Evolutionary genomics model of chromosome number reduction and B chromosome production

Chromosome Number Variation in Iranian Populations of Acorus calamus

Different ploidy levels, diploid (2n=2x=24) to hexaploid (2n=6x=72) have been reported for Acorus calamus, a perennial medicinal plant. According to available information, there is a significant relationship between the ploidy level and essential oil compositions and medicinal properties of this important genetic resource. However, there is no information about the chromosome number of A. calam...

Morpho-phenology and chromosome number of Iranian Bromus danthoniae Trin. genotypes

ABSTRACT- Bromus danthoniae Trin. is an annual grass species which grows mainly on dry grassy rocky mountain slopes and grassy steppe, and is grazed by many herbivores and recognized as a useful pasture plant. The chromosome number, morphological and anatomical traits of 82 genotypes of B. danthoniae belonging to three sub-taxa were investigated. Twenty-seven quantitative and 20 qualitative mor...

Comparative Genomics Analysis of Rice and Pineapple Contributes to Understand the Chromosome Number Reduction and Genomic Changes in Grasses

Rice is one of the most researched model plant, and has a genome structure most resembling that of the grass common ancestor after a grass common tetraploidization ∼100 million years ago. There has been a standing controversy whether there had been five or seven basic chromosomes, before the tetraploidization, which were tackled but could not be well solved for the lacking of a sequenced and as...

The Chromosome Number of Maize.

Karyotype analysis and new chromosome number reports for nine Vicia species in Iran

This study concerns diploid chromosome numbers and karyotype analysis of nine species belonging to four sections (Vicilla, Cracca, Variegata and Anatropostylia) of the subgenus Vicilla of the genus Vicia (Fabaceae). The chromosome numbers of Vicia alpestris subsp. hypoleuca, V. aucheri, V. ciceroideae, V. gariensis, V. iranica, V. koeieana, V. rechingeri, V. sojakii and V. venulosa are reported...