| 1. |
- Karlsson Strese, Else-Marie, et al.
(författare)
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Den svenska humlens ursprung
- 2012
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Ingår i: Svensk Botanisk Tidskrift. - Uppsala : Svenska Botaniska föreningen. - 0039-646X. ; 106:3-4, s. 165-176
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 2. |
- Karlsson Strese, Else-Marie, et al.
(författare)
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Genetic Diversity in Remnant Swedish Hop (Humulus lupulus L.) Yards from the 15th to 18th Century
- 2014
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Ingår i: Economic Botany. - : Springer. - 0013-0001 .- 1874-9364. ; 68:3, s. 231-245
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Tidskriftsartikel (refereegranskat)abstract
- Hop (Humulus lupulus L.) is a perennial plant cultivated for its use in beer production. The plant is dioecious, and the female plants produce cones containing substances that enhance the taste and durability of beer. Beer was long an essential part of food supply in Northern Europe, and hop has thus been a very important crop during the last 1,000 years. In Sweden, hop cultivation was, by law, mandatory for farmers from 1414 till 1860. Today, Swedish hop cultivation is negligible, but historical remnant hop plants can still be found as feral populations. Using historical maps and documents, we have located ten historical hop yards from the 15th to 18th century where hop plants still persist as now feral populations. Some fifteen plants of each population were sampled and genotyped with ten SSR markers and one marker diagnostic for sex type. In addition, 25 genebank preserved clones of older landraces and cultivars from Europe were genotyped. Genotyping results show abundant clonality and low rates of sexual reproduction within the feral populations. Two of the populations had markedly higher genetic diversity and a higher number of haplotypes, and in these populations a mix of female and male plants was also found. The populations were all clearly differentiated, with no haplotypes shared between populations and little evidence of exchange of genetic material. These results indicate that natural spread and genetic recombination is uncommon or slow in Sweden, and that the feral plants could be remnants of the original historical cultivations. In the assembly of European genebank clones, several clones showed identical genotypes and overall limited genetic diversity. The Swedish populations were in most cases genetically clearly different from the genebank clones. This contrasts with historical records of massive introductions of hop clones from continental Europe during the 19th century and shows that these imports did not replace the original hops being cultivated. A possible better adaption of the Swedish hops and primitive historical breeding are discussed.
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| 3. |
- Karlsson-Strese, Else-Marie, et al.
(författare)
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Humle : det gröna guldet
- 2015
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- I denna rikt illustrerade bok betraktas humlen utifrån ett sammansatt biologiskt och historiskt perspektiv. Innehållet spänner från växtens kemi, genetik och historiska utbredning till odling, ölproduktion och nya användningsområden. Djupast handlar framställningen om att den nära relationen mellan människan och kulturväxterna styrs av såväl biologiska och ekonomiska som politiska och sociala faktorer.
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| 4. |
- Karlsson-Strese, Else-Marie, et al.
(författare)
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Pion - Paeonia-arter
- 2005
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Ingår i: Människan och floran. - Stockholm : Wahlström & Widstrand. - 9146177892 ; , s. 312-312
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Leino, Matti W., 1976-, et al.
(författare)
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DNA preservation and utility of a historic seed collection
- 2009
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Ingår i: Seed Science Research. - Cambridge : Cambridge University Press. - 0960-2585 .- 1475-2735. ; 19:3, s. 125-135
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Tidskriftsartikel (refereegranskat)abstract
- Historic collections of biological material are important genetic resources for taxonomic, evolutionary and historical research. In this paper we describe a seed collection dating from 1862 to 1918 maintained at the Swedish Museum of Cultural History. The collection contains over 3000 well-documented seed samples of various agricultural crops, mostly cereals. A subset of 100 samples divided over ten species frequently represented in the collection and a range of ages were tested for germinability and DNA preservation. None of these accessions were found to contain viable seeds. DNA extracted from the seeds was degraded, but the amount of degradation varied between species. DNA quality was evaluated by yield, fragment size and size of amplification product. Quality was highest for DNA extracted from Pisum sativum and Vicia sativa. DNA extracted from Brassica napus, Beta vulgaris and Trifolium pratense was more fragmented, and DNA extracted from Triticum aestivum, Secale sereale, Hordeum vulgare, Avena sativa and Phleum pratense was most degraded. Polymerase chain reaction (PCR) amplification of ribosomal DNA fragments of up to 700 bp was permitted for most samples in all species. To test whether single-copy nuclear genes could be amplified from the extracted DNA, microsatellite markers were used on the Pisum sativum and Hordeum vulgare samples. Polymorphisms of microsatellite markers were detected between samples for both species. The results show that the 19th-century seed collection can be utilized to infer genetic relationships among obsolete cultivars as well as for other types of genetic research based on sequence or marker analysis.
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| 6. |
- Leino, Matti W., 1976-, et al.
(författare)
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Patterns of Exchange of Multiplying Onion (Allium cepa L. Aggregatum-Group) in Fennoscandian Home Gardens
- 2018
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Ingår i: Economic Botany. - : Springer Science and Business Media LLC. - 0013-0001 .- 1874-9364. ; 72:3, s. 346-356
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Tidskriftsartikel (refereegranskat)abstract
- Multiplying onion (Allium cepa L. Aggregatum-Group), commonly known as shallot or potato onion, has a long tradition of cultivation in Fennoscandian home gardens. During the last decades, more than 80 accessions, maintained as vegetatively propagated clones, have been gathered from home gardens in all Fennoscandian countries. A genetic analysis showed regional patterns of accessions belonging to the same genetic group. However, accessions belonging to the same genetic group could originate in any of the countries. These results suggested both short- and long-distance exchange of set onions, which was confirmed by several survey responses. Some of the most common genetic groups also resembled different modern varieties. The morphological characterization illustrated that most characters were strongly influenced by environment and set onion properties. The only reliably scorable trait was bulb skin color. Neither our morphological nor genetic results support a division between potato onions and shallots. Instead, naming seems to follow linguistic traditions. An ethnobotanical survey tells of the Fennoscandian multiplying onions as being a crop with reliable harvest, excellent storage ability, and good taste. An increased cultivation of this material on both household and commercial scale should be possible.
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| 7. |
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