EFFECT OF SEED PRIMING ON GERMINATION OF OKRA (Abelmoschus esculentus var. Arka Anamika)

Abstract

Seed priming is an effective, eco-friendly method to promote seed germination and seedling vigor of okra to overcome the reduced and delayed germination in fresh or stored okra seeds caused by seed hardness. An experiment was carried to evaluate the effects of different priming on okra seeds germination and seedling vigor using Arka Anamika variety at Horticulture lab of Agriculture and Forestry University, Rampur, Chitwan, Nepal. Investigation was carried out with 6 treatments (T1: seed priming with tap water, T2: seed priming with 200ppm NAA solution, T3: seed priming with 10% PEG-200 solution, T4: seed priming with 200ppm GA3 solution, T5: seed priming with 5% Trichoderma solution and T6 no priming) with 4 replications in Complete Randomized Design (CRD). Seeds primed with T1 to T5 were soaked for 24 hours and shade dried for 6 hours before sowing. Priming with T4 was found to be best in terms of maximum seed germination (60.12%), seed vigor index (5772.68 cm), mean germination rate (7.53 seeds per day). The highest shoot length (81.40 mm) was observed at T1 whereas enhancement of root length occurred with the priming with T3. All treatments had a significant positive effect on all the germination parameters in comparison to control. The study concluded that GA3 priming enhanced germination as well as seed vigor in okra and hydro priming and tricho-priming can be used as an alternative to GA3 priming among farmers in Nepal.

Effect of Seed Priming Methods on Seed Quality of Okra (Abelmoschus esculentus (L.) Moench) Genotypes

“…Te enhanced germination observed in seed priming treatments might be due to the fact that the seeds were completing the pregermination process during seed priming, and GA 3 might afect the synthesis of hydrolyzing enzymes, particularly amylase and protease and the hydrolyzed food was utilized by the growing embryo and thereby enhancing the germination of seeds [31,32]. Consistent with others, the present results also showed a signifcant increase in germination percentage with different priming treatments [33]. Seeds primed with cow urine had a 15.6% higher germination percentage than untreated seeds of cotton [34].…”

Germinación y crecimiento de semillas de arveja var. ‘Santa Isabel’ sometidas a diferentes dosis de giberelinas

“…Lo anterior concuerda con Lamichhane et al (2021), quienes encontraron que aplicaciones de 200 mg L -1 de GA 3 , en semillas de Abelmoshus sculentum, alcanzaron el mayor PG [60,12 %], IV y VMG, lo que demuestra tres fases antes de la emergencia de las plántulas: de imbibición, de latencia y de crecimiento radicular. Es bien sabido que una germinación más temprana y mejor sincronizada está asociada con un aumento de las actividades metabólicas en las semillas embebidas (Singh et al, 2017); en ese sentido, GA 3 afecta de forma positiva la germinación, la elongación del tallo y el crecimiento al sintetizarse en órganos de crecimiento activo, como semillas [endospermo en desarrollo], hojas jóvenes y raíces (Bagale et al, 2022).…”

Evaluating the Impact of Various Seed Priming Agents (SPAs) on Germination and Development Parameters of Okra (Abelmoschus esculentus L. Moench)

“…Priming is a technique used in okra farming to enhance seed germination (Wahocho et al, 2023). Seed priming is an easy, affordable, and effective method for timing germination and encouraging early seedling growth (Lamichhane et al, 2021). This method achieves its objectives by enhancing seed vigor, breaking dormancy, accelerating germination, and promoting better overall plant establishment (Finch-Savage and Leubner-Metzger, 2006).…”