Effect of Cold Stratitication and Gibberellic Acid Treatment on Seed Germination and Seedlings Growth of Quince (Cydonia oblonga)
DOI:
https://doi.org/10.54172/7f71bw13Keywords:
Quince, Stratification, dormancy, GA3Abstract
The study aimed to determine the effect of cold stratification, concentrations of gibberellic acid (GA3) and the interaction between them on the characteristics of germination and growth of quince seedlings. Quince seeds have embryonic dormancy attributed to inhibitory germination in seed covers; thus, seeds exposed to cold stratification (30, 60, and 90 days) and treated with GA3 at concentrations (0, 250, 500, and 1000 ppm). A randomized complete block design was used, and each treatment contained 40 seeds. The results showed the cold stratification of 90 days gave the highest percentage and speed of germination, the longest seedling, the largest leaf area and a percentage of dry matter with an average of (87%, 1.88, 37.35cm, 31cm2 and 55%), and the use of a concentration (500 ppm) gave the best percentage and speed for seed germination. The interaction showed a significant effect on the characteristics of germination and growth. The seed treated with cold stratification for 60 days with a concentration of GA3 at 500 ppm gave the highest percentage of germination (94%), and the stratification for 90 days with a concentration of 1000 ppm recorded the largest leaf area and the highest percentage of dry matter (34. 40 cm2 and 57.54%) on respectively. While the seeds stratified for 60 days without GA3 have the highest value for the diameter (2.89 mm). From this, we concluded that the treatment with GA3 with cold stratification is of economic importance for its effective role in breaking the dormancy of Quince seeds.
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