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STUDIES ON THE EFFECT OF CYTOKININS AND SILVER NITRATE ON SUCCESS OF GRAFT UNION IN THOMPSON SEEDLESS GRAPE (Vitis vinifera L.)

KrishiKosh

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Title STUDIES ON THE EFFECT OF CYTOKININS AND SILVER NITRATE ON SUCCESS OF GRAFT UNION IN THOMPSON SEEDLESS GRAPE (Vitis vinifera L.)
 
Creator CH. SUNITHA
 
Contributor Dr. D. Manohar Prasad
 
Subject growth parameters ,polyhouse condition ,mean root length,antisenescence effect
 
Description Investigation was carried out at Grape Research Station, Dr.Y.S.R Horticultural University, Rajendranagar, Hyderabad during October 2011 – December 2011 to find out the “The effect of cytokinins and silver nitrate on success of graft union in Thompson Seedless grape (Vitis vinifera L.)”.
A set of two experiments were conducted in Completely Randomized Design one in open conditions and another in polyhouse conditions with same treatments for cuttings grafted on Dogridge and Salt Creek. The treatments included three different concentrations of BAP (150 ppm, 250 ppm and 350 ppm), kinetin (150 ppm, 250 ppm and 350 ppm), silver nitrate (50 ppm, 100 ppm and 150 ppm) and control, IBA 2000 ppm was commonly treated for all the basal end of the rootstock cuttings. The treated cuttings were grafted and analyzed for various growth parameters viz., number of days required for bud sprouting of scion, percentage survival of grafts at 30, 40, 50 and 60 days interval, scion length after 30, 40, 50 and 60 days (cm), number of leaves after 30, 40, 50 and 60 days(cm), number of roots after 60 days, mean root length after 60 days (cm), maximum root length after 60 days (cm), fresh weight of roots after 60 days (gm/graft), dry weight of roots after 60 days (gm/graft), fresh weight of shoot after 60 days (gm/graft), dry weight of shoot after 60 days (gm/graft), scion/stock ratio, callus degree and rooting degree.
All the growth parameters of grafts grown under polyhouse condition were better when compared to open condition while rooting parameters like number of roots, mean root length, maximum root length, fresh weight of roots after 60 days, dry weight of roots after 60 days and rooting degree were higher in grafts kept under open conditions.
Cuttings of Thompson seedless grafted on Dogridge rootstock recorded better results when compared to Salt Creek rootstock in both the growing conditions.
Among the various treatments cuttings treated with kinetin 250 ppm followed by BAP 250 ppm recorded beneficial effect on the early union of grafts and subsequent improvement in growth parameters. Though AgNO3 has antisenescence effect which can help in delaying abscission by inhibiting ethylene synthesis it had little effect on graft success when compared to kinetin and BAP on both the rootstocks.
 
Date 2016-07-23T10:04:50Z
2016-07-23T10:04:50Z
2012-06
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69472
 
Language en
 
Format application/pdf
 
Publisher Dr.Y.S.R HORTICULTURAL UNIVERSITY