It seems clear that the historical migration of Cannabis throughout much of the world for purposes of cultivation was accompanied by strong selection for local photoperiodic
control of the development of the LHRH neurosecretory system of European starlings (Sturnus vulgaris) during puberty and the onset of photorefractoriness.
Since day length is the same in a particular location year after year, but differs from place to place, mosquitoes in individual locales throughout the pitcher plants' range--from north Florida up to Manitoba, and from Nova Scotia across to Minnesota--have evolved separate photoperiodic
clocks to regulate their life cycles.
Pineal gland: interface between the photoperiodic
environment and the endocrine system.
October, add this step: place the photoperiodic
Poinsettia in a dark
all do so during the bulhenjip season, possibly as sensitive photoperiodic
Tenders are invited for Sitc Of Plant Tissue Culture Trolleys, Photoperiodic
Timers And Switching Units At Nipgr.
As discussed above, the two kinds of fiber plant that have been recognized taxonomically have been widely hybridized, by legal breeders, because of the resulting heterosis (hybrid vigor); and the two kinds of narcotic plant that have been recognized have been widely hybridized (mostly illicitly) to provide for the different psychological states that many have come to appreciate, and also to generate plants with desired photoperiodic
and size characteristics to meet local needs.
rhythm of egg hatching was found in either species.
Plants were grown on racks with 16 h light/ 8 h dark photoperiodic
regime, under 24 [+ or -] 2[degrees]C temperature.
influences on seasonal breeders depend mostly on the latitude at which they are kept.
response of two newly established populations of the great Mormon butterfly, Papilio memnon L.