Abstract
Adventitious shoots were induced on apical fragments of the grapevine, cv. Meunier, a presumptive periclinal chimera. This cultivar resembles Pinot noir in essential characteristics, but is phenotypically distinguishable by the dense white mat of hairs on the apex and expanding leaves (tomentose phenotype). Plants derived from apical culture were of three types: (i) phenotypically resembling Meunier, (ii) bearing tomentose leaves with comparatively hairless sectors, and (iii) with completely non-tomentose shoots phenotypically similar to Pinot noir. These results establish that adventitious buds of grapevine produced by this method are multicellular in origin and are not derived from single cells. Furthermore, it is concluded that fragmented shoot apex culture of grapevine periclinal chimeras disturbs the integrity of apical tissue allowing separation of component genotypes. Fragmented apex culture of such chimeras is not recommended where trueness-to-type is of prime importance. However, circumstances under which this technique may be usefully applied to separate chimeral genotypes are discussed.
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Claims 8
Claim · model-written summary
Adventitious shoots were induced on apical fragments of Meunier grapevine.
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adventitious shoots were induced on apical fragments of the grapevine, cv. Meunier”
Claim · model-written summary
Meunier resembles Pinot noir but has dense white hairs on apex and expanding leaves.
- Material
- Meuniere1
- Outcome
- dense white mat of hairs on the apex and expanding leavese0
- Comparator
- Pinot noire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This cultivar resembles Pinot noir in essential characteristics, but is phenotypically distinguishable by the dense white mat of hairs on the apex and expanding leaves (tomentose phenotype)”
e1“grapevine, cv. Meunier”
Claim · model-written summary
Apical culture yielded plants phenotypically resembling Meunier.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants derived from apical culture were of three types: (i) phenotypically resembling Meunier”
e1“grapevine, cv. Meunier”
Claim · model-written summary
Apical culture yielded plants with tomentose leaves and relatively hairless sectors.
- Material
- Meuniere1
- Treatment
- apical culturee0
- Outcome
- tomentose leaves with comparatively hairless sectorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants derived from apical culture were of three types: (i) phenotypically resembling Meunier, (ii) bearing tomentose leaves with comparatively hairless sectors”
e1“grapevine, cv. Meunier”
Claim · model-written summary
Apical culture yielded non-tomentose shoots resembling Pinot noir.
- Material
- Meuniere1
- Treatment
- apical culturee0
- Outcome
- completely non-tomentose shoots phenotypically similar to Pinot noire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants derived from apical culture were of three types: (i) phenotypically resembling Meunier, (ii) bearing tomentose leaves with comparatively hairless sectors, and (iii) with completely non-tomentose shoots phenotypically similar to Pinot noir”
e1“grapevine, cv. Meunier”
Claim · model-written summary
The adventitious buds produced by fragmented apex culture are multicellular in origin.
- Organ / stage
- adventitious budse0
- Outcome
- adventitious buds of grapevine produced by this method are multicellular in origine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“adventitious buds of grapevine produced by this method are multicellular in origin and are not derived from single cells”
Claim · model-written summary
Fragmented apex culture disturbs apical tissue integrity and separates chimeral component genotypes.
- Organ / stage
- apical tissuee0
- Treatment
- fragmented shoot apex culturee0
- Outcome
- separation of component genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fragmented shoot apex culture of grapevine periclinal chimeras disturbs the integrity of apical tissue allowing separation of component genotypes”
Claim · model-written summary
The authors advise against fragmented apex culture when trueness-to-type is paramount.
- Outcome
- Fragmented apex culture of such chimeras is not recommendede0
- Qualifier
- where trueness-to-type is of prime importancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fragmented apex culture of such chimeras is not recommended where trueness-to-type is of prime importance”
e1“grapevine periclinal chimeras”