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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(5): 1307-1336
DOI: https://doi.org/10.20546/ijcmas.2018.705.159


A Recent Advances in Use of Plant Growth Regulators (PGRs) in Fruit Crops - A Review
Tejpal Singh Bisht1, Laxmi Rawat1, Binayak Chakraborty2 and Vikas Yadav3*
1College of Forestry, Ranichauri, VCSG Uttarakhand University of Horticulture and Forestry, Bharsar-249 199 (Pauri), Uttarakhand, India
2College of Agriculture, Navasri Agricultural University, Waghai- 394 730 (The Dangs), Gujarat, India
3Central Horticultural Experimental Station (ICAR), Vejjalpur (Godhra), Gujarat, India
*Corresponding author
Abstract:

Plant growth regulators or phytohormones are organic substances produced naturally in higher plants, controlling growth or other physiological functions at a site remote from its place of production and active in minute amounts. The discovery of plant hormones and their ability to regulate all aspects of plant growth and development were defining moments in horticulture. Plant Growth Regulators (PGRs) were soon identified that could improve yield, quality and postharvest life. Nowhere has their impact been more vividly chronicled than in tree fruit production. Tree fruit are considered high value crops and even small modifications in production efficiency, product quality or enhanced cosmetic appeal have the potential to significantly increase product value. Following the discovery of auxins, NAA was found to both to useful in counteract two of the most serious problems of apple production, biennial bearing and preharvest drop. NAA continues to be an important PBR. The discovery of gibberellins and cytokinins led to commercial uses of products in these hormone categories that include improved shape of fruit, enhanced market value by reducing blemishes, optimise tree architecture that may be accomplished the by overcoming apical dominance. PBRs were later discovered that could either advance ripening or extend postharvest life, thus greatly expanding the effective period when high quality fruit could be harvested and marketed. Other areas of fruit production where PBRs are especially useful include prevention of preharvest fruit drop, control of vegetative growth, enhanced flower bud formation and control of fruit ripening. Some other PBRs like Prohaxadione calcium, an inhibitor of gibberellin biosynthesis, not only retarded shoot growth but it can also alter plant metabolism to impart resistance to insects and diseases. The naturally occurring hormone abscisic acid is showing potential for overcoming plant stress and also enhancing early fruit drop. Recently 1-MCP, a competitive inhibitor of ethylene, has revolutionized storage of pome fruit by extending the postharvest life and improving storage quality of fruit. Today’s great progress in PBR use has come in areas of fruit thinning and retardation of preharvest drop. In these areas greater understanding of fundamental processes, the use of molecular biology techniques and continued empirical research has lead to more effective control of these important process in tree fruit production.


Keywords: Plant Growth Regulators (PGRs), Fruit crops
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How to cite this article:

Tejpal Singh Bisht, Laxmi Rawat, Binayak Chakraborty and Vikas Yadav. 2018. A Recent Advances in Use of Plant Growth Regulators (PGRs) in Fruit Crops - A Review.Int.J.Curr.Microbiol.App.Sci. 7(5): 1307-1336. doi: https://doi.org/10.20546/ijcmas.2018.705.159