Publication Date
1985
Location
Kyoto Japan
Description
Chromosome number, method of reproduction and morphological characteristics were investigated in 14 species of the genus Chloris including Rhodes grass. Chromosome numbers of the Chloris species were 2n = 20 (gayana, roxburghiana, pilosa and virgata), 40 (gayana, pycnothrix, acicularis, radiata, polydactyla, divaricata and barbata), 80 (ciliata and distichophylla), 100 (castilloniana) and 120 (truncata). Method of reproduction was studied by embryo sac analysis. Embryo sacs of all tested species had eight nuclei, indicating sexuality. Selfed seed set indicated that Rhodes grass is cross-pollinated and the other species are self-pollinated. Cluster analysis was applied to numerical data of 26 morphological characters. Thirty-four strains tested were classified into 7 groups. Each group tended to have species with the same ploidy level. The stomata of truncata (12x), castilloniana (lOx) and distichophylla (8x) were the largest of all species tested. The relationships between ploidy levels and morphological characteristics were not always consistent.
Citation
Nakagawa, H and Sato, H, "Cytological and Morphological Characteristics of the Genus Chloris" (1985). IGC Proceedings (1985-2023). 53.
(URL: https://uknowledge.uky.edu/igc/1985/ses2/53)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Cytological and Morphological Characteristics of the Genus Chloris
Kyoto Japan
Chromosome number, method of reproduction and morphological characteristics were investigated in 14 species of the genus Chloris including Rhodes grass. Chromosome numbers of the Chloris species were 2n = 20 (gayana, roxburghiana, pilosa and virgata), 40 (gayana, pycnothrix, acicularis, radiata, polydactyla, divaricata and barbata), 80 (ciliata and distichophylla), 100 (castilloniana) and 120 (truncata). Method of reproduction was studied by embryo sac analysis. Embryo sacs of all tested species had eight nuclei, indicating sexuality. Selfed seed set indicated that Rhodes grass is cross-pollinated and the other species are self-pollinated. Cluster analysis was applied to numerical data of 26 morphological characters. Thirty-four strains tested were classified into 7 groups. Each group tended to have species with the same ploidy level. The stomata of truncata (12x), castilloniana (lOx) and distichophylla (8x) were the largest of all species tested. The relationships between ploidy levels and morphological characteristics were not always consistent.
