Effect of the Variation in Vernalization Temperature and Gibberellic Acid Concentration on Coriander Productivity

Elmetwally, Ibrahim; Eisa, El-Sayed

doi:10.21608/ejchem.2021.76531.3746

Effect of the Variation in Vernalization Temperature and Gibberellic Acid Concentration on Coriander Productivity

Document Type : Original Article

Authors

ibrahim elmetwally ¹
El-Sayed Eisa ²

¹ Botany Department and National Research Centre 33 El-Bohouth St., Dokki, P.O. Code 12622, Cairo, Egypt.

² Medicinal and Aromatic Research Department, Hort. Res. Inst., Agric. Res.Center, Giza, Egypt.

10.21608/ejchem.2021.76531.3746

Abstract

Compared to the other plants of family Apiaceae, production of coriander fruits requires longer periods. Thus, controlling of flowering duration and shorten the period is considered a crucial act to reduce the production period with save irrigation water. Therefore, an experiment was conducted during the two successive seasons (2018/2019 and 2019/2020) to investigate the effect of vernalization by four different temperatures (control without cold, 0° C, 3° C and 6° C) and three concentrations of gibberellic acid, GA3, (0, 50 and 100 ppm) on vegetative growth, number of days to 50% flowering and maturity, fruits production and volatile oil percentage of coriander fruits. The experimental design was a Split-plot design with three replications. Results showed that the vernalized seeds at 3° C caused high significant effect on all studied characteristics where it gave the highest average of plant height, number of branches and umbls /, fruits yield, volatile oil percentages and oil yield (ml / plant), and reduction number of days to 50% flowering and maturity compared with other treatments. The application of GA3 at 100 ppm gave the highest average in above-stated parameters compared to other GA3 treatments. Concerning the effect of interaction treatments, the obtained results cleared that all studied characteristics showed the highest average as a result of the combination between vernalized seed at 3° C and 100 ppm of gibberellic acid (GA3). Treatments under study gave a pronounced effect on essential constituents where linalool is the main constituent. In conclusion, to decrease the number of days from planting to complete maturity and increased dry herb weight/plant vernalized seeds at 3° C treated with GA3 at 100 ppm should be exploited in coriander production systems.

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