The physiological and biochemical bases of seed dormancy in Lolium rigidum (annual ryegrass) are largely unknown, and study of this process is complicated by the outcrossing nature of the species and the strong influence of environment on seed dormancy. In order to identify heritable biochemical factors contributing to seed dormancy in L. rigidum, seeds from a field-collected population were us...

Seed dormancy is a key adaptive trait in plants responsible for the soil seed bank. The long established hormone-balance theory describes the antagonistic roles of the dormancy promoting plant hormone abscisic acid (ABA), and the germination promoting hormone gibberellin (GA) in dormancy control. Light, temperature, and other dormancy-breaking signals function to modulate the synthesis and perc...

Research Highlights: This study is focused on the germination of Dracaena steudneri Schweinf. Ex Engl. seeds using different presowing treatments. Background and Objectives: The aimed to overcome problem breaking seed dormancy, facilitate artificial regeneration for conservation development purposes. objectives this were (1) evaluate effect treatments in dormancy D. (2) assess collection method...

one of the major problems in reproduction of potato minitubers, is the low germination due to dormancy period that it’s led to low germination percentage, vigor and rot of tubers planted. therefore a factorial experiment based on the completely randomized design with three replications was carried out with a topic of the effects of application of rindite in various concentrations (0, 0.2, 0.4 a...

Potato (Solanum tuberosum L.) cv. Eshu 10 was used to investigate the effects of exogenous gibberellic acid (GA3), abscisic (ABA), and low-temperature stress on changes hormone content, expression patterns StTCP15 gene, tuber dormancy characteristics. Under GA3 treatment stress, broken in about one week sooner compared with control group, but ABA did not significantly promote breaking dormancy....

to study the effect of some varying treatments including such environmental factors as temperature, moisture, and light as well as plant growth regulators on breaking dormancy of datura stramonium l. seeds, several experiments were conducted. seeds of datura stramonium l. possess full dormancy immediately following harvest. storing the seeds for 3 months (15 dec. 2005 to 15 march 2006) at room ...

Dormancy breaking and germination requirements were determined for seeds of the eastern North American (eNA) species Sanicula canadensis, Sanicula gregaria and Sanicula trifoliata, and the data compared to those available for the European–Asian (EurA) congener Sanicula europaea. Seeds of the three eNA species had underdeveloped embryos that were physiologically dormant, i.e., morphophysiologica...