Effect of flowering regulating chemicals and girdling on winter flushing, yield and fruit quality in Litchi cv. China
Keywords:
Bio-regulators Litchi, fruit drop, quality, girdling, KNO3, prohexadione-Ca, salicylic acid,Abstract
A study was conducted on effect of various bio-regulators and girdling on winter flushing, flowering intensity, fruit yield and quality of litchi cv. China. The experimental results revealed that winter flushing was inhibited by girdling (removal of bark at 3mm width in 75 % branches] and application of paclobutrazol (PBZ). The number of floral panicles per tree was highest due to spray of KNO3 and prohexadione-Ca (207.50 and 206.17 respectively), while least in control trees (109.16). The fruit retention, average fruit weight was insignificant amongst the treatments. Spray of KNO3 during September end, led to highest yield in terms of number of fruits per tree (2,427) and in weight (55.42 kg per tree). The control trees had only 35 fruit per tree (i.e., 0.80 kg per tree). KNO3 also led to highest pulp percent (65.35 %) of the fruits. Spray of salicylic acid caused highest fruit ascorbic acid (29.26mg/100g pulp) and highest total sugar (22.4 %) of the fruit. Besides lowest yield, the least pulp content (50.61 %), total anthocyanin content (6.15 mg per 100 g pulp), total sugar (11.80 %) and reducing sugar (9.03 %) were observed in control trees. The highest TSS (22.60° Brix) and TSS/acidity ratio (66.97) of the fruits were recorded in paclobutrazol applied trees while least titratable acidity was found after spray of prohexadione-calcium. Thus, spray of KNO3 (2.0 %) was able to record highest yield and pulp content in litchi cv. China while salicylic acid @ 2000 ppm application was found very effective for improving fruit quality attributing characters. Girdling and spray of prohexadione- Ca in litchi tree can also be an effective intervention for yield enhancementReferences
Ball, J.A. 1997. Evaluation of two lipid based edible coating for their ability to preserve post-harvest quality of green bell peppers. Master Diss., Faculty of the Virginia Polytechnic Institute and State University. Blacksburg, Virginia, USA
Beevers, L. and Hageman, R. H. 1969. Nitrate reduction in higher plants. Annu. Rev. Pl. Physiol. 20:492-522
Evans, J. R., Evans, R. R., Regusci, C. L. and Rademacher, W. 1999. Mode of action, metabolism, and uptake of BAS 125W, prohexadione-calcium. HortScience, 34: 1200-1201
Garad, B. V., Jogdand, S. M., More V and Kul Karni, S.S. 2013. Effect of chemicals on flowering and fruiting in mango (Mangifera indica L.) cv. Keshar. Ecol. Environ. Conservation. 19(3): 835-838
Hung, N.Q. and Nghi, D.Q. 2006. Effect of paclobutrazol on growth, flowering, fruit setting and yield of Binhkhe early litchi variety. Informatic Centre for Agriculture and Rural Development: http://www.agroviet.gov.vn/en/Pages/de fault.aspx
Jayaraman, J. 1981. Laboratory Manual in Biochemistry, John Wiley& Sons, New Delhi, India
Marschner H. 2003. Mineral nutrition of higher plant. 2nd ed. Amsterdam: Academic Press. pp 201228, 405435
Mishra, S., Choudhary, M.R., Yadav, B. L. and Singh, S.P. 2011. Studies on the response of integrated nutrient management on growth and yield of ber. Indian J. Hort. 68(3):318-321
Pieterse, A.H. & Muller, L.J. 1977. Induction of flowering in Lemna gibba G3 under short day conditions. Plant Cell Physiol., 18: 45-53
Ramburn, N. 2001. Effects of girdling and growth retardants on flowering and fruiting of litchi in mauritius. Acta Hort. 558, 229-232
Ranganna, S. 1986. Handbook of Analysis and Quality Control for Fruit and Vegetable Products. 2nd Edition. Tata McGraw-Hill Publishing Company Ltd., New Delhi, India. 1112 p
Saxena, S., Hajare, S. N., More,V., Kumar, S., Wadhawan, S. and Parte M.N.P . 2011. Antioxidant and radio protective properties of commercially grown litchi (Litchi chinensis) from India. Food Chem. 126: 39-45
Shao, L.H., Deng, L. and Qing, L.Y. 1998. Effects of floral promotion or inhibition treatments on flowering of citrus trees and protein fraction in buds. J. Trop. Subtrop. Bot. 6: 124–130
Kaur-Sawhney, R., Tiburcio, A. F. & Galston, A. W. 1988. Spermidine and flower-bud differentiation in thinlayer explants of tobacco. Planta, 173: 282–284
Vijaylakshmi, D. and Srinivasan, P.S. 2000. Improving the quality attributes of ‘off’ year ‘Alphonso’ mango through chemical and growth regulators. Orissa J. Hort. 28:27-31.
Yeshitela T.P.J., Robbertse and P. J.C Stassen, 2004. Paclobutrazol suppressed vegetative growth and improved yield as well as fruit quality of ‘Tommy Atkins’ mango (Mangifera indica) in Ethiopia. New Zealand J. Crop Hort. Sci. 32(3): 281-293.
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