title: B chromosome selection in rye.
abstract: As a consequence of selection the distribution and frequency of B chromosomes varies among survivors of rye seedlings planted in different environments. The mean B frequency per plant decreased under conditions of "high" as compared with "low" density of planting. Differences in weather and soil type between two sites also caused a significant shift in the distribution and frequency of B chromosomes.
authors.affiliation: Department of Agricultural Botany, U.C.W., Aberystwyth, Wales, UK.
authors.forename: H
authors.initials: H
authors.lastname: Rees
authors.forename: U
authors.initials: U
authors.lastname: Ayonoadu