Does sexual dimorphism exist in flowering phenology traits in anemophilous dioecious species? A test with Rumex acetosa
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چکیده
منابع مشابه
Correlation between investment in sexual traits and valve sexual dimorphism in Cyprideis species (Ostracoda)
Assessing the long-term macroevolutionary consequences of sexual selection has been hampered by the difficulty of studying this process in the fossil record. Cytheroid ostracodes offer an excellent system to explore sexual selection in the fossil record because their readily fossilized carapaces are sexually dimorphic. Specifically, males are relatively more elongate than females in this superf...
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Rumex acetosa is a dioecious plant with the XY1Y2 sex chromosome system. Both Y chromosomes are heterochromatic and are thought to be degenerated. We performed low-pass 454 sequencing and similarity-based clustering of male and female genomic 454 reads to identify and characterize major groups of R. acetosa repetitive DNA. We found that Copia and Gypsy retrotransposons dominated, followed by DN...
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Questions: Are there differences in whole-animal performance between the sexes, and what are the causes of this sexual dimorphism? Organisms: Humans, horses, greyhound dogs, pigeons, and lizards. Methods: We analysed performance records of human athletes, racehorses, greyhound dogs, racing pigeons, and lizards with respect to sexual dimorphism. Using the lizard data set, we correlated sexual di...
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This study estimated the magnitude of sexual dimorphism in a relict sheep from Catalunya (NE Spain), called Fardasca,using geometric morphometric techniques. For these analyses, a total of 18 skull specimens (2 adult males and 16 females) were studied. Our results suggest that the breed is not cranially dimorphic, so sex determination using landmarks described here as criteria is likely to yiel...
متن کاملRumex acetosa Y chromosomes: constitutive or facultative heterochromatin?
Condensed Y chromosomes in Rumex acetosa L. root-tip nuclei were studied using 5-azaC treatment and immunohistochemical detection of methylated histones. Although Y chromosomes were decondensed within root meristem in vivo, they became condensed and heteropycnotic in roots cultured in vitro. 5-azacytidine (5-azaC) treatment of cultured roots caused transitional dispersion of their Y chromosome ...
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ژورنال
عنوان ژورنال: American Journal of Botany
سال: 2019
ISSN: 0002-9122,1537-2197
DOI: 10.1002/ajb2.1355