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  • 1
    Online Resource
    Online Resource
    Walter de Gruyter GmbH ; 2014
    In:  Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Vol. 68, No. 3-4 ( 2014-8-1), p. 142-147
    In: Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences., Walter de Gruyter GmbH, Vol. 68, No. 3-4 ( 2014-8-1), p. 142-147
    Abstract: Darba mçríis bija uzlabot dubultoto haploîdu (DH) lîniju iegûðanas metodiku ar putekðnîcu kultûru palîdzîbu Latvijâ svarîgiem graudaugiem: mieþiem, vasaras un ziemas kvieðiem. Kâ izejas materiâls pçtîjumam kalpoja F1 un F2 paaudzes selekcionâru iegûtie hibrîdi. Pçtîjuma rezultâti parâdîja, ka vara sulfâta pievienoðana koncentrâcijâ 2,5 mg/l mieþu pirmapstrâdes barotnei un gan mieþu (C3), gan kvieðu (ðíidrâ AMC) kallusu indukcijas barotnçm paaugstina zaïo augu-reìenerantu iznâkumu. Liela skaita DH lîniju iegûðanu ar putekðnîcu kultûras palîdzîbu var organizçt divos etapos: pirmajâ nosaka hibrîdu atsaucîbu putekðnîcu kultûrâ un otrajâ masveidâ izmanto tikai atlasîtos hibrîdus ar augstu spçju veidot zaïus augus-reìenerantus
    Type of Medium: Online Resource
    ISSN: 1407-009X
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2014
    detail.hit.zdb_id: 2487550-8
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  • 2
    Online Resource
    Online Resource
    Rezekne Academy of Technologies ; 2015
    In:  Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference Vol. 1 ( 2015-08-06), p. 149-
    In: Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference, Rezekne Academy of Technologies, Vol. 1 ( 2015-08-06), p. 149-
    Abstract: Flax breeding is a long and complicated process based on hybridization and following selection of the best plants. Because of possible occasional cross-pollination the development of genetically stable homozygous lines could last more than 15 years. For more rapid creating of initial material for flax breeding anther culture methods for producing doubled haploid (DH) lines could be used successfully. The goal of this study was to develop the best anther culture protocol for producing DH lines from hybrids included in Latvian flax breeding programme and to do preliminary field evaluation of obtained DH lines. F4 hybrids were used in the experiment. Method, most applicable for establishing of DH from anther cultures, was elaborated; 13 DH lines were obtained during the experiment. Such agronomic important traits, as vegetation period, total plant height, number of seed vessels, number of seeds in a seed vessel, 1000 seeds weight, oil and bast fibre content were evaluated for obtained DH lines. Several accessions showed high 1000 seeds weight, number of seeds in a seed vessel, good oil and bast fibre content. It was concluded that anther culture method is of value of using as an adjunct to classical methods of flax breeding.
    Type of Medium: Online Resource
    ISSN: 2256-070X , 1691-5402
    Language: Unknown
    Publisher: Rezekne Academy of Technologies
    Publication Date: 2015
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  • 3
    Online Resource
    Online Resource
    Walter de Gruyter GmbH ; 2018
    In:  Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Vol. 72, No. 6 ( 2018-12-01), p. 341-348
    In: Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences., Walter de Gruyter GmbH, Vol. 72, No. 6 ( 2018-12-01), p. 341-348
    Abstract: According to the Global Strategy for Plant Conservation, 75% of endangered species should be preserved in ex situ collections till 2020. The genus Liparis has a lot of recognised taxons, but only one species, Liparis loeselii (L.) Rich., grows in Europe. L. loeselii is a rare and endangered orchid species occurring in Europe. In Latvia L. loeselii is classified as the third category of endangered and protected species. To develop the best conservation strategy, the knowledge concerning the genetic differences of protected plants in a particular area is crucial. For this purpose, the genetic diversity of L. loeselii populations from different Latvian habitats was tested. The inter-retrotransposon amplified polymorphism method (iPBS) was used for population genetic diversity evolution. In total, 54 accessions from nine habitats were collected and analysed. L. loeselii leaves have a high content of phenols that reduce the quality of extracted DNA. It was found that the percentage of polymorph loci varied among the populations of L. loeselii growing in different habitats; some of the populations were genetically homogeneous. The genetic diversity levels of L. loeselii populations are related with the population age and the growing conditions.
    Type of Medium: Online Resource
    ISSN: 1407-009X
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2018
    detail.hit.zdb_id: 2487550-8
    Library Location Call Number Volume/Issue/Year Availability
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