Journal: Journal of Biopharmaceutics Sciences (JBS)
Author: Keshar Bahadur Shahi, K.K Mishra, Abhishek Tiwari, Aneeta Yadav, Arun Shukla

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/jbs.01.2022.01.05

An experiment was carried out to assess the effectiveness of different concentration of gibberellin on plant growth, flowering and yield of African marigold (Tageteserecta L.) at the field of Rama University during August 2020 to November 2020. The experiment consisted of five treatments (T1 control, T2-100 ppm GA3, T3-200 ppm GA3, T4-300 ppm GA3 and T5 400 ppm) replicated four times and was laid out in randomized complete block design (RCBD). About one month old marigold seedlings were planted on August15thandfoliar applications were at 30 and 45 days after transplanting. Foliar application of 300 ppm GA3 showed significant difference in 60 and 75 DAT in plant height (117.6 cm and 109.25 cm) and in plant spreading ( 93.04 cm and 94.31 cm followed byGA3 400 ppm compared to control (91.10 cm and 96.4 cm, 79.14 cm and 79.14 cm respectively). Higher number of branches (17.20)per plant was recorded in GA3 300 ppm compared to 400 ppm (17.20), 200 ppm (15.45), 100 ppm (12.20) and control (10.5). The GA3 300 ppm treatment was also found effective in earliness of first flower initiation and 50% flowering (50.25 and 81.50 DAT) with higher flower diameter (4.720 cm)as compare to control treatment (41 DAT, 67.50 DAT and 3.835 cm respectively).The length of flower stalk, fresh weight, dry weight along with higher yield per plant and yield per hectare was recorded in GA3300 ppm followed by GA3 400 ppm (4.122 cm, 4.228 g, 0.7240 g, 358.2 g, 14.99 ton/ha and 4.115 cm, 3.937 g, 0.6990g, 344.5 g, 13.05 ton/ha respectively) as compared to control (3.570 cm, 3.235 g, 0.5142 g, 205.3 g and 7.35 t/ha respectively). However the application of 300 ppm GA3was most effective as compared to other concentrations of GA3.

Pages 01-05
Year 2022
Issue 1
Volume 2