Efficacy of Plant Growth Regulators on Growth and Flowering of Cucumber (Cucumis sativus L.) cv. Malini under Shade Net Conditions

Abstract

An investigation was conducted to study the effect of different plant growth regulators on growth and flowering of cucumber cv. Malini under shade net conditions. The experiment was carried out with 10 treatments GA 3 at 75, 150 and 250 ppm, Ethrel at 100, 200 and 300 ppm, Salicylic acid at 75, 150 and 250 ppm and control (water spray) in three replications. Among all, GA 3 at 75 ppm recorded with maximum vine length (271.76 cm), number of number of leaves (90.32), number of nodes on main stem (30.22), length of primary branches (153.25 cm) and leaf area (458.14 cm²), whereas, maximum number of primary branches(18.49) was recorded in ethrel 300 ppm. Further, maximum internodal distance (8.24 cm) was recorded with GA 3 at 250 ppm. With respect to phenological parameters, ethrel at 300 ppm exhibited the best results for the minimum number of days taken for first female flower appearance (38.88 days), least node number of first female flower appearance (6.77) and lowest male to female sex ratio (1.40) as compared to other treatments, whereas treatment GA 3 at 150 ppm recorded minimum number of days taken to initiation of flowering (33.74 days), minimum days taken for 50 per cent flowering (44.91 days) and time taken for first harvesting (51.80 days) over other treatments and finally yield (165.17 t/ha) was recorded highest in GA 3 75 ppm compared to other treatments.

Effect of Gibberellic Acid (GA3) on Vegetative and Reproductive Growth and Yield Characters of Cucumber (Cucumis sativus) under Costal Region of West Bengal, India

“…The main reason for GA3's positive effect on these growth parameters was may be due to the cell division by mitosis and cell elongation influenced by GA3 treatment, which increased cell length and size and these effects collectively results the response of different growth parameters. Similar findings also reported by Dinest et al, [18] in cucumber, [19] in bottle gourd, [16] in squash and Chaurasiya et al [20] in musk melon.…”

Effect of Foliar Application of Plant Growth Regulators on Growth, Yield and Fruit Quality of Watermelon (Citrullus lanatus Thunb.)

“…The treated plants are more physiologically active in translocating food to develop fruits which results in early maturity of fruits to harvest. Similar results were recorded by Dinesh et al [8].…”

Study on Effect of Plant Growth Regulators (PGR) and Training System on Growth and Yield of Cucumber

“…An increase in fruit yield in treated plants may be attributed to the reason that plants remain physiologically more active to build up sufficient sources for the developing female flowers and fruits, ultimately leading to higher fruit yield in cucumbers. These results confirmed the finding of Imamsaheb and Hanchimani [10] in bitter gourd [11][12][13][14][15][16].…”