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Journal of Plant Production
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Badr,, M., El-Shennawy, O., Abdel-Fattah, R. (2000). BREEDING STUDIES ON Calendula SP.. Journal of Plant Production, 25(4), 2303-2314. doi: 10.21608/jpp.2000.258814
M. Badr,; Ola El-Shennawy; Rania Abdel-Fattah. "BREEDING STUDIES ON Calendula SP.". Journal of Plant Production, 25, 4, 2000, 2303-2314. doi: 10.21608/jpp.2000.258814
Badr,, M., El-Shennawy, O., Abdel-Fattah, R. (2000). 'BREEDING STUDIES ON Calendula SP.', Journal of Plant Production, 25(4), pp. 2303-2314. doi: 10.21608/jpp.2000.258814
Badr,, M., El-Shennawy, O., Abdel-Fattah, R. BREEDING STUDIES ON Calendula SP.. Journal of Plant Production, 2000; 25(4): 2303-2314. doi: 10.21608/jpp.2000.258814

BREEDING STUDIES ON Calendula SP.

Article 22, Volume 25, Issue 4, April 2000, Page 2303-2314  XML PDF (685.07 K)
Document Type: Original Article
DOI: 10.21608/jpp.2000.258814
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Authors
M. Badr,; Ola El-Shennawy; Rania Abdel-Fattah
Department of Floriculture, Ornamental Horticulture and Garden Design, Faculty of Agriculture, Alexandria University, Egypt
Abstract
The present work aimed to study a breeding method for two Calendula species, the cultivated species  Calendula officinalis and the wild species  Calendula micrantha. The study was concerned with the probability of hybridization between both species to obtain a hybrid plant with attractive flowers that needs less water requirements and maintenance, to be used as a ground cover or for flowerbeds in arid and semi-arid regions. This study was carried out in the Flowers and Ornamental Plants Research Gardens at the Faculty of Agriculture, Alexandria University from 1994 to 1997.
 A comparison between the two used species was carried out (growth habit, vegetative growth, flowering, carotenoid content in flowers, stomata, anthers, pollen grains, pollen fertility and relative distribution of DNA content).
 Crossing between both species took place and failed to produce hybrid seeds. Results indicated that adaptation had a significant effect on the growth and flowering of the wild Calendula species.
The comparison between the two Calendula species explained - to some extent - the failure of the crossing between both species regarding to their different genetical and anatomical structure. 
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