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STUDIES ON IMPROVEMENT OF SEED GERMINATION AND SEASON OF WEDGE GRAFTING IN GUAVA (Psidium guajava L.)

KrishiKosh

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Title STUDIES ON IMPROVEMENT OF SEED GERMINATION AND SEASON OF WEDGE GRAFTING IN GUAVA (Psidium guajava L.)
 
Creator D. MUNTHAJ
 
Contributor Dr. C. MADHUMATHI
 
Subject presowing,germination,grafting
 
Description An experiment was conducted to evaluate the effect of different presowing seed treatments on germination and to find out the best season for performing wedge grafting in guava at Horticulture College and Research Institute, Anantharajupet during the year 2013-2014. The investigation was organised into two experiments, first one on different seed treatments versus germination as well as seedling growth and the second one on different months (July to January) of performing wedge grafting versus success of it in guava. The first experiment was conducted on guava cv. Lucknow 49 since it is popular as promising rootstock whereas, the second experiment was conducted on the scions of guava cv. Allahabad Safeda since it is a commercial cultivar. Among the different seed treatments, soaking in GA3 3000 ppm for 24 hours resulted in significantly higher (74.00%) seed germination, co-efficient of germination velocity (3.10), shoot length (21.47 cm), seedling girth (0.93 cm), vigour index (2715.43), maximum number of leaves per seedling (19.22), leaf area (18.32 cm2), fresh weight (6.62 g) and dry weight (3.15 g) of seedlings. Whereas the minimum days (10.33 days) for initiation of germination was observed by soaking in GA3 2000 ppm solution for 24 hours. All concentrations of GA3 recorded better seedling growth significantly superior to other treatments. Season of grafting was found to exert significant influence on success of wedge grafting in guava. Maximum per cent of graft take (74.00%) was recorded by the grafts prepared during the month of July followed by September (66.45%). Minimum days taken for scion sprouting ( 6.33 days) was recorded in the month of July followed by August and September (7.33 days). Maximum sprout length (4.04 cm), number of leaves per graft (15.33), leaf area (23.86 cm2) and graft diameter (5.10 mm) was recorded in the month of July at 60 days after
grafting. Though the maximum number of sprouts per graft (2.73) and graft height (13.82 cm) was observed in grafts prepared during the month of September at 60 days after grafting September grafted material was relatively poorer in graft take (66.45%) as compared to July grafted material in guava cv. Allahabad Safeda under Anantarajupeta conditions.
 
Date 2016-07-23T13:37:44Z
2016-07-23T13:37:44Z
2014-09
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69579
 
Language en
 
Format application/pdf
 
Publisher Dr. Y.S.R. HORTICULTURAL UNIVERSITY