Ecogeography, demography, diversity and conservation of Phaseolus lunatus L. in the Central Valley of Costa Rica
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چکیده
منابع مشابه
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources.
Plant populations may experience local extinction and at the same time new populations may appear in nearby suitable locations. Species may also colonize the same site on multiple occasions. Here, we examined the impact of local extinction and recolonization on the genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica. We compared genetic di...
متن کاملPopulation genetic structure of wild Phaseolus lunatus (Fabaceae), with special reference to population sizes.
To set up an in situ conservation strategy for Phaseolus lunatus, we analyzed the genetic structure of 29 populations in the Central Valley of Costa Rica. Using 22 enzyme loci, we quantified the proportion of polymorphic loci (P(p)), the mean number of alleles per locus (A), and the mean effective number of alleles per locus (A(e)), which equaled to 10.32%, 1.10, and 1.05, respectively. The tot...
متن کاملSoil seed bank and seed dormancy in wild populations of lima bean (Fabaceae): considerations for in situ and ex situ conservation.
Seed dormancy and its impact on the soil seed bank for wild Lima bean (Phaseolus lunatus) populations were studied in the Central Valley of Costa Rica. Five populations were selected in contrasted environments. In all cases, distribution of seeds in the soil was limited to 3 cm depth. No innate dormancy was observed but combination of hard seed coat and hilum opening controlled by environmental...
متن کاملMonitoring gene flow between wild relatives and landraces of common bean in Costa Rica
Introduction Gene flow is the spread of genetic material among populations and may constitute an important evolutionary force to create genetic variability. We study possible cases of gene flow in accessions of Phaseolus vulgaris L. collected in the Central Valley of Costa Rica (Araya et al. 2001), The present study aims to establish the movement of genes in the complex wild/weed/cultivated of ...
متن کاملاﺛﺮ ﺗﻨﺶ ﺧﺸﻜﻲ و محلولپاشی اسید هیومیک ﺑﺮ ﺑﺮﺧﻲ از ﺷﺎﺧﺺﻫﺎی ﻓﻴﺰﻳﻮﻟﻮژﻳﻜﻲ لوبیا لیما (Phaseolus lunatus L.)
In order to investigate the effect of different levels of water deficit and foliar application of humic acid on the physiological characteristics of lima bean, a field experiment was arranged as split-split plot based on randomized complete block design with three replications in the research station of Shahrekord University in 2014. The main plot included four levels of drought stress (50, 70,...
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