics in Plant Breeding

Cytogenetics in Plant Breeding

Somaclonal Variation and Induced Mutations in Crop Improvement

Progress in apomixis research

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