Heredity and variability in seed characters of Ricinus communis [Philippines]
1981
Blancaver, A. T. (Central Mindanao Univ., Musuan, Bukidnon (Philippines). Dept. of Biology)
The five varieties of castor bean showed intra- and inter-varietal variations in seed characters. Among big-seeded varieties, seed color is more variable than seed size. Variability in seed color and seed size was manifested in almost continuous series. The colors and shades of the seeds as a whole, are the combined effects of colors and shades of the individual plants. Seed size has no influence on the percentage of oil content. Compactness of the kernels of the seeds is a good indication of higher oil content. The big-seeded varieties have more compact kernels. The primary spikes of the five castor bean varieties mature almost at the same time ranging from 57 to 61 days from the date of flowering, except Lamao Red which matured 33 days from flowering. The Bangkok varieties and Cimarron are fairy non-dehiscent and their spikes could be harvested when all the capsules are fully matured without the danger of shattering out of seeds. Lamao Red is highly dehiscent.
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