A study of the variation in seedlings of the wild hop (Humulus lupulus L.)

Salmon, E. S.; Wormald, H.

doi:10.1007/bf02983062

Cited by 5 publications

(5 citation statements)

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“…Cone shape is one of the most important quality traits in hop breeding (Wormald 1915, Schmidt 1917, Salmon and Wormald 1921, Blattny 1950, Davis 1957, Ono 1961, Wagner 1974, 1975, Rybáček 1980, Kišgeci et al 1984, Schattenhofer 1989, Barth et al 1994, Henning et al 1997, Moir 2000, Rígr and Faberová 2000 Hampton et al 2001, Hampton et al 2002, Srečec 2004, Nesvadba 2007.…”

Section: Resultsmentioning

confidence: 99%

“…In the past century, investigations concerning wild hops became more intensive (Wormald 1915, Schmidt 1917, Salmon and Wormald 1921, Blattny 1950, Davis 1957. However, the most important studies of wild hops related to this paper were provided by Wagner (1974Wagner ( , 1975 who described 398 hop habitats in Pannonian, Alpine, Dinaric, PindoRhodopian, Carphato-Balkanian and Mediterranean macro-regions of former Yugoslavia.…”

mentioning

confidence: 99%

“…Studying of hop wild gene pool is of essential need for sustainability of hop production (Nesvadba 2007). Cytogenetic and molecular studies of wild hops have brighten up the phylogeny of hops (Ono 1961, Henning et al 1997, Hampton et al 2001, Hampton et al 2002, Jakše et al 2004, Murakami et al 2006, Lutz et al 2007, Nesvadba 2007, Probasco et al 2007, but a few authors reported on phenotypic variability of wild hop populations (Wormald 1915, Schmidt 1917, Salmon and Wormald 1921, Blattny 1950, Davis 1957, Ono 1961, Wagner 1974and 1975, Nesvadba 2007. However, phenotypic characterization of hop plants is the very first step that precedes the mentioned molecular analyses.…”

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confidence: 99%

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Phenotypic and alpha-acid content diversity of wild hop populations in Croatia

Srečec¹,

Zechner-Krpan²,

Petravić-Tominac³

et al. 2010

PLANT SOIL ENVIRON

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An ecogeographical survey of wild hop populations was conducted in the northwest of Croatia in two consecutive years. A total of 121 plants was documented on eight locations. Along with the passport data, the data on three phenotypic traits (no. of leaflets, cone shape, aroma) were gathered during collection, while the content of α-acids in hop cones was determined by lead conductance. Shannon's information index was calculated for each phenotypic trait and was used as a measure of intra-and inter-population diversity. For all analyzed traits, most of the total phenotypic diversity was attributable to differences among plants within populations. The differences in proportions of individuals having a particular trait state between all pairs of populations in the case of leaflet number and cone shapes were non-significant. Four out of 28 pairwise comparisons for aroma were proven significant, indicating the existence of differences in proportions of individuals across populations recorded to have 'typical hoppy' , 'fine hop' or 'rough' aroma. No significant differences were observed for α-acids content among populations. Plants exhibiting elongated cone shape had significantly higher α-acids content than those having oval or round cone shapes. Similarly, plants categorized as 'rough' aroma hop cones had the highest content of α-acids compared with those categorized as 'typical hoppy' or 'fine hop aroma' hop cones.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Phenotypic and alpha-acid content diversity of wild hop populations in Croatia

Srečec¹,

Zechner-Krpan²,

Petravić-Tominac³

et al. 2010

PLANT SOIL ENVIRON

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“…The American Wild Hop Wormald's (1915) careful study of Oregon male hops led him to believe that the Oregon hop was very different from the hops of England. Consequently, Salmon and Wormald (1921) suggested the retention of the separate species H.…”

Section: Whementioning

confidence: 99%

“…undertook an extensive examination of male hoos. Leaf color, , dimension of lobes, gland number and distribution were scored Salmon and Wormald (1921). studied time of flowering, color of stem, relative number of glands on the leaves, and on the cone; size, shape, aroma, and color of the cone axis Schmidt (1918).…”

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confidence: 99%