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Effect of Scion Maturity and Time of Cleft Grafting on the Success, Survivability and Growth in Burmese Grape (baccaurea Ramiflora Lour)

N. Parvin
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202. Bangladesh

M.S.H. Choudhury
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202. Bangladesh

M.A. Rahim
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202. Bangladesh

Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202. Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the "Germplasm Centre" (GPC) of the Fruit Tree Improvement Program (FTIP), Bangladesh Agricultural University, Mymensingh during the period from April to November, 2012 to investigate the effect of scion maturity and time of cleft grafting on the success, survivability and growth in Burmese grape. The experiment consisted of two factors such as (i) three types of scion maturity viz., terminal, mid and basal portions of shoot used as scion and (ii) ten times of grafting operation viz., 10 and 25 day of each of April, May, June, July and August respectively. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Significant variations were observed in all parameters studied. In case of scion maturity, the minimum success (87.01%) and survivability (84.71%) were found in case of basal portion used as scion but the maximum success (88.59%) and survivability (85.90%) were found in case of terminal portion used as scion. In respect of time of grafting operation, the highest success (91.38%) and survivability (88.42%) were found when grafting operation was done on 10 May but the lowest success (85.01%) and survivability (82.70%) were recorded when grafting operation was done on 25 August. The combined effect had also significant influence on most of the parameters studied. The highest success (92.15%) and survivability (89.48%) were found in case of terminal portion used as scion when the grafting operation was done on 10 May, 2012 but the lowest success (84.47%) and survivability (81.75%) were found in case of basal portion used as scion when the grafting operation was done on 25 August, 2012. From the present investigation it may be suggested that, terminal portion used as scion and grafting on 10 May can be practised with the highest success and survivability in cleft grafting of Burmese grape.

Keywords: Scion maturity, Grafting time, Cleft grafting, Success, Survivability

Location: ‘BAU Germplasm Centre’ (GPC) of Fruit Tree Improvement Program (FTIP), Department of Horticulture, Bangladesh Agricultural University, Mymensingh

Start Date: 00-04-2012

End Date: 00-11-2012

Program Area: Variety and Species

Commodity: Grape

Objectives:

1. To observe the effect of scion maturity and time of cleft grafting on the success, survivability and subsequent growth of grafts in lotkan.

Methodology:

The present experiment was conducted at the ‘BAU Germplasm Centre’ (GPC) of Fruit Tree Improvement Program (FTIP), Department of Horticulture, Bangladesh Agricultural University, Mymensingh during the period from April to November, 2012. The experiment consisted of two factors with 30 treatment combinations which were as follows: Factor A: Scion maturity viz., S₁ = Terminal/apical portion used as scion (10 cm); S₂ = Mid portion ie. just below apical used as scion (10 cm); S₃ = Basal portion ie. just below mid used as scion (10 cm) Factor B: Time of grafting viz T₁ =10 April, 2012; T₂ = 25 April, 2012; T₃ = 10 May, 2012; T₄ = 25 May, 2012; T₅ = 10 June, T₆ = 25 June, 2012; T₇ = 10 July, 2012; T₈= 25 July, 2012; T₉ = 10 August, 2012; T₁₀ = 25 August, 2012. The two-factor experiment consisting of 30 treatment combinations was laid out in Randomized Complete Block Design (RCBD) with three replications. For each treatment combination grafting operations were performed on twenty rootstocks of each plot of a block. Thus in total grafts 3×10×3×20= 1800 were made. The treatment combinations were randomly assigned to each unit plot, so as to allot one treatment combination only in each block. A number of seedlings of healthy, vigorous, straight, strong, pest and disease free having uniform in size and nearly 3 to 4 months old rootstocks of lotkon raised in the polybags were selected and brought to the experimental site at each time of grafting operations. The non-flowering (about 3-4 months old containing sufficient reserved food materials) shoots of fresh growth having dark green colored leaves, about 30 cm long, straight, smooth, healthy, pest and disease free with swollen terminal bud in bulging condition and also of same thickness of rootstock were selected as scion. The cleft grafting operations were performed and data on different parameters were recorded at one month interval except the times required to first bud breaking, first leaf opening, percentage of graft success and percentage of graft survivability. Data regarding days required for bud breaking, leaf opening, length of rootstock, length of scion, graft height, diameter of rootstock, diameter of scion, number of leaves per graft, number of branches per graft, length of the largest leaf, breadth of the largest leaf, percentage of graft success and survivability were recorded periodically and analyzed. Grafts are kept in poly tunnel condition for 90 days. All necessary Intercultural operations and after cares are performed as per required.

Source of Information: J. Agrofor. Environ. 7 (2): 93-97, 2013; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In case of scion maturity, the minimum success (87.01%) and survivability (84.71%) were found in case of basal portion used as scion but the maximum success (88.59%) and survivability (85.90%) were found in case of terminal portion used as scion. In respect of time of grafting operation, the highest success (91.38%) and survivability (88.42%) were found when grafting operation was done on 10 May but the lowest success (85.01%) and survivability (82.70%) were recorded when grafting operation was done on 25 August.

Knowledge Management: Journal