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Genetic diversity and relationship of Hunan province of China local tree peonies based on SSR markers

100%

Zhang M.-H., Jin X.-L., Wen Y.-F., Shen S., Wen-Xing, Wu S., Lu J.-H., Ye-Ye

Acta Scientiarum Polonorum. Hortorum Cultus

2019

tom 18

nr 4

Paeonia sect. Moutan is a wide known ornamental plant in the world. The objective of this study was to provide the theoretical basis for scientific preservation and utilization of tree peony resources of Hunan province of China. Simple sequence repeat (SSR) markers were applied to reveal the genetic diversity and relationship of 21 tree peony resources and 45 domestic and foreign tree peony cultivars. Clear bands, the size of which ranged from 115 bp to 379 bp, were detected with 14 primers. In total, 90 alleles were detected and the number of alleles detected with one primer varied between 5 and 13; the number of effective alleles ranged from 1.183 to 2.070; the polymorphism ratio of each locus was 100%. The observed heterozygosity, which ranged from 0.120 to 0.851 with an average of 0.532, was larger than the expected one, which ranged from 0.090 to 0.470 with an average of 0.300. Shannon index ranged from 0.137 to 0.695 and fixation index ranged from −0.332 to −0.869. The results show abundant genetic diversity in tree peony of Hunan province and SSR markers distinguishing homonymous tree peony resources successfully.

Latest Frasnian Atrypida [Brachiopoda] from South China

80%

Ma X. P.

Acta Palaeontologica Polonica

1998

tom 43

nr 2

In South China latest Frasnian (Palmatolepis linguiformis Zone) the representatives of the order Atrypida (Brachiopoda) are most common in central Hunan Province. They are relatively rare in other parts of South China due to unfavourable ecologic conditions. Unlike most previously reported sections, including some sections in South China, the four Frasnian-Famennian (F-F) boundary sections examined here do not show any evidence for black shale. Atrypids are abundant and relatively diverse about 15 to 20 m below the F-F boundary (six species), and very rare about 1-2 m below the boundary (with only two species). It seems that the disappearance of most atrypids occurred well before the F-F boundary. Nine species (including Iowatrypa? qidongensis sp. n.), assigned to six genera, are discussed and described.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Jin X.-L.

1 Lu J.-H.

1 Ma X. P.

1 Shen S.

1 Wen Y.-F.

1 Wen-Xing

1 Wu S.

1 Ye-Ye

1 Zhang M.-H.

1 2019

1 1998

Wyniki wyszukiwania

Genetic diversity and relationship of Hunan province of China local tree peonies based on SSR markers

Latest Frasnian Atrypida [Brachiopoda] from South China