Effect of Plant Growth Regulators on Germination of Seed of Podophyllum hexandrum in high altitude region of Ladakh, India (original) (raw)
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Asian Journal of Basic Science & Research, 2023
This research paper delves into the influence of plant growth regulators (PGRs) on the germination percentage of four distinct plant species, specifically Albizia lebbeck (L.) Benth., Holoptelea integrifolia (Roxb.) Planch., Acacia catechu (L.f.) Willd., and Terminalia bellirica (Gaertn.) Roxb. The study was conducted at Arid Forest Research Institute, Jodhpur, during the summer of 2022. The study employed three PGRs: gibberellic acid (GA3), indole acetic acid (IAA), and indole-3-butyric acid (IBA) at two concentrations of 500 ppm and 1000 ppm. The primary objectives of this study were to evaluate the germination percentage of the four plant species and to ascertain the optimal PGR treatment for seed germination. The results of this research could potentially aid in the development of effective strategies to enhance seed germination and overall plant growth. The study revealed that the impact of PGRs on germination percentage was dependent on the plant species and the concentration of the PGR used. The findings indicated that the use of PGRs at appropriate concentrations could increase the germination percentage of seeds. Of the three PGRs used in the study, GA3 was found to be the most effective at enhancing seed germination for all four plant species, followed by IAA and IBA. Overall, this research has demonstrated that the use of PGRs can significantly improve seed germination percentage and can provide valuable insights into the optimal concentration of PGRs required for the best possible results. The study results could potentially assist in the development of PGR-based strategies to enhance plant growth and productivity, which could have important implications for agricultural and environmental sustainability.
International Journal of Chemical Studies, 2021
A one year research was conducted during 2019-2020 as a part of fulfillment of post graduate degree on "Effect of plant growth regulators and chemicals on seed germination and seedling growth of swollen root (Decalepis hamiltonii Wight & Arn.)" at Dr. Y.S.R Horticultural University, Venkataramannagudem, West Godavari District of Andhra Pradesh. Among the treatments studied, pre sowing seed soaking with H2O2 @ 0.3% for 8 h recorded maximum values for germination percentage (30.50), survival percentage (99.60), seedling growth parameters viz., fresh weight of seedling (0.661g, 3.35 g), dry weight of seedling (0.181 g, 0.920 g), chlorophyll content (45.99 SPAD, 32.87 SPAD), vigour index I (192.15 cm, 234.85 cm), vigour index II (20.11 g, 102.53 g), root length (6.20 cm, 6.90 cm), fresh weight of root (0.256 g, 2.15 g) and dry weight of root (0.161 g, 0.461 g) at 25 and 50 days after germination respectively. Significantly highest seedling height (7.97 cm, 9.10 cm), number of leaves (7.60, 9.30) and absolute growth rate (0.320 cm, 0.360 cm) at 25 and 50 days after germination respectively was recorded with seed soaking in GA3 @ 1000 ppm for 24 h.
2013
Allium stracheyi Baker (Alliaceae, 2600–3000 m asl), an endangered species of Central Himalaya, India, has low seed germination in its natural habitat. This study is an attempt to improve seed germination by determining the seed viability with a low mean germination time (MGT) and germination index (GI) under optimum temperature, light, and pre-soaking treatments. The seeds were pre-soaked in hot water (80°C), cold water (10°C), and gibberellic acid (GA3 at 50 and 100 mg/l) for 24 h and subjected to light (12 h light and 12 h dark) and continuous dark (24 h) conditions with different temperature regimes (10, 15, 20, 25, and 30°C). The viability varied between 66.0% and 69.67% and declined rapidly after 12 months of storage. Our studies suggest that the 100 mg/l GA3 treatment was beneficial for seed germination and seedling growth. Pre-soaking in a 100 mg/l GA3 solution and incubation at 20°C under light conditions enhanced the germination significantly (p < 0.05) and resulted in the highest (97.3%) germination with the lowest MGT = 5.7 days, with GI = 8.11. The recommendations of this study support the conservation of alpine A. stracheyi via simple and cost-effective techniques for optimal seed germination.
Frontiers in Crop Improvement, 2021
An utmost attempt to augment the germinability of Ginger lily seeds using gradual sensible doses of certain plant growth hormones was made at College of Horticulture, Veer Chandra Singh Garhwali Uttarakhand University of Horticulture and Forestry, Bharsar (30° 05' N latitude and 78° 99' E longitude) during 2020. The experiment entails of two parts viz., laboratory experiment and polyhouse condition experiment comprising of gradual concentrations of GA3, IAA and NAA and an untreated check treatment tallying a total of 10 treatments. Various germination parameters were studied critically and results witnessed superiority of the treatment GA3 @ 750 ppm over rest of the treatments in all the traits under study and analyzed statistically significant observations. The treatment incidentally resulted in minimum time taken for first germination appearance under both laboratory (12.00 days) and polyhouse (26.33 days) condition. The laboratory condition ensured lesser time consumption on germination. Maximum germination was also noticed in GA3 @ 750 ppm under both laboratory (93.30 %) and polyhouse (47.92 %) condition, indicating preferability of laboratory condition over polyhouse condition for germination. Also, the highest germination energy per cent [22.67 % (lab.) and 16.67 % (polyhouse)], maximum mean daily germination (MDG) [0.77 % seeds /day (lab.) and 0.11 % seeds /day (polyhouse)], fastest speed of germination [1.000 seeds/day (lab.) and polyhouse (0.20 seeds/day)]. germinator maintaining a constant temperature of 25 ± 2° C and 75-80 % relative humidity. Seed germination in lab condition using seed germinator creating consistent favorable conditions by regulating temperature, humidity and light appeared to have resulted in better germination potential of seeds over the seeds germinated in polyhouse condition (naturally ventilated even type). The poorer seed germination in polyhouse condition could possibly be due the fluctuation in the environmental conditions which directly influences imbibition and other important biochemical processes responsible for seed germination. Thus, the seed germination Hedyhcium spicatum could effectively be improved judiciously by simply using seed germinator and growth hormones like GA3 @ 750 ppm.