Cytogenetics of the vegetable crops. II. Crucifers

Yarnell, S. H.

doi:10.1007/bf02872468

Cited by 70 publications

(17 citation statements)

References 86 publications

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“…Some recent studies have been aimed at evaluating the potential for transfer of transgenes between oilseed rape and specific recipient species (Bing et al, 1991;Chevre et al, 1992;Kerlan, 1992a, b;Lefol, 1993;Eber et al, 1994). Several earlier reviews have described cytological and taxonomic relationships within the Brassiceae, and include data on sexual compatibility among some members of the family (Manton, 1932;Yarnell, 1956;Heyn, 1977;Harberd, 1976;Harberd and McArthur, 1980;Prakash and Hinata, 1980). Since these reports, many more studies have extended this information, and some very recent experiments have included transgenic plants with marker genes that are useful for monitoring transgene transfer.…”

Section: -8819 9 1994 Chapman and Hallmentioning

confidence: 97%

Opportunities for gene transfer from transgenic oilseed rape (Brassica napus) to related species

Scheffler

Dale

1994

Transgenic Research

168

114

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Before novel transgenic plant genotypes are grown outside containment facilities and evaluated under field conditions, it is necessary to complete a risk assessment to consider the possible consequences of that release. An important aspect of risk assessment is to consider the likelihood and consequences of the transgene being transferred by cross-pollination to related species, including other crops, weeds and ruderal populations. The purpose of this report is to review the literature to assess the ease with which Brassica napus can hybridize with related species. The evidence for hybridization is considered at three levels: a) by open pollination, b) by hand pollination and c) by the use of in vitro ovule and embryo rescue techniques; and also examines the fertility and vigour of the F 1, F 2 and backcross generations. Four species are reported to hybridize with B. napus by open pollination: B. rapa and B. juncea using fully fertile parents; and B. adpressa and R. raphanistrurn using a male-sterile B. napus parent. Seventeen species are reported to form hybrids (including the four species above) with B. napus when pollination is carried out manually. At least 12 of these species were unable to form F 2 progeny, and eight were unable to produce progeny when the Fa was backcrossed to one of the parental species. Many factors will influence the success of hybridization under field conditions, including: distance between the parents, synchrony of flowering, method of pollen spread, specific parental genotypes used, direction of the cross and the environmental conditions. Even where there is a possibility of hybridization between B. napus and a related species growing in the vicinity of a release, poor vigour and high sterility in the hybrids will generally mean that hybrids and their progeny will not survive in either an agricultural or natural habitat.

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Section: -8819 9 1994 Chapman and Hallmentioning

confidence: 97%

Opportunities for gene transfer from transgenic oilseed rape (Brassica napus) to related species

Scheffler

Dale

1994

Transgenic Research

168

114

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“…The Brassica napus x B. oleracea cross is known to be extremely difficult (U, 1935;CALDER, 1937;YARNELL, 1956;HONMA& SUMMERS, 1976;CHIANG etal.,1977),and as a consequence, has received much less attention than others in the Brassiceae (MCNAUGHTON & Ross, 1978). Yet the potential for transferring agronomically useful traits such as herbicide resistance, disease resistance and S alleles from one species to the other is well known.…”

Section: Introductionmentioning

confidence: 99%

The transfer of triazine resistance from Brassica napus L. to B. oleracea L. I. Production of F1 hybrids through embryo rescue

1987

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“…Artificial synthesis of B. napus (OLSON, 1960) biochemical analysis of seed protein extracts (VAUGHAN, 1977) and DNA hybridization studies (VERMA & REES, 1974) have all given support to the amphidiploid origin of B. nupus. There are a number of cytogenetic studies on hybrids between B. napus and B. campestris ~ for earlier works see reviews by YARNELL (1956) and MORICE (1963) more recently by NWANKITI (1970), MCNAUGHTON (1973) -but relatively few between B. napus and B. oleracea as crosses between the latter two species are more difficult to produce. U (1935) first reported the chromosome pairing relationships in a hybrid between B. napus var.…”

Section: Introductionmentioning

confidence: 99%

Transfer of resistance to race 2 of Plasmodiophora brassicae from Brassica napus to cabbage (B. oleracea var. capitata). II. Meiosis in the interspecific hybrids between B. napus and 2x and 4x cabbage

1978

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Meiosis in 14 interspecific FI hybrids with three chromosomal levels (triploid, tetraploid, hexaploid: 2n = 28, 37 and 55) between Brassica napus L. and 2x and 4x cabbage (B. oleracea var. capitata L.) was studied. The oleracea genome from B. napus maintained close homology with the c genome of cabbage while the campestris genome of B. napus showed partial homology with the c genome contained in the hybrids. Genotypic influence on chromosome pairing was indicated. Structural chromosome differences and spontaneous chromosome breakage and reunion were suggested as causes for the abnormalities which related to the unbalance of the genotypes. The divergence of the genomes of B. napus and B. oleracea and the need for the qualification of the term secondary association were discussed.

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Cytogenetics of the vegetable crops. II. Crucifers

Cited by 70 publications

References 86 publications

Opportunities for gene transfer from transgenic oilseed rape (Brassica napus) to related species

Opportunities for gene transfer from transgenic oilseed rape (Brassica napus) to related species

The transfer of triazine resistance from Brassica napus L. to B. oleracea L. I. Production of F1 hybrids through embryo rescue

Transfer of resistance to race 2 of Plasmodiophora brassicae from Brassica napus to cabbage (B. oleracea var. capitata). II. Meiosis in the interspecific hybrids between B. napus and 2x and 4x cabbage

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