Results 41 to 50 of about 4,773,873 (317)

The Evolution of Self-Fertilization in Density-Regulated Populations [PDF]

open access: yes, 2002
We study the evolution of selfing in hermaphrodites to reveal the demographic conditions that lead to intermediate selfing rates. Using a demographic model based on Ricker-type density regulation we first assume that independent of population density ...
Cheptou, P.-O., Dieckmann, U.
core   +2 more sources

DNA amplified fingerprinting, a useful tool for determination of genetic origin and diversity analysis in Citrus [PDF]

open access: yes, 1995
We used three short repetitive nucleotide sequences [(GTG)5, (TAC)5, and (GACA)4] either as radiolabeled probes for hybridization with restricted Citrus DNA or as single primers in polymerase chain reaction amplification experiments with total genomic ...
Asif, M   +7 more
core   +2 more sources

Self-fertility in Pseudomonas aeruginosa [PDF]

open access: yesJournal of General Microbiology, 1956
SUMMARY: Two interfertile strains of Pseudomonas aeruginosa were re-examined for evidence of self-fertility. One strain was self-fertile, the frequency of recombination being affected by the manner in which the parent organisms were grown before being combined. The other strain gave no evidence of self-fertility.
openaire   +2 more sources

Reproductive success through high pollinator visitation rates despite self incompatibility in an endangered wallflower [PDF]

open access: yes, 2016
PREMISE OF THE STUDY: Self incompatibility (SI) in rare plants presents a unique challenge—SI protects plants from inbreeding depression, but requires a sufficient number of mates and xenogamous pollination. Does SI persist in an endangered polyploid? Is
Herman, Julie A.   +6 more
core   +2 more sources

Plant Mating Systems Often Vary Widely Among Populations

open access: yesFrontiers in Ecology and Evolution, 2018
Most flowering plants are hermaphroditic, yet the proportion of seeds fertilized by self and outcross pollen varies widely among species, ranging from predominant self-fertilization to exclusive outcrossing.
Michael R. Whitehead   +4 more
doaj   +1 more source

The scale of population structure in Arabidopsis thaliana [PDF]

open access: yes, 2010
The population structure of an organism reflects its evolutionary history and influences its evolutionary trajectory. It constrains the combination of genetic diversity and reveals patterns of past gene flow.
A Rafalski   +50 more
core   +7 more sources

Connection of fertilization conditions of sour cherry and meteorological parameters

open access: yesInternational Journal of Horticultural Science, 2010
Our analyses showed that the degree of free fertilization is mostly influenced by maximum temperature and sunshine duration.We found that free fertilization ratio increases with higher daily maximum temperatures; similar results characterise sunshine ...
L. Lakatos   +5 more
doaj   +1 more source

Deciphering the genome structure and paleohistory of _Theobroma cacao_ [PDF]

open access: yes, 2010
We sequenced and assembled the genome of _Theobroma cacao_, an economically important tropical fruit tree crop that is the source of chocolate. The assembly corresponds to 76% of the estimated genome size and contains almost all previously described ...
Angé   +60 more
core   +2 more sources

Analysis of self-fertilization and meiotic behavior of eleven Brazilian triticale cultivars at two sowing dates [PDF]

open access: yesCrop Breeding and Applied Biotechnology, 2011
Eleven Brazilian hexaploid triticale cultivars (2n = 6x = 42), from three breeding programs, were evaluated for theirability of self-fertilization in 2006 and for meiotic behavior, meiotic index and pollen viability at two sowing dates in 2007 ...
Divanilde Guerra   +2 more
doaj  

Mixed Mating System Are Regulated by Fecundity in Shorea curtisii (Dipterocarpaceae) as Revealed by Comparison under Different Pollen Limited Conditions. [PDF]

open access: yesPLoS ONE, 2015
The maintenance of mixed mating was studied in Shorea curtisii, a dominant and widely distributed dipterocarp species in Southeast Asia. Paternity and hierarchical Bayesian analyses were used to estimate the parameters of pollen dispersal kernel, male ...
Naoki Tani   +13 more
doaj   +1 more source

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