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STUDIES ON THE EFFECT OF POLLINATION ON THE YIELD AND RESIN CONTENT OF HOPS ( HUMULUS LUPULUS L.)
Author(s) -
Thomas G. G.,
Neve R. A.
Publication year - 1976
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1976.tb03720.x
Subject(s) - humulus lupulus , pollination , hop (telecommunications) , yield (engineering) , acre , horticulture , biology , botany , mathematics , agronomy , chemistry , materials science , pollen , computer network , pepper , computer science , metallurgy
Pollination trials in otherwise male‐free hop gardens are described. The results showed that a reduction in cone yield of up to 30% may be expected from seedless hops, but an increase in α‐acid content of the cones more or less compensates for this yield reduction and the yield of α‐acid per acre can be almost as high from seedless as seeded hops. Northern Brewer, in particular, performed better than other varieties when grown seedless but most of the high α‐acid varieties gave reasonable results. It is suggested that the variation in response may depend on the number of resin glands present on the seeds of the different varieties, and differences in the distribution of resin glands on other parts of the cone.