In variable environments, organisms must have strategies to ensure fitness as conditions change. For plants, germination can time emergence with favourable conditions for later growth and reproduction (predictive germination), spread the risk of unfavourable conditions (bet hedging) or both (integrated strategies). Here we explored the adaptive value of within- and among-year germination timing...

The mechanism by which L-proline triggers germination in Bacillus megaterium QM B1551 spores was investigated. First, brief exposure of spores to L-proline, followed by dilution, was sufficient to trigger germination. Once germination was triggered, the spores continued initiation of germination and did not require high concentrations of L-proline. Triggering of germination was pH and temperatu...

ABSTRACT Cactus seeds in seasonal dry tropical forests are subject to several stressors, such as salt stress which limits imbibition and therefore germination. Thus, this study aimed compare germination performance of Cereus jamacaru subsp. Pilosocereus pachycladus pernambucoensis under salinity conditions. To end, NaCl KCl solutions were used the following osmotic potentials: 0.0 (control),-0....

A combination of salicylhydroxamic acid (SHAM) + cyanide (CN) is known to stimulate dark germination of Lactuca sativa L. seeds. Further studies were done to characterize SHAM and CN action in stimulating dark germination of lettuce seed. Germination was stimulated slightly by either SHAM or CN, whereas when SHAM and CN were combined germination was greatly enhanced. Treatment of seeds with ...

Germination timing is a fundamental life-history trait, as seedling establishment predicates realized fitness in the wild. Light and temperature are two important cues by which seeds sense the proper season of germination. Using Arabidopsis thaliana, we provide evidence that phytochrome-mediated germination pathways simultaneously respond to light and temperature cues in ways that affect germin...

ABSTRACT Sunn hemp (Crotalaria spectabilis) is widely used for soil correction and cover, but it still necessary to know the characteristics that influence storage of its seeds. This study aimed evaluate physiological quality sunn seeds under uncontrolled environmental conditions in acclimatization chamber. A completely randomized experimental design was used, with four replicates, subplots eva...

In order to evaluate the effect of hydropriming and Salinity stress on germination indices Niger, a factorial experiment was conducted in randomized complete block design with four replications at seed research laboratory Shahrekord University. treatments were applied five levels (0, 25, 50, 100 150 mM NaCl). Hydropriming two (control 6-hour distilled water). Results showed that effects water s...

Seed quality includes three aspects, namely genetic quality, physical and physiological quality. Physiological is an aspect of seed as indicated by viability vigor. This study aims to analyze the effect different types sound exposure on early growth corn seeds, long maize seeds. The research was carried out in laboratory Faculty Agriculture, Teuku Umar University. September 20 - October 19, 201...