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Effect of Iba on Rooting of Leaf Bud Cutting of Kew Pineapple Under Intermittent Mist

M. Biswas
Horticulture Research Centre, BARI, Gazipur-1701.

M. G. Saha
Horticulture Research Centre, BARI, Gazipur-1701.

Abstract/ Executive Summary:

Effect of IBA on rooting of leafbud cutting in kew pineapple was conducted leafbud cutting of slip gave the highest rooting (85.0%) without IBA and the lowest (21.25%) at 1.0% IBA. The percentage of rooting of leafbud cutting, weight of fresh roots, number and weight of offshoot were increased as the concentration of IBA was decreased. A greater number (23.63/crown) of offshoots was produced from leafbud cutting without IBA.

Keywords: Pineapple, Leafbud, Offshoot, IBA

Location: Central Horticulture Research Station, BARI, Joydebpur, Gazipur

Start Date: 00-00-1994

End Date: 00-00-1995

Program Area: Crop-Soil-Water Management

Commodity: Pineapple

Objectives:

To produce greater number of uniform offshoots from crowns and slips.

Methodology:

The experiment was carried out at the Central Horticulture Research Station, BARI, Joydebpur, Gazipur during September 1994 to June 1995. Freshly harvested crowns and slips of Giant Kew variety were used in preparing the cuttings. Leafuud cuttings were prepared by dividing each crown and slip into 4 longitudinal pieces in such a way that each piece contained one to two leaves along with a small slice of stem having dormant buds. Leaves were trimmed to 50-60% from the apex. Twenty leafuud cuttings were made from a single slip on the other hand it was 30 from a crown. The size of the leaf-bud cutting (length and breadth) were 8.8 and 2.06cm in slip and 8.7 and 2.30cm in crown. There were 6 treatment combinations: (a) two types of planting materials (slip and crown) (b) three levels of IBA (0, 0.5 and 1.0%). The bases of the cuttings were dipped in IBA solution for few seconds and were then potted in sterilized river silts on 26.9.94. They were placed on the mist house bench in a randomized block design with 4 replications. Twenty cuttings of each treatment constituted one replication. Misting frequency for the first 15 days was 5 second spray per 10 minutes. Misting frequency was reduced to 1 minute spray per 6 hours for the next 15 days and thereafter it was reduced to 2 minutes spray per every alternate day. Data in respect of percentage of rooting, number of offshoots produced per slip and crown, weight of offshoot, weight of roots, length of offshoots, length and width of leaf, length and number of roots were recorded on 26 June 1995. The percentages of rooting data were arcsine transformed before analysis. The data were statistically analyzed and differences among means were compared by Duncan's Multiple Range Test.

Source of Information: Bangladesh Hort.,26(1&2):56-57,1998;ISSN 0379-4288

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The percentage of rooting of leafbud cutting, weight of fresh roots, number and weight of offshoot were increased as the concentration of IBA was decreased. A greater number (23.63/crown) of offshoots was produced from leafbud cutting without IBA.

Knowledge Management: Journal