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Outcrossing in the Ryegrass ( Lolium spp .) as Determined by Fluorescence Tests 1
Author(s) -
Copeland L. O.,
Hardin E. E.
Publication year - 1970
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1970.0011183x001000030014x
Subject(s) - outcrossing , biology , lolium , agronomy , cultivar , poaceae , botany , pollen
Studies were conducted to determine the amount and distance of outcrossing between fluorescent and nonfluorescent strains of ryegrass. Both experimental spaced‐plant conditions and grower seed fields were investigated. There was substantially less crossing among plants grown in seed fields than in plots of spaced plants. Beyond 6 m from the border, outcrossing became negligible between all cultivars tested. Beyond 12 m from the border there was no evidence of crossing.