Effect Of Ethephon Doses On Vegetative Characters, Sex Expression and Yield Of Cucumber (Cucumis sativus cv. Bhaktapur Local) In Resunga Municipality, Gulmi, Nepal

Abstract

A study on the effect of ethephon doses on vegetative characters, sex expression and yield of cucumber (Cucumis sativus cv. Bhaktapur Local) was conducted in Gulmi, Nepal during 21st April to 24th August 2017. The experiment was laid in single factor Randomized complete Block Design (RCBD) with 4 replication and 5 treatments. Four different doses of ethephon 100, 200, 300 & 400 ppm with control were applied. Two sprays of ethephon was made one at two true leaf stage and other at four true leaf stage. Ethephon was found to reduce the plant height compared to control, minimum (238.8 cm) with 400 ppm and maximum (310.4 cm) with the control. The number of nodes and branches per plant were found to be highest with 300 ppm. Ethephon was found to shift first male flowers and female flowers towards upper and lower nodes respectively. The plot treated with 300 ppm ethephon, bearing 20.31 female flowers per plant was found superior to other doses for increasing total female flowers. Maximum and minimum number of male flowers per plant was recorded with control(107 per plant) and 400 ppm (46.90 per plant) respectively. Similarly, 300 ppm of ethephon was found superior for reducing (male: female) sex ratio. Maximum yield 27.51 t/ha was recorded with 300 ppm and minimum yield of 17.48 t/ha with the control. 57% increment in the yield was observed with 300 ppm ethephon as compared to the control. Thus, proper use of ethephon is found to be beneficial to farmers.
 Int. J. Appl. Sci. Biotechnol. Vol 7(3): 370-377

Effect of foliar spray of ethephon doses and pruning intensities on growth, sex expression, and yield of cucumber (var- Bhaktapur local) in Kaski, Nepal

“…With the increase in ethephon doses the fruit length decreases. (Dhakal et al, 2019) also reported similar findings in the case of cucumber fruit length with ethephon different concentrations. However, (Carine Cocco, 2021) reported that different doses of ethephon application and fruit length didn't vary statistically in plums which contradicts our findings with them.…”

“…While fruit circumference of cucumber was found highest with 3G (22.80 cm) which is as par with ethephon @125 ppm (20.92 cm) while all other treatments were as par with each other and the lowest cucumber fruit circumference was obtained with ethephon @500 ppm (18.90 cm). Increasing the dose of ethephon from 125 ppm to 500 ppm circumference of the fruit decreases significantly which contradicts with findings of (Dhakal et al, 2019). (Carine Cocco, 2021) reported fruit circumference has not varied statistically among treatments, with exception of ethephon @100ppm.…”

Varietal screening of Cucumber in Sundarharaicha Municipality, Morang, Nepal

“…The highest fruit weight were recorded in CUCUVAR-6 (177.60 gm) and the lowest fruit weight was recorded with AK-47 (139.20 gm) (Arunachalam, 2020). Fruit length, diameter and weight have been also differ by the use of chemicals like ethephon (Dhakal et al, 2019). There was a highly significant difference among the varieties on fruit length, fruit diameter and fruit weight.…”

Exploring Ethylene-Related Genes inCannabis sativa: Implications for Sexual Plasticity

“…Ethylene was first reported as a plant growth regulator in 1901 and has since been extensively studied (Coulter & Barnes, 1901;Gane, 1934;Kende, 1998;Chang, 2016). It is involved in various biological processes in plants, including seed germination, root development, shoot and root growth, flowering, fruit ripening, leaf and fruit abscission, and responses to abiotic and biotic stresses and senescence (Tieman et al, 2000;Resnick et al, 2006;Argueso et al, 2007;Yang et al, 2015;Dhakal et al, 2019;Binder, 2020). The biosynthesis pathways of ethylene are highly conserved across the plant kingdom, and considerable time and resources have been dedicated to its study (Yang et al, 2015).…”