نتایج جستجو برای: tetraploids
تعداد نتایج: 420 فیلتر نتایج به سال:
Senecio carniolicus (Asteraceae) is an intricate polyploid complex distributed in the European Alps (di-, tetra- and hexaploids) and Carpathians (hexaploids only). Molecular genetic, ecological, and crossing data allowed four evolutionary groups within S. carniolicus to be identified. Here, we establish that these four groups (two vicariant diploid lineages, tetraploids and hexaploids) are also...
Heat shock is an effective and widely used method for polyploid induction in fish, but has not been well studied in molluscs. In this study, heat shock was tested for polyploid induction through meiosis or mitosis inhibition in the dwarf surfclam, Mulinia lateralis Say. To determine the most effective temperature, different heat shocks (32, 35 and 38 8C) were applied to newly fertilized eggs at...
The loach (Misgurnus anguillicaudatus) is an excellent animal model to elucidate biological origin and evolutionary significance of genome duplication and unisexual reproduction because artificially induced and naturally occurring polyploids and parthenogenetic (gynogenetic, androgenetic) animals can be compared. First, we summarize the chromosome manipulation techniques to induce triploids and...
ABSTRACT In this study, ploidy levels were determined by stomatal observations and flow cytometry analysis of plants polyploidised the application 0.05% colchicine to seedlings at first true leaf stage. study developing polyploid watermelon rootstocks, survival rate was 77%, polyploidisation rates 11% 3% according analysis, respectively. According results cytometry, 22 genotypes determined. Aut...
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