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Germination of Freshly Harvested Seeds of Several Poa Species and of Dactylis Glomerata 1
Author(s) -
Sprague V. G.
Publication year - 1940
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/agronj1940.00021962003200090008x
Subject(s) - dactylis glomerata , germination , forage , citation , horticulture , biology , agronomy , political science , poaceae , law
terized by a dormant period daring which germination is greatly retarded or completely inhibited. Changes may take place after a storage period of several weeks or months which allow the seed to germinate normally. Plemion (3, 4), 8 Gassner (5), Ha-rrington (6), Haut (8), Kearns and Toole (9, ~o), Smith (~2), and Toole have shown that germination was increased by chilling the moistened dormant seed of several widely different species for varying lengths of time. Fivaz (2), Gassner (5), Harrington (7), Morinaga (~), others have shown that non-dormant seeds often germinate better under daily alternation of temperatures than under constant temperatures. In a cytogenetic or breeding study of any plant it is usually desirable to obtain successive generations as frequently as possible. This may necessitate germinating the seed as soon as it has been produced. In the cytogenetic program at the U. S. Regional Pasture Research Laboratory difficulty was encountered .in obtaining adequate germination of freshly harvested seeds4 of Poa pratensis L. several other Poa species, and Dactylis glomerata L. To develop simple technics which would induce prompt germination of the freshly harvested seed of these species, the following experiments were conducted.