• Corpus ID: 33009570

Cytology and fertility of viable hybrids of Nicotiana tabacum L. cv. TB-566 with N. alata Link et Otto.

@article{Laskowska2005CytologyAF,
  title={Cytology and fertility of viable hybrids of Nicotiana tabacum L. cv. TB-566 with N. alata Link et Otto.},
  author={Dorota Laskowska and Apoloniusz Berbe{\'c}},
  journal={Journal of applied genetics},
  year={2005},
  volume={46 1},
  pages={
          11-8
        }
}
A vigorous hybrid (N. tabacum cv. TB-566 tetra x N. alata) x N. alata was obtained by backcrossing a partly viable sesquidiploid hybrid N. tabacum cv. TB-566 tetra x N. alata to N. alata. The hybrid was a 35-chromosome near-amphihaploid with a pair of N. alata chromosomes in disomic condition. It was completely self- and cross-sterile and formed from 7 to 8 bivalents in pollen mother cells. By using stem pith culture, polyploidized regenerants were obtained from the 35-chromosome hybrid with… 
Interspecific cross‐hybrids of Nicotiana tabacum L. cv. (gla.) S ‘K326’ with Nicotiana alata
TLDR
In order to elucidate the unexpected fertility recovery of the fertile F1 plants, some N. alata fertility restoration ppr genes were cloned and were shown to be differentially expressed between parental lineages as well as between both F1 subgroups, suggesting that N. alata contains fertility restoring allele able to overcome the CMS of N.tabacum.
The Use of Nicotiana Species in Tobacco Improvement
TLDR
This review examines how and to what extent natural germplasm resources have been utilized in hybridization and introgression experiments over the past century, and focuses on individual Nicotiana species involved in interspecific hybrids with cultivated tobacco produced by sexual and asexual methods.
Cytogenetic Characteristics of New Monosomic Stocks of Cotton (Gossypium hirsutum L.)
TLDR
The development of a monosomic stock collection of cotton from Uzbekistan is presented, including the origin of 92 primary monosomics, meiotic metaphase-I analysis, study of tetrads of microspores, pollen fertility, and monosome transmission rates for some monosomal lines.
Effectiveness of combining resistance to Thielaviopsis basicola and Tomato spotted wilt virus in haploid tobacco genotypes
TLDR
The results indicate that small proportion of TSWV-resistant haploids is probably due to the influence of deleterious genes flanking the resistance factor that reduced vitality of gametophytes.
TSWV resistance in DH lines of tobacco (Nicotiana tabacum L.) obtained from a hybrid between ‘Polalta’ and ‘Wiślica’
TLDR
The DH lines PW-833, PW-834, and PW-900 showed a near correct morphology and stably inherited dominant monogenic resistance to TSWV.
A survey of Nicotiana germplasm for resistance to Tomato spotted wilt virus (TSWV)
TLDR
The reaction to Tomato spotted wilt virus (TSWV) was evaluated in 94 accessions of Nicotiana, originating from the Institute of Soil Science and Plant Cultivation tobacco germplasm collection in Puławy, Poland and demonstrated the presence of SCAR markers linked to the resistance gene.
Resistance Response of the Recently Discovered Species Nicotiana mutabilis to Potato virus Y (PVY) and Tomato spotted wilt virus (TSWV) Compared to Other Sources of Resistance
TLDR
This species extends the genetic variation in the genus Nicotiana and, because of its tolerance to PVY and partial resistance to TSWV, it may be a potential source of resistance to these viruses.