J Integr Plant Biol. ›› 1957, Vol. 6 ›› Issue (3): -.

• Research Articles •    

On the Structure of the Siliques based ,upon the Teratological Material

C. Yen   

Abstract: Some interesting teratological materials of Brassica chinensis L. var, oleifera Makino, Brassica oleracea L. var. capitata L. and var. botrytis L. were collected by the author in 1955–1956. These materials confirmed the four carpels theory of Cruciferae, which has been proposed by Eames, Wilson and Sanders. The samples show that siliques are formed by two whorls of carpels. The two carpels of upper set are fertile, with the locull disappearing. The two carpels of the lower set, valve-like structure are sterile. They enclose the ovules of their upper set carpels, where the loculi of silique are formed. The rolled and constricted tip of the upper set carpels forms the style and the stigma. The original number of floral leaves of each whorl is four, and the two-leaf whorls are degenerated types. The septum is formed by a bridge which connects the epidermis and parenchyma, situated along the adaxial and longitudinal line of the two fertile carpels. The fact that the integument (or ovule) is formed by the lobe (or lateral primordial branch) of the blade has also been confirmed by the present observations.

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