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Improving seedless kelp (Saccharina japonica) during its domestication by hybridizing gametophytes and seedling-raising from sporophytes Li, X.; Zhang, Z.; Qu, S.; Liang, G.; Sun, J.; Zhao, N.; Cui, C.; Cao, Z.; Li, Y.; Pan, J.; Yu, S.; Wang, Q.; Li, X.; Luo, S.; Song, S.; Guo, L.; Yang, G. (2016). Improving seedless kelp (Saccharina japonica) during its domestication by hybridizing gametophytes and seedling-raising from sporophytes. NPG Scientific Reports 6(21255): 9 pp. http://dx.doi.org/10.1038/srep21255 In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322

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Beschikbaar in	Auteurs
VLIZ: Open access 286613 [ download pdf ]

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Trefwoord

Marien/Kust

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Auteurs		Top
Li, X. Zhang, Z. Qu, S. Liang, G. Sun, J. Zhao, N.	Cui, C. Cao, Z. Li, Y. Pan, J. Yu, S. Wang, Q.	Li, X. Luo, S. Song, S. Guo, L. Yang, G.

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Abstract

Dongfang no.7 (Saccharina japonica) was bred and maintained by hybridizing gametophytes, self-crossing the best individuals, selecting the best self-crossing line and seedling-raising from yearly reconstructed sporophytes. It increased the air dry yield by 43.2% in average over 2 widely farmed controls. Dongfang no.7 was seedling-raised from bulked sporophytes reconstructed from its representative gametophyte clones. Such strategy ensured it against variety contamination due to possible cross fertilization and occasional mixing and inbred depletion due to self-crossing number-limited sporophytes year after year. It derived from an intraspecific hybrid through 4 rounds of selfcrossing and selection and retained a certain degree of genetic heterozygosity, thus being immune to inbred depletion due to purification of unknown detrimental alleles. Most importantly, it can be farmed in currently available system as the seedlings for large scale culture can be raised from reconstructed Dongfang no.7 sporophytes. Breeding and maintaining Dongfang no.7 provided a model that other varieties of kelp (S. japonica) and brown algae may follow during their domestication.

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