Cytogenetical Studies in the Genus <i>Citrullus</i>, III. Bitter Substances in Fruits of <i>C. colocynthis</i> Schrad. and <i>C. vulgaris</i> Schrad

Cucurbitacins in plant food

“…Thus, bitterness seems to be controlled by a dominant gene. Similar observations indicating a dominant gene determining bitterness have been obtained also from studies on Wild Hanzil Medicinal cucumber of India (Barham, 1953(Barham, , 1954, the fruits of Lagenaria leucantha Singh, 1949, 1950), the fruits of Cucurbita pepo (Grebenščikov, 1954(Grebenščikov, , 1955, the fruits of Citrullus vulgaris (Arasimovic, 1937), and the fruits of Citrullus colocynthis (Shimotsuma and Ogawa, 1960).…”

Inheritance of Fruit Shape and Seed Size of Watermelon.

“…leaf shape (Mohr, 1953), dwarf (Liu and Loy, 1972), fruit shape (McKay, 1936 ;Poole and Grimball, 1945 ;Weetman, 1937), striping (Porter, 1937), rind color (Poole, 1944), flesh color (Shimotsuma, 1963), bitterness (Furusato and Miyazawa, 1957 ;Shimotsuma and Ogawa, 1960), seed coat color (Kanda, 1931), seed size (Poole, et al, 1941), disease resistance (Orton, 1907) and sex expression (Rosa, 1928). Although it appears paradoxical, seed size is an important consideration in the breeding of seedless watermelons as it affects their eating quality.The presence of empty seeds in seedless watermelons reduces their quality.…”