SEED MORTALITY IN DAUCUS CAROTA POPULATIONS: LATITUDINAL EFFECTS
نویسندگان
چکیده
منابع مشابه
Seed Mortality in Daucus Carota Populations: Latitudinal Effects1 Elizabeth
Daucus carota, a common herbaceous weed, grows over a wide latitudinal range in eastern North America. Viability and germination tests of mature seeds collected from 36° to 45°N were conducted to measure predispersal seed mortality. Viability and germination declined as latitude of the seed source decreased. Only 30-50% of the seeds from southern populations germinated owing to high embryo invi...
متن کاملAnti-Dementia Potential of Daucus carota Seed Extract in Rats
Daucus carota Linn. commonly known as “carrot" belongs to the family Apiaceae (Umbelliferae) and is cultivated almost all over the world as a useful vegetable. Carrot is widely consumed as an aphrodisiac and nervine tonic and its scraped root is used as a local stimulant for indolent ulcers. In light of the above, the present study was undertaken to investigate the effects of D. carota seeds on...
متن کاملTiming of seed dispersal in Daucus carota By: Elizabeth P. Lacey Lacey, E. P. (1982) Timing of seed dispersal in Daucus carota L. (Apiaceae)
This study describes the temporal pattern of seed dispersal in Daucus carota and examines the fate of seeds dispersed at different dates in SE Michigan. Plants varied greatly in both time of onset and rate of dispersal. Onset was directly related to flowering time, a phenotypically plastic character, and tended to occur earlier in newly established populations. Dispersal rate was similar for di...
متن کاملPervasive Mitochondrial Sequence Heteroplasmy in Natural Populations of Wild Carrot, Daucus carota spp. carota L
Exceptions to the generally accepted rules that plant mitochondrial genomes are strictly maternally inherited and that within-individual sequence diversity in those genomes, i.e., heteroplasmy, should be minimal are becoming increasingly apparent especially with regard to sequence-level heteroplasmy. These findings raise questions about the potential significance of such heteroplasmy for plant ...
متن کاملLowering of intraocular pressure by topical application of Daucus carota seed extract in rabbits.
In normotensive rabbits topical application of Daucus carota seed extract at the concentration of 0.3, 0.6 and 1.2% resulted in mean IOP reduction of 19.33. 23.20 and 25.61% respectively from baseline. As no significant difference was observed between the change in IOP in 0.6 and 1.2% extract treated groups, 0.6% concentration was chosen for further evaluation in rabbits with experimentally ele...
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ژورنال
عنوان ژورنال: American Journal of Botany
سال: 1984
ISSN: 0002-9122,1537-2197
DOI: 10.1002/j.1537-2197.1984.tb11972.x