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STUDIES ON IBA AND NAA INDUCED RHIZOGENESIS IN PROPAGATION OF POMEGRANATE (Punica granatum L.) CULTIVARS UNDER OPEN CONDITIONS

KrishiKosh

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Title STUDIES ON IBA AND NAA INDUCED RHIZOGENESIS IN PROPAGATION OF POMEGRANATE (Punica granatum L.) CULTIVARS UNDER OPEN CONDITIONS
 
Creator PUSARLA SWATHI
 
Contributor Dr.K. UMA JYOTHI
 
Subject genetic variation ,biochemical, rhizogenesis ,IBA
 
Description The experiment was undertaken to elicit the genetic variation of cultivars with respect to rooting and shooting parameters and to observe the changes in biochemical constituents periodically during rhizogenesis in pomegranate when treated with IBA and NAA each at 2000 ppm and 4000 ppm concentrations. Two cultivars of pomegranate were evaluated in Factorial Randomised Block Design with three replications during August to December of 2012 at Horticultural College and Research Institute, Dr. Y. S. R. Horticultural University, Venkataramannagudem, West Godavari district, Andhra Pradesh.
The study revealed significant differences among cultivars for different parameters studied. Among the two cultivars studied, cv. Bhagwa performed superior in almost all parameters except average number of roots, number of leaves and leaf area which were highest in cv. Ganesh. This result showed that cv. Bahgwa was found to be elite for different characters studied during propagation.
Of all the concentrations of plant growth regulators used, IBA at a concentration of 4000 ppm recorded minimum number of days for sprouting, maximum rooting and shooting parameters viz., percentage of rooted cuttings, survival percentage of rooted cuttings, average number of roots, length of longest root, fresh and dry weights of roots, fresh and dry weights of shoots at 90 DAP;
average number of shoots per cutting, number of leaves per cutting, length of longest shoot at 30 DAP, 60 DAP and 90 DAP. The percentage of establishment of rooted cuttings in the main field was also recorded maximum with the same treatment. The performance of the cuttings treated with NAA 2000 ppm was inferior.
The treatment combinations exhibited a significant difference with respect to the observations studied. The cuttings of Bhagwa treated with 4000 ppm IBA recorded significantly superior results in rooting and shooting parameters than any other interactions. The least performance was observed to be found in the cuttings of cv. Ganesh treated with NAA 2000 ppm for most of the rooting and shooting parameters, whereas, mean number of roots, fresh weight of roots, number of leaves and leaf area were found to be minimum in Bhagwa cuttings treated with NAA 2000 ppm.
The nutritional status of cuttings and biochemical changes taken place during rooting process were significantly effected by treatments imposed on cuttings. The biochemical constituents viz., starch, total sugars, carbohydrates and proteins increased upto 30 DAP which declined afterwards upto 90 DAP indicating their utilization in formation of root primordia and development of roots. The phenols showed a positive relationship with rooting which increased throughout the rooting period.
It was found that IBA was more effective than NAA. Bhagwa cuttings treated with IBA 4000 ppm gave pronounced effect on root formation indicating its eliteness for propagation in pomegranate under open conditions.
 
Date 2016-07-25T12:38:49Z
2016-07-25T12:38:49Z
2013-09
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69754
 
Language en
 
Format application/pdf
 
Publisher Dr. Y. S. R. HORTICULTURAL UNIVERSITY