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The caruncle of Ricinus communis L. (castor bean): its development and role in seed hydration, rehydration, and germination


, : The caruncle of Ricinus communis L. (castor bean): its development and role in seed hydration, rehydration, and germination. International Journal of Plant Sciences 157(1): 40-48

The cytophysiology of the caruncle of Ricinus communis Hale was studied from 5 d after pollination until seed maturity. The caruncle consists of epidermal and parenchyma cells. The surface area of the epidermal cells increased from 10 to 15 d after pollination (DAP), but did not change significantly after 15 DAP, whereas the size of the parenchyma cells increased and their walls thickened during seed development.

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Related references

Bianchini, M.; Pacini, E., 1996: The caruncle of Ricinus communis L Its development and role in seed dehydration, rehydration, and germination. The cytophysiology of the caruncle of Ricinus communis was studied from the fifth day after pollination until seed maturity. The caruncle consists of epidermal and parenchyma cells. The surface area of the epidermal cells increased between 10 and...

Patane, C.; Sortino, O.; Abbate, V., 1996: Assessment of germination characteristics of castor bean (Ricinus communis L.) seed given osmotic pretreatment for autumn-winter sowing. In field trials at Pozzallo-Ragusa on the east coast of Sicily, R. communis cv. Iscior 110 and Hazera 22 seeds which were untreated or pretreated with aerated PEG solution were sown in November, January, March or May in 1992/93 and December, Febru...

Greenwood, J.S.; Bewley, J.D., 1982: Seed development in Ricinus communis (castor bean). I. Descriptive morphology. The morphology of developing R. communis L. cv. Hale seed was studied from fertilization to quiescence, a period of .apprx. 60 days under the growth conditions used. Fresh and dry weights and dimensions of the whole seed, endosperm and embryo were...

Greenwood, J.S.; Bewley, J.D., 1982: Seed development in ricinus communis castor bean 1. descriptive morphology. The morphology of developing R. communis L. cv. Hale seed was studied from fertilization to quiescence, a period of .apprx. 60 days under the growth conditions used. Fresh and dry weights and dimensions of the whole seed, endosperm and embryo were...

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Greenwood, J.; Bewley, J., 1985: Seed development in Ricinus communis cv. Hale (castor bean). III. Pattern of storage protein and phytin accumulation in the endosperm. Canadian journal of botany = Journal canadien de botanique 63(12): 2121-2128

Greenwood, J.S.; Bewley, J.D., 1985: Seed development in ricinus communis cultivar hale castor bean iii. pattern of storage protein and phytin accumulation in the endosperm. The development of the endosperm of castor bean seed from its initial free nuclear state through to the end of maturation is presented. An investigation of the pattern of reserve accumulation in the endosperm at the light microscopy level revealed...

Yamamotk T.; Shimoda T.; Funatsu G., 1982: Carboxy peptidase of castor bean ricinus communis endosperm during germination. Carboxypeptidase (CPase) in the endosperm of castor bean (R. communis L.) had high activity at days 4 and 7 of germination. From the behavior of CPases on CM-cellulose column chromatograppy, the early stage CPases, which appeared before 4 day germ...

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