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Genetic variation and population structure of three Trifolium species

100%

Bulinska-Radomska Z.

Journal of Applied Genetics

1996

tom 37

nr 2

Three diploid Trifolium (Fabaceae) species, T. campestre, T.fragiferum and T. montanum, were electrophoretically assayed to elucidate the range and organization of genetic variation in relation to the mating system, reproduction mode and longevity of the species. T. campestre is an annual self-pollinated species. T.fragiferum and T. montanum are cross-pollinated perennials. The former species reproduces both sexually and vegetatively, whereas the latter relies solely on sexual reproduction. Several populations of each species collected throughout Poland were surveyed for 15 enzymes. The measures of variation included: proportion of polymorphic loci per population, average number of alleles per locus, average gene diversity (He) and genetic distance (D). To describe the organization of diversity in each species, total genetic variation per locus (Ht) was calculated and partitioned into intra-(Hs) and inter-(Dst) populational components. Both cross-pollinated species had more polymorphic loci, higher numbers of alleles per locus and higher level of diversity than self-pollinated T. campestre. Most of genetic variation of the latter species was allocated among populations unlike in T.fragiferum and T. montanum.

Arbuscular mycorrhiza of plants spontaneously colonizing the soda heap in Jaworzno [Southern Poland]

80%

Gucwa-Przepiora E., Blaszkowski J.

Acta Societatis Botanicorum Poloniae

2007

tom 76

nr 1

The results of studies of the mycorrhizal status of plant species spontaneously established on the soda heap located in Jaworzno (Upper Silesia, Poland) are presented. Additionally, the species of arbuscular fungi of the phylum Glomeromycota extracted from field-collected rhizosphere substrate samples of the heap are showed. Arbuscular mycorrhizae were described in 17 plant species. Five Glomus spp. were recognized in the spore populations of arbuscular fungi isolated. The investigation presented in this paper for the first time revealed Centaurea stoebe and Trifolium montanum to be hosts of arbuscular fungi.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Journal of Applied Genetics

1 Blaszkowski J.

1 Bulinska-Radomska Z.

1 Gucwa-Przepiora E.

1 2007

1 1996

Wyniki wyszukiwania

Genetic variation and population structure of three Trifolium species

Arbuscular mycorrhiza of plants spontaneously colonizing the soda heap in Jaworzno [Southern Poland]