Z varies between zero and one; it is one when the seeds germinate at the same time and zero when at least two seeds can germinate at distinct times (Ranal & Santana 2006).
4) allows us to understand the low synchrony of germination under both temperature regimes, since seeds did not germinate at the same time.
The seeds began to germinate on day seven and ended on day 25th.
Many hardy Asiatic and trumpet hybrids germinate this way, as do species lilies such as Lilium tigrinum, L.
Seed that is harvested early (before August) from lilies that germinate immediately, either above (epigeal) or below ground (hypogeal), should be sown at once to ensure bulb development before the onset of winter.
Such seeds may thus be able to germinate in particular years and seasons within years that best match their particular ecophysiology; that is, over evolutionary time, germination and postgermination traits may have adaptively coevolved (Evans and Cabin, 1995).
Direct investigation of this issue is difficult, because comparing the performance of seeds in the field that germinate in different seasons may be confounded by the different biotic and abiotic environments each cohort would encounter.
In Table III we see that the caryopsis (c) which is situated in the terminal spikelet germinates the poorest and the lowest one in the dispersal unit ([a.
In desert conditions of unpredictable amounts and distribution of rain, a plant species of which only a small portion of the seed population germinates after one rainfall has a better chance of surviving.
Other seeds have delicate structures that must be left intact for the seed to germinate.
Once Young gets a seed to germinate, ARS mathematician Debra E.
When he's tested samples in greenhouses, "they germinate
fantastically," von Willert says.