Abstract
We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey and the significance of these characters in a taxonomical context. The results show that the taxa differ from each other in terms of seed shape and color. The seed size ranges from 1.25 mm to 2.99 mm in length and from 0.66 mm to 2.16 mm in width, Thlaspi rosulare and T. tatianae having the largest and T. annuum having the smallest seeds. The seed surface ornamentation is classified into nine types: reticulate-areolate, scalariform, reticulate, reticulate-foveate, ruminate, ocellate, tuberculate, areolate, and colliculate. The most common type is reticulate-areolate, whereas areolate, colliculate, ocellate, and tuberculate ornamentation types were found to be taxon-specific. The testa is typically made up of four layers: the epidermis, the subepidermis, the sclerotic (or palisade) layer, and the parenchyma layer. The sclerotic (or palisade) layer may not be seen in some of the species. The structures and thicknesses of the epidermis, the subepidermis, the sclerotic (or palisade) layer, and the parenchyma layer are highly significant characters that reveal interspecific relationships within the examined taxa. The results are also compared with Meyer?s findings and classification of 1973, 1979, 1991, and 2001, and taxon transfers are questioned. In addition, a key is provided for the identification of the examined taxa based on seed characteristics.
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Claims 13
Claim · model-written summary
The 22 examined Thlaspi sensu lato taxa differ from each other in seed shape and color.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e1“the taxa differ from each other in terms of seed shape and color”
Claim · model-written summary
Seed length of the examined taxa ranges from 1.25 mm to 2.99 mm.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e2“The seed size ranges from 1.25 mm to 2.99 mm in length”
Claim · model-written summary
Seed width of the examined taxa ranges from 0.66 mm to 2.16 mm.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e3“from 0.66 mm to 2.16 mm in width”
Claim · model-written summary
Thlaspi rosulare and T. tatianae have the largest seeds.
- Taxon
- Thlaspi rosulare and T. tatianaeNoccaea rosularisNoccaea tatianaee4
- Outcome
- largeste4
Verbatim
e4“Thlaspi rosulare and T. tatianae having the largest and T. annuum having the smallest seeds”
Claim · model-written summary
Thlaspi annuum (T. annuum) has the smallest seeds.
- Taxon
- T. annuumNoccaea annuae4
- Outcome
- smallest seedse4
Verbatim
e4“Thlaspi rosulare and T. tatianae having the largest and T. annuum having the smallest seeds”
Claim · model-written summary
Seed surface ornamentation of the examined taxa is classified into nine types.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e5“The seed surface ornamentation is classified into nine types: reticulate-areolate, scalariform, reticulate, reticulate-foveate, ruminate, ocellate, tuberculate, areolate, and colliculate”
Claim · model-written summary
Reticulate-areolate is the most common seed surface ornamentation type.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e6“The most common type is reticulate-areolate”
Claim · model-written summary
Areolate, colliculate, ocellate and tuberculate ornamentation types were found to be taxon-specific.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e7“areolate, colliculate, ocellate, and tuberculate ornamentation types were found to be taxon-specific”
Claim · model-written summary
The testa is typically made up of four layers: epidermis, subepidermis, sclerotic (palisade) layer and parenchyma layer.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e1“The testa is typically made up of four layers: the epidermis, the subepidermis, the sclerotic (or palisade) layer, and the parenchyma layer”
Claim · model-written summary
The sclerotic (palisade) layer may not be seen in some of the species.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e2“The sclerotic (or palisade) layer may not be seen in some of the species”
Claim · model-written summary
The structures and thicknesses of the testa layers are highly significant characters that reveal interspecific relationships within the examined taxa.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e3“The structures and thicknesses of the epidermis, the subepidermis, the sclerotic (or palisade) layer, and the parenchyma layer are highly significant characters that reveal interspecific relationships within the examined taxa”
Claim · model-written summary
The results are compared with earlier classifications and taxon transfers are questioned.
Verbatim
e0“We studied morphological and anatomical characteristics of seeds of 22 taxa in the sections Nomisma, Thlaspi, and Pterotropis of Thlaspi sensu lato from Turkey”
e4“taxon transfers are questioned”
Claim · model-written summary
A key for identifying the examined taxa based on seed characteristics is provided.
Verbatim
e5“a key is provided for the identification of the examined taxa based on seed characteristics”