Premium
Crossing of Smooth Bromegrass, Bromus inermis Leyss, in the Greenhouse 1
Author(s) -
MacKay K. H.,
Dunn G. M.
Publication year - 1957
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1957.00021962004900070005x
Subject(s) - emasculation , bromus inermis , greenhouse , panicle , agronomy , biology , pollen , bromus , fertility , pollination , poaceae , botany , population , demography , sociology
Synopsis Single‐crosses in smooth bromegrass can be obtained in the greenhouse by combining hot‐water emasculation with open pollination. All clones in a group are emasculated except the pollen parent. Groups can be isolated by placing each on long‐days at intervals of about 2 weeks. Immersing slightly immature panicles in water at 46° C. for 5 minutes provided effective emasculation. Maximum panicle production was obtained after 3 months of short‐days in a cool greenhouse. Cross‐fertility in the greenhouse was positively correlated with self‐fertility in the field. Yields of single‐cross seed were increased by spraying the seed‐parents with a fine mist at flowering.