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Evaluation of Local Superior Papaya Germplasm

M. A. Rahman
SSO
Fruit Research Station, Binodpur, Rajshahi

Abstract/ Executive Summary:

Ten papaya lines were evaluated at Binodpur, Rajshahi during January 2008 to January 2009. The data on plant characteristic, yield and fruit quality were studied. Among the papaya lines, the tallest plant (3.03 m) were observed in HRCP-1 while it was shortest (2.54 m) in HRCP-9. The highest base girth (45.50 cm) was recorded in HRCP-2. The line HRCP-2 and HRCP-4 produced the maximum number of fruit (31.50) per plant followed by HRCP-1(31.25). The line HRCP-5 produced the heaviest fruit (2223 g) followed by HRCP-3 and HRCP-7. Lowest fruit weight was recorded in the line HRCP-8 which was statistically identical with HRCP-1, HRCP-2, HRCP-4, HRCP-6,HRCP-9 and Shahi pepe. The highest fruit yield (59.5 kg) per plant was produced by HRCP-3 followed by HRCP-1, while it was lowest (28.80 kg per plant) in HRCP-8. Highest cavity length was recorded in the line HRCP-2which was statistically identical with HRCP-1, HRCP-3 and HRCP-5. Pulp thickness were found insignificant among the lines. Highest TSS was observed in the variety Shahi pepe followed by HRCP-8 and HRCP-9. They were statistically identical among themselves. Lowest TSS was recorded in HRCP-2 followed by HRCP-3. Statistically identical seeds/fruit were recorded in all the lines except HRCP-8.

Keywords: Evaluation, Ppapaya, Germplasm, Disease

Location: Binodpur, Rajshahi

Start Date: 01-01-2008

End Date: 31-01-2009

Program Area: Variety and Species

Commodity: Papaya

Objectives:

To develop high yielding, disease tolerant papaya variety through selection.

Methodology:

The experiment was conducted at Fruit Research Station, Binodpur, Rajshahi during January 2008 to January 2009. The papaya lines included in this study were HRCP –1, HRCP –2, HRCP –3, HRCP –4, HRCP –5, HRCP –6, HRCP –7, HRCP –8, HRCP-9 and Shahi pepe. Shahi pepe used as check. Seeds of all the lines were sown singly in polybag on 21 January, 2008. The growing media in the polybags contains sandy loam soil and well-decomposed cow dung in 2:1 proportion. Non replicated row planting system was followed. Plant to plant distance was 2.0 m. The plants were fertilized with 15 kg organic fertilizer, 500 gm urea, 500 g TSP, 50 g MP, 250 g gypsum, 25 g Boric acid and 20 g Zinc sulphate. Whole amount of organic fertilizer, TSP, Gypsum, Boric acid and zinc sulphate were applied at the pit. Urea and MP were applied @ 50 g/plant at an interval of one month. The intercultural operations (weeding, irrigation, insecticide spray etc.) were done as and when necessary. Data on plant height (m), base girth (cm), no. of fruit/ plant, individual fruit weight (kg), yield/plant (kg), fruit length (cm), fruit breadth (cm), TSS (%), flesh colour, no. of seed/fruit were recorded. The information’s on different characters were statistically analyzed.

Source of Information: Research Report on Horticultural Crops 2008-09. Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

Among the lines HRCP–3 and HRCP-1 were found superior in respect of yield and fruit quality and might be recommended for future evaluation.

Knowledge Management: Report/Proceedings