Studies of Inheritance in Lespedeza cuneatu Don¹

Environmental and Genetic Determinants of Cleistogamy in a Natural Population of the Grass Danthonia spicata

“…(Correns, 1926(Correns, , 1930, Lespedeza cuneata (Bates and Henson, 1955;Cope and Moll, 1969) and Salpioglossis sinuata (Lee et al, 1976). Cleistogamy in Lamium and Salpioglossis appears to be determined in a simple Mendelian fashion while cleistogamy in Lespedeza is a multigenic trait (Cope and Moll, 1969) with a heritability estimated to be .36 (Bates and Henson, 1955) and .72 (Cope and Moll, 1969). These figures are similar to the heritabilities calculated here in the field (.53) and the greenhouse (.71).…”

“…The adjusted heritability is based on the assumption that the family and genotype variance are of the same relative magnitude as in the field raised plants ( Table 5). (Correns, 1926(Correns, , 1930, Lespedeza cuneata (Bates and Henson, 1955;Cope and Moll, 1969) and Salpioglossis sinuata (Lee et al, 1976). Cleistogamy in Lamium and Salpioglossis appears to be determined in a simple Mendelian fashion while cleistogamy in Lespedeza is a multigenic trait (Cope and Moll, 1969) with a heritability estimated to be .36 (Bates and Henson, 1955) and .72 (Cope and Moll, 1969).…”

“…Previous studies have shown that the proportion of chasmogamous and cleistogamous flowers produced by a given plant is an extremely plastic trait susceptible to modification by a large number of environmental factors including soil moisture, soil fertility, humidity, photoperiod, light intensity, plant density and grazing (Darwin, 1877;Uphof, 1938;Dyksterhuis, 1945;Harlan, 1945;Brown, 1952;Heslop-Harrison, 1959, 1960Levin, 1972;Schemske, 1978;Waller, 1980;Thompson and Beattie, 1981). In contrast, there are relatively few studies demonstrating genetic control of the degree of cleistogamy (Correns, 1926(Correns, , 1930Bates and Henson, 1955;Cope and Moll, 1969;Lee et al, 1976). Apparently there are no studies of both genetic and environmental control of the degree of cleistogamy in natural populations.…”

Comparative Flower Development in the Cleistogamous Species Viola Odorata. I. A Growth Rate Study

“…Seasonal changes appear to influence the production of CL flowers for many species (Maheshwari, 1962;Heslop-Harrison, 1965). Often both CH and CL floral forms are produced concurrently throughout the season with one type predominant during certain periods (Bates and Henson, 1955;Langer and Wilson, 1965;Lee, Erickson and Janick, 1978;Schemske, 1978;Lord, 1980). In the perennial cleistogamous species Viola odorata or sweet violet, CH or CL flowers are produced in an alternating cycle (Madge, 1929;Borgstrom, 1939).…”