Tests for the presence of gametoclonal variation in barley and wheat doubled haploids produced using the Hordeum bulbosum system

Snape, J. W.; Sitch, L. A.; Simpson, Eleanor H.; Parker, Beryl

doi:10.1007/bf00276758

Cited by 30 publications

(4 citation statements)

References 6 publications

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“…This so called 'somaclonal' or gametoclonal' variation was noticed in wheat plants derived from different explant sources . Sometimes, genetic variation preexists in the cells of the explant (Charmet et al ., 1986 ;Snape et al ., 1988 ;Breiman et al ., 1989) and in some other instances presumed changes in the regenerated plants originate from crosspollination or admixture (Metakovsky et al ., 1987) . Nevertheless, there is evidence of various types of genetic variation, suggesting that there is no single origin but a range of multiplicity of contributing causes .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis

1995

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Somatic embryogenesis was initiated from `immature embryos' on Murashige-Skoog (MS) medium plus 2 mg .1 -1 2,4-dichlorophenoxyacetic acid, 2% sucrose and 0 .6% agarose. Somatic embryos were isolated and regenerated into whole green plants on MS medium devoid of 2,4-D . These regenerants were previously demonstrated to differ in their mitochondrial DNA organization . In order to estimate their characteristics three progenies of short-term culture regenerants and three progenies of long-term culture regenerants were analyzed and compared to the parental line . These somaclones obtained from the wheat variety Chinese Spring were evaluated for variation of 13 agronomic and morphological quantitative characters in comparison to the parental line . Significant variation was observed for plant height, spike length, main tiller diameter, between the somaclones regenerated from long-term culture and their parent . Differences were observed to increase with the duration of culture, leading to a significant modification of the structure of the plants . Several changes occurred during the somatic tissue cultures, but to a lesser extent than has previously been described in the literature .

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Section: Introductionmentioning

confidence: 99%

Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis

1995

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“…DH lines exceeding the agronomic performance over the source cultivar have been recorded in rice, wheat and tobacco (Hu and Zeng 1984). In addition to high yield 40 % lines exhibited poorer yield performance in wheat (Snape et al 1988). Two lines were 18 -20 % shorter and less vigour, but these lines exhibited earlier flowering and maturation by 15 d. The dwarf character and reduced vigour may by due to differential DNA replication as in tobacco DH line (De Paepe et al 1981).…”

Section: Discussionmentioning

confidence: 97%

Genetic Variability in the Progeny of Androgenic Dihaploid Plants and Selection of High Agronomic Performing Lines in Brassica Juncea

Agarwal¹,

Bhojwani²

2004

Biol. plant.

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Androgenic lines of Brassica juncea cv. PR-45 raised by anther culture, were screen for genetic variation. 393 androgenic plants were transferred to pots to study the R 0 generation. These plants showed substantial variation for different characters. Seed progenies of 27 lines of R 0 plants were sown in the field to study R 1 generation. Androgenic plants within lines were significantly homogeneous for the various agronomic characters studied. Two lines were shorter (18 -20 %) than the control plants, with a remarkable feature of early maturation. Three lines showed 27 -31 % higher yield than the parent cultivar.

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“…the Bulbosum method and anther/microspore culture differ in several aspects that have to be considered for optimal success. Basically, wide hybridization is less genotype-dependent than in vitro androgenesis, especially for spring barley, and generates little or no genetic variation (Snape et al 1988;Devaux et al 1993). In addition, distortion of segregation at marker loci is less frequent (Schön et al 1990;Devaux et al 1996).…”

Section: Comparisons Of Haploid Production Methodsmentioning

confidence: 99%

Advances in Haploid Production in Higher Plants

Touraev¹,

Forster²,

Jain³

2009

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Tests for the presence of gametoclonal variation in barley and wheat doubled haploids produced using the Hordeum bulbosum system

Cited by 30 publications

References 6 publications

Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis

Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis

Genetic Variability in the Progeny of Androgenic Dihaploid Plants and Selection of High Agronomic Performing Lines in Brassica Juncea

Advances in Haploid Production in Higher Plants

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