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Artificially induced polyploidization in Humulus lupulus L. and its effect on morphological and chemical traits
TLDR
A field experiment was conducted to compare diploid and tetraploid plants and assess the effect of genome polyploidization on the morphological and chemical characteristics, which revealed significant differences in relation to diploids.
Cytological investigations of the interspecific hybrids of Nicotiana tabacum L. x N. glauca Grah.
TLDR
The number of univalents and the frequency of PMCs containing unpaired chromosomes indicated that amphidiploids N. tabacum cv.
Meiosis and fertility in interspecific hybrids of Nicotiana tabacum L. ×N. glauca Grah. and their derivatives
TLDR
Male fertility disturbances did not correlate with the degree of female fertility upon pollination with N. tahacum, and true amphidiploids, in spite of quite high chromosome pairing during meiosis, were very different in pollen fertility, ranging from 0% to 85%.
Morphological and chemical characteristics of doubled haploids of flue-cured tobacco combining resistance to Thielaviopsis basicola and TSWV
TLDR
Biological tests and field performance of DH revealed potential to overcome the negative effect of coupling between the RSTV-al gene and genes responsible for the morphological deformations, which might be explained by a recombination during microsporogenesis in F1, however the influence of ‘Polalta’-derived RTSW- al gene cannot be excluded.
Growth, development and chemical characteristics of tobacco lines carrying black root rot resistance derived from Nicotiana glauca (Grah.)
TLDR
Results indicate that incorporation of the N. glauca-type resistance into tobacco genome did not produce negative effects on morphological and chemical traits.
Ploidy variation and agronomic performance of F1 hybrids of tetraploid and diploid forms of Humulus lupulus L.
TLDR
Triploid hybrids of H. lupulus were distinguished by a significantly lower seed content compared to ‘Sybilla’, therefore the raw material obtained from them is more suitable for the production of hop pellets and extracts.
Potential of Nicotiana glauca (Grah.) as a source of resistance to black root rot Thielaviopsis basicola (Berk. and Broome) Ferr. in tobacco improvement
TLDR
A wide variation in response to black root rot was found for post-sesquidiploids a clear reflection of extensive chromosome segregation in that hybrid generation.
The effects of explant source and hormone content on plant regeneration and induction of tetraploids in Humulus lupulus L.
TLDR
Flow cytometry revealed that long-term callus cultures, over 23 wk old, led to DNA amplification and formation of tetraploids among the regenerated plants, however, there was a distinct inter-explant diversity in the frequency at which polyploid lines regenerated.
Reaction of Nicotiana species and cultivars of tobacco to Tobacco mosaic virus and detection of the N gene that confers hypersensitive resistance
TLDR
The response of Nicotiana species and cultivars of tobacco to Tobacco mosaic virus and detection of the N gene that confers hypersensitive resistance suggests that N. gossei could be an additional genetic resource for tobacco breeding.
Cytology and fertility of amphidiploid hybrids between Nicotiana wuttkei Clarkson et Symon and N. tabacum L.
In this study, the morphology, cytology and crossability of amphidiploid hybrids (2n = 8x = 80; WWW′W′TTT′T′) between Nicotiana wuttkei × Nicotianatabacum were studied. An R1 progeny of the hybrids
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