Effect of brassinosteroids and 1-naphthalene acetic acid on fruit quality of 'Pattawia' pineapple [Ananas comosus (L.) Merr.]
A study was conducted on 'Pattawia' pineapple [Ananas comosus (L.) Merr.] grown in 17-inch black plastic pots, at the Department of Horticulture, Faculty of Agriculture, Kasetsart University, Thailand during December 2013 to June 2014. The objective of the study was to determine the effect of brassinosteroids (BRs) and 1-naphthalene acetic acid (NAA) on pineapple fruit quality. The experiment was a completely randomized design (CRD) with 4 treatments: 1) 2 mg L-1 BRs; 2) 200 mg L-1 NAA; 3) 2 mg L-1 BRs + 200 mg L-1 NAA; and 4) control as water spray in 4 replications. Pineapple plants were sprayed with treatments at days 30, 60 and 90 after flowering. The results showed that the combination of 2 mg L-1 BRs + 200 mg L-1 NAA applied to pineapple plants gave the highest crown weight (376.80 g), fruit weight (1.22 kg), fruit diameter (10.82 cm), fruit length (13 cm), peel thickness (5.55 mm), TSS (12.93 °Brix) and TSS/TA (13.62), respectively. Moreover, the maximum crown width (33.41 cm), stalk length (35.50 cm) and fruit firmness (33.12 N), respectively, were obtained with 200 mg L-1 NAA. Whereas, the crown length, stalk width, core size, pH and %TA were not different. This result suggested that the application of 2 mg L-1 BRs + 200 mg L-1 NAA can be useful to improve the quality of 'Pattawia' pineapple fruit.
Chumpookam, J., Aumkhruea, T. and Teankum, S. 2017. Effect of brassinosteroids and 1-naphthalene acetic acid on fruit quality of 'Pattawia' pineapple [Ananas comosus (L.) Merr.]. Acta Hort. (ISHS) 1166:125-130
Smooth Cayenne, BRs, NAA, fruit size