J Integr Plant Biol. ›› 2006, Vol. 48 ›› Issue (5): -.DOI: 10.1111/j.1744-7909.2006.00278.x

• Research Articles •    

14CO2 Fixation and Translocation of Photoassimilates as Selection Criteria of Egyptian Taro Genotypes

Helal Ragab Moussa and Afaf Abd EI-Kader Salem   

Abstract: The growth characteristics, different physiological parameters, photosynthetic activity (14CO2 fixation), and the translocation rate of photoassimilates in different taro (Colocasia esculenta L. Schott) genotypes was studied in order to determine the possible use of these parameters as selection criteria for different widely used genotypes of taro (Delta No. 9, 15, 20, 21, and balady). The results obtained suggest that Delta No. 21 shows the most significant increase in all parameters tested compared with the control (balady), followed by Delta No. 9, 15, and 20, respectively. The results show a positive correlation between photosynthetic activity, translocation efficiency, and total yield. The selected clone Delta No. 21 is recommended for cultivation in the delta region of Egypt.(Author for correspondence.Tel: +20 2337 0588; Fax: +20 2337 1082; E-mail:helal_moussa@hotmail.com)

Key words: 14CO2 fixation, taro (Colocasia esculenta), translocation rate.

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