Abstract
Zinnia is a tropical ornamental plant, and its cultivar classification is complicated. The typical characters such as height, flower size and leaf shape are of a quantitative nature, and under strong environmental control. In some cases, unequivocal determination of cultivars may be difficult using morphological features only. So in this study, cytological, cytogenetical and molecular biological characteristics of Zinnia have been analyzed. The DNA content of Zinnia angustifolia (cv. ‘Starbright’), Zinnia elegans (cv. ‘Short Stuff’, ‘Dreamland’, ‘Jupiter’, ‘Border Beauty’, ‘Jungle’, ‘Piccolo’, ‘Sinnita’), Zinnia haageana (cv. ‘Chippendale Daisy’, ‘Persian Carpet’) and the F1 hybrid cv. ‘Profusion’ (Z. elegans x Z. angustifolia) has been analyzed by flow cytometry, and compared to morphological features (guard cell size, number of chloroplasts per guard cell, number of chromosomes). The three analyzed species Z. angustifolia, Z. haageana and Z. elegans could be clearly distinguished by their DNA content. The nuclear DNA content ranged from 1 pg (2C) in Z. angustifolia cv. ‘Starbright’ up to 5 pg in the tetraploid Z. elegans cv. ‘Jungle’. Genetic diversity among and between Zinnia varieties was accessed by RAPD, confirming a higher genetic identity in Z. elegans cv. ‘Dreamland’ when compared to Z. haageana cv. ‘Persian Carpet’.
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Claims 4
Claim · model-written summary
DNA content clearly distinguished Z. angustifolia, Z. haageana, and Z. elegans.
- Taxon
- Z. angustifolia
Zinnia angustifoliae0 - Outcome
- clearly distinguished by their DNA contente0
- Comparator
- Z. haageana and Z. eleganse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The three analyzed species Z. angustifolia, Z. haageana and Z. elegans could be clearly distinguished by their DNA content.”
Claim · model-written summary
Z. angustifolia cv. ‘Starbright’ had nuclear DNA content of 1 pg (2C).
- Taxon
- Z. angustifoliaZinnia angustifoliae0
- Material
- Starbrighte0
- Outcome
- nuclear DNA contente0
- Value
- 1 pg (2C)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nuclear DNA content ranged from 1 pg (2C) in Z. angustifolia cv. ‘Starbright’ up to 5 pg in the tetraploid Z. elegans cv. ‘Jungle’.”
Claim · model-written summary
Tetraploid Z. elegans cv. ‘Jungle’ had nuclear DNA content of 5 pg.
- Taxon
- Z. elegans
Zinnia eleganse0 - Material
- Junglee0
- Outcome
- nuclear DNA contente0
- Value
- 5 pge0
- Qualifier
- tetraploide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nuclear DNA content ranged from 1 pg (2C) in Z. angustifolia cv. ‘Starbright’ up to 5 pg in the tetraploid Z. elegans cv. ‘Jungle’.”
Claim · model-written summary
RAPD analysis found higher genetic identity in Z. elegans cv. ‘Dreamland’ than in Z. haageana cv. ‘Persian Carpet’.
- Taxon
- Z. elegansZinnia eleganse0
- Material
- Dreamlande0
- Outcome
- genetic identitye0
- Direction
- highere0
- Comparator
- Z. haageana cv. ‘Persian Carpet’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genetic diversity among and between Zinnia varieties was accessed by RAPD, confirming a higher genetic identity in Z. elegans cv. ‘Dreamland’ when compared to Z. haageana cv. ‘Persian Carpet’.”