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Barley haploids from reciprocal crosses of Hordeum bulbosum [2x] and H.vulgare [2x]

100%

Surma M., Adamski T.

Journal of Applied Genetics

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1995

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tom 36

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nr 1

Results of crosses between Hordeum bulbosum (2x) and H. vulgare (2x) are presented. Nine H. vulgare genotypes of different crossability 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 recorded. 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 in H. vulgare × H. bulbosum The cvs. Vada, Apex and the doubled haploid line KA7/3 (related to Apex) which showed a low crossability in H. vulgare × H. bulbosum, gave a relatively high seed setting in reciprocal crosses. The obtained results indicate that partial incompatibility of some H. vulgare genotypes with H. bulbosum could be cytoplasmatically influenced.

2

Analysis of DNA polymorphism [RAPD-PCR] and reciprocal effects of geese crossbreeds

84%

Lisowski M., Slawinska A., Dluzniewska P., Mazanowski A., Bednarczyk M.

Folia Biologica

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2008

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tom 56

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nr 3-4

159-164

3

Polytenization in the antipodal nuclei of wheat [Triticum aestivum L.], triticale [xTriticosecale Wittm.] and their reciprocal crosses

67%

Wedzony M.

Acta Biologica Cracoviensia. Series Botanica

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1992-1993

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tom 34-35

The antipodals of the mature embryo sacs of wheat (Triticum aestivum L.) and triticale (xTriticosecale Wittm.), as well as those of the embryo sacs developing after reciprocal cross pollination of these taxa were investigated. In a single embryo sac there were on average 14 antipodals in triticale and 18,5 in wheat. The endoreduplication cycles were stated in the antipodal nuclei. Before the pollination they led to a maximum degree of ploidy 8n in triticale and 16n in wheat. Within three days after the pollination a number of the antipodal nuclei reached 256n in the triticale ♀ x wheat ♂ cross and 512n in the reciprocal cross. The polytene chromosomes resulted from a gradual condensation of chromatin with the increasing degree of ploidy. They were the only type of the chromatin organization found in all the antipodal nuclei over 32n degree of ploidy. In both crosses the first signs of disintegration of the antipodal apparatus were found three days after the pollination. At that time the cellularization of the initially coenocitic endosperm was starting in the triticale ♀ x wheat ♂ cross. By contrast, the latter process was withheld in the reciprocal cross, which together with other disturbances of the endosperm development caused almost complete kernels sterility. The possibility of improper interaction of the mother derived antipodal apparatus with the hybrid endosperm was discussed.

4

Early postfertilization embryo sac development Triticum aestivum and xTriticosecale reciprocal crosses

59%

Wedzony M.

Acta Biologica Cracoviensia. Series Botanica

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1995

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tom 37

Embryo sac development in reciprocal crosses of winter, hexaploid: wheat (Triticum aestivum L. cultivar ‘Liwilla’) and triticale (xTriticosecale Wittm. strain CHD 464) was examined during the first five days after pollination. Double fertilization was found in both crosses. Embryos developed regularly, slower however in the wheat ♀ x triticale ♂ cross. Aberrant, polyploid (up to 24n) endosperm nuclei were formed through disturbed mitotic cycles in both crosses. They occurred more frequently in the wheat ♀ x x triticale ♂ cross. Also, an early desynchronization of nuclear divisions and an uneven distribution of endosperm nuclei were found in the latter cross. They were accompanied with delayed or not complete cellularization of endosperm and its degradation in some regions. These abnormalities are the possible cause of the severe kernel sterility in the wheat ♀ x triticale ♂ cross. In contrast, the reciprocal cross produced shrivelled but mostly viable kernels.

Ograniczanie wyników

2 Acta Biologica Cracoviensia. Series Botanica

1 Folia Biologica

1 Journal of Applied Genetics

2 Wedzony M.

1 Adamski T.

1 Bednarczyk M.

1 Dluzniewska P.

1 Lisowski M.

1 Mazanowski A.

1 Slawinska A.

1 Surma M.

1 2008

2 1995

1 1993

Barley haploids from reciprocal crosses of Hordeum bulbosum [2x] and H.vulgare [2x]

Analysis of DNA polymorphism [RAPD-PCR] and reciprocal effects of geese crossbreeds

Polytenization in the antipodal nuclei of wheat [Triticum aestivum L.], triticale [xTriticosecale Wittm.] and their reciprocal crosses

Early postfertilization embryo sac development Triticum aestivum and xTriticosecale reciprocal crosses