Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.)
The article highlights results of research over simulative apomixes in pear and its utilization for obtaining haploids and homozygote diploids. It has been established that over 50% pear varieties with failed remote hybridization are capable of generating seeds of apomictic origin producing diploid...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Ukrainian Institute for Plant Variety Examination
2013-02-01
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| Series: | Plant Varieties Studying and Protection |
| Online Access: | http://journal.sops.gov.ua/article/view/58699 |
| _version_ | 1818928367055929344 |
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| author | Є. О. Долматов В. Є. Джафарова |
| author_facet | Є. О. Долматов В. Є. Джафарова |
| author_sort | Є. О. Долматов |
| collection | DOAJ |
| description | The article highlights results of research over simulative apomixes in pear and its utilization for obtaining haploids and homozygote diploids. It has been established that over 50% pear varieties with failed remote hybridization are capable of generating seeds of apomictic origin producing diploid plants. Genotypes displaying maximal inclination to apomixes have been singled out. Apomictic pear seedlings obtained from foreign pollination within the limits of the same combination are inherent in profound morphological diversity. Fruit-bearing apomicts originated from one and the same maternal plant differ to the same extent as hybrid seedlings of the same family. Genetic markers have enabled to establish that these are embryo sacs in which meiosis has completed that give rise to apomictic seeds. In vitro method as used for the purpose of increasing apomictic plants output has been illustrated. The greatest induction of apomictic shoots in vitro has been reached by alternation of BAP cytokinin at concentration of 1mg/l and 2 mg/l on the background of GA3 amounting to 1,5 mg/l. Grafting with shoots in vitro on non-sterile rootstocks of pear (Pyrus communis) has increased the output of plants up to 80%. A cytological assessment of 9 apomictic samples is provided. The cytological analysis of samples of apomictic forms has certified the presence of simulative haploid parthenogenesis in pear. |
| first_indexed | 2024-12-20T03:27:47Z |
| format | Article |
| id | doaj.art-400f8b85d91044da98956ead5e00d43c |
| institution | Directory Open Access Journal |
| issn | 2518-1017 2518-7457 |
| language | English |
| last_indexed | 2024-12-20T03:27:47Z |
| publishDate | 2013-02-01 |
| publisher | Ukrainian Institute for Plant Variety Examination |
| record_format | Article |
| series | Plant Varieties Studying and Protection |
| spelling | doaj.art-400f8b85d91044da98956ead5e00d43c2022-12-21T19:55:03ZengUkrainian Institute for Plant Variety ExaminationPlant Varieties Studying and Protection2518-10172518-74572013-02-0101(18)222510.21498/2518-1017.1(18).2013.5869958699Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.)Є. О. ДолматовВ. Є. ДжафароваThe article highlights results of research over simulative apomixes in pear and its utilization for obtaining haploids and homozygote diploids. It has been established that over 50% pear varieties with failed remote hybridization are capable of generating seeds of apomictic origin producing diploid plants. Genotypes displaying maximal inclination to apomixes have been singled out. Apomictic pear seedlings obtained from foreign pollination within the limits of the same combination are inherent in profound morphological diversity. Fruit-bearing apomicts originated from one and the same maternal plant differ to the same extent as hybrid seedlings of the same family. Genetic markers have enabled to establish that these are embryo sacs in which meiosis has completed that give rise to apomictic seeds. In vitro method as used for the purpose of increasing apomictic plants output has been illustrated. The greatest induction of apomictic shoots in vitro has been reached by alternation of BAP cytokinin at concentration of 1mg/l and 2 mg/l on the background of GA3 amounting to 1,5 mg/l. Grafting with shoots in vitro on non-sterile rootstocks of pear (Pyrus communis) has increased the output of plants up to 80%. A cytological assessment of 9 apomictic samples is provided. The cytological analysis of samples of apomictic forms has certified the presence of simulative haploid parthenogenesis in pear.http://journal.sops.gov.ua/article/view/58699 |
| spellingShingle | Є. О. Долматов В. Є. Джафарова Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) Plant Varieties Studying and Protection |
| title | Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) |
| title_full | Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) |
| title_fullStr | Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) |
| title_full_unstemmed | Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) |
| title_short | Apomixis and the problem of obtaining haploids and homozygote diploids in pear (Pyrus communis L.) |
| title_sort | apomixis and the problem of obtaining haploids and homozygote diploids in pear pyrus communis l |
| url | http://journal.sops.gov.ua/article/view/58699 |
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