Cytology and genetics of forage grasses

Cytomorphological Studies of the Biotypes OfPennisetum PedicellatumTrin.

“…Since the landmarking treatise of AvDULOV (1931) on the usefulness of chromosomal features in the phylogeny and classification of the grass family, this tool has been widely utilized by a number of workers (MEYERS 1947;STEBBINS 1956;TATEOKA 1960). These studies had mainly considered higher categories including tribes, families and even genera.…”

Systematic revision of the genus Sorghastrum (Poaceae: Andropogoneae)

“…First, to provide fundamental information for improvement of species by breeding. Second, to supplement morphological data in studies of taxonomy and phylogeny of the Gramineae (Myers, 1947). The latter is the main purpose of the chromosome number determination carried out in this dissertation.…”

“…secundum (Myers 1947;Garber 1950), S. elliottii (Brown 1950, Garber 1950, and S. nudlpes (Davila, Department of Botany, ISU). The species S. brunneum (Davila, Department of Botany, ISU) occurs in Mexico and Central America, and finally S. setosum (Saura 1944;Carnahan and Hill 1961;Davidse and Pohl 1972a;Pohl 1974, Pereira 1986) is distributed from Mexico to South America including the Caribbean.…”

Population biology of intraspecific polyploidy in grasses

“…Cytotypes of selected members Sutherland, 1986Myers, 1947Myers, 1947Myers, 1947Myers, 1947Hickman, 1993Sutherland, 1986Jones, 1958Richard et al, 1995von Bothmer & Jacobsen, 1986KankanpiUi et aI, 1996 Myers, 1947Myers, 1947Myers, 1947Sutherland, 1986Myers, 1947Sutherland, 1986Myers, 1947Myers, 1947Myers, 1947Myers, 1947Hickman, 1993Sutherland, 1947Myers, 1947Myers, 1947Sutherland, 1988Myers, 1947Sutherland, 1986Burton, 1942Myers, 1947;Quarin et al, 1982 Burton, 1942Myers, 1947Myers, 1947Myers, 1947Myers, 1947Myers, 1947Myers, 1947Sutherland, 1986…”

“…4n, 6n, 12n 2n,4n,6n,8n 2n,4n 2n,4n 2n,4n,6n 60, 70, 100 22,44,66,88 14,28,42 20,29,35,40,42,60,61,77,84 12,20,21,28,37,42,46 20,40,60 28,42 14,28,42 14,28,56,70,84 14,27,28,29,30,31,35,42,48 14,28 14,21,28 36,44,46,48,49-52,72,84,96 40,48,54,56,60,64,72,80,96,104, 112, 128 28,40,42,80,84 18, 36, 38, 72 14,28 14284n? 4n, 6n, 12n 2n,4n,6n,8n 2n,4n 2n,4n 2n,4n,6n 60, 70, 100 22,44,66,88 14,28,42 20,29,35,40,42,60,61,77,84 12,20,21,28,37,42,46 20,40,60 28,42 14,28,42 14,28,56,70,84 14,27,28,29,30,31,35,42,48 14,28 14,21,28 36,44,46,48,49-52,72,84,96 40,48,54,56,60,64,72,80,96,104, 112, 128 28,40,42,80,84 18, 36, 38, 72 14,28 142842 Nielsen, 1939Brown, 1950Hickman, 1993Hickman, 1993Fults, 1942Snyder & Harlan, 1953Fults, 1942Gould, 1958Sutherland, 1986Nielsen & Humphrey, 1937Myers, 1947Myers & Hill, 1947Hickman, 1993Hansen & Hill, 1953Hickman, 1993Hickman, 1993Hickman, 1993Panje & Babu, 1960A1-Janabi et aI., 1993Myers, 1947Sutherland, 1986Hickman, 1993Hickman, 1993Hickman, 1993Hickman, 1993 For ease of description I will outline the differences using diploids and tetraploids. Diploids are the basis on normal Mendelian genetics: each individual has two copies of each (non-duplicated) locus, and so can be heterozygous (a t a 2 ) or homozygous (aja!, or a 2 a 2 ).…”