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1

The influence of genotypes on production of barley haploids with Hordeum bulbosum cytoplasm

100%
Adamski T., Surma M.
Genetica Polonica
|
1994
|
vol. 35
|
issue 4
241-248
EN
Hordeum bulbosum (2x) was crossed to H.vulgare (2x) to estimate the influence of genotypes on production of barley haploids with H.bulbosum cytoplasm.Four H.bulbosum clones were pollinated with 11 H.vulgare cultivars and doubed haplod lines.Immature embryos were cultured on the B5 medium (Gamborg et al.1968).Seed setting, embryo differentiation, haploid plant development and haploid plant efficiency were scored and computed using multivariate analysis of variance as well as cluster and canonical variable analysis.Only the influence of H.vulgare genotypes on haploid production appeared to be significant.Haploid plant efficiency was very low (average 1.45%) and depended mainly on seed setting.Obtained barley haploids and consequently, doubled haploid lines with alien cytoplasm can constitute precise material for genetic studies dealing with cytoplasmic inheritance.
2

The use of laser light for obtaining barley haploids by Hordeum bulbosum method

88%
Rybinski W., Surma M., Adamski T.
Biotechnologia
|
2001
|
issue 1
143-147
EN
The effect of helium-neon laser with wavelength of 632 nm on seed setting in a cross of Hordeum vulgare x H. bulbosum was studied. The seeds before sowing as well as immature embryos were irradiated with laser light. Material not irradiated with laser beams constituted the control. It was shown that stimulative dose of laser beams increased the number of seeds/100 pollinated florets in comparison with the control combination. After laser treatment, the seed setting of the line HG156, and cultivars Vada and Apex was higher by 13.0, 7.9 and 3.2%, respectively. The number of obtained haploids/100 cultured embryos irradiated with laser light was also higher in comparison with the control by 1.8, 0.9 and 10.8%, respectively. The obtained results show that treatment with laser beams was more effective at the first step of haploid production (seeds/100 florets) than at the next step (haploids/100 embryos cultured). From the practical point of view, better results can be obtained by irradiation of seeds before sowing than by irradiation of immature embryos. Cultivar Apex with a positive reaction on irradiation of embryos was an exception here.
3

Barley haploid from reciprocal crosses of Hordeum bulbosum (2x) and H.Vulgare (2x)

88%
Surma M., Adamski T.
Journal of Applied Genetics
|
1995
|
vol. 36
|
issue 1
11-16
EN
Results of crosses between Hordeum bulbosum (2x) and H.vulgare (2x) are presented.Nine H.vulgare genotypes of different crooability with H.bulbosum were treated both as female and male parents Immature embryos were cultured in vitro according to Adamski and Surma (1994).Seeds set, embryo development and obtained haploid plants were recoded.It was shown that seed setting and haploid plant efficiency (haploids/100 florets) were about ten times lower in H.bulbosum x H.vulgare than H.vulgare x H.bulbosum.The cvs.Vada, Apex and the doubled haploid line KA7/3 (related to Apex) which showed a low crossability in H.vulgare x H.bulbosum,gave a relatively high seed setting in reciprocal crosses.The obtained results indicte that partial incompatibility of some H.vulgare genotypes with H.bulbosum could be cytoplasmatically influenced.
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