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Meiotic Irregularities and Potential Seed Production of Dactylis glomerata L., Bromus inermis Leyss., and Phleum pratense L. at Different Locations 1
Author(s) -
Hill Helen D.,
Hovin A. W.
Publication year - 1964
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/cropsci1964.0011183x000400010024x
Subject(s) - dactylis glomerata , phleum , bromus inermis , biology , pasture , bromus , crop , forage , agronomy , poaceae
SEED production of perennial forage grasses is known to vary from year to year and from one location to another for the same clone. The purpose of this study was to obtain a measure of meiotic irregularities of clones of orchardgrass (Dactylis glomerata L.), smooth brome (Bromus inermis Leyss.), and timothy (Phleum pratense L.) grown at different locations in the western United States and to relate such irregularities to seed production potential. Because number of micronuclei in quartets has been found to be related to meiotic irregularities in orchardgrass (5), in smooth brome (1, 2), and in timothy (6), micronuclei in quartets were used as an index of meiotic irregularities. Percent of florets setting seed has been shown to be highly significantly correlated with seed yield in smooth brome (7), r = 0.74, and may be used to express potential seed production.