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Performance of Exotic Guava Germplasm at BARI, Gazipur

Khadijatul Kobra
Scientific Officer
Pomology Division, Horticulture Research Center, BARI, Gazipur

Abstract/ Executive Summary:

Quantitative and qualitative characteristics of six exotic guava germplasm were evaluated at HRC, BARI, Gazipur on 2011-12. Variability among the lines was recorded in terms of quantitative and qualitative characteristics. The highest plant highest and base girth was found in PG Ex-004(4.90 m and 46.60 cm, respectively) and the lowest were noted in PG Ex-005(3.37 m and 18.80 cm, respectively). The highest leaf area was recorded in PG Ex-004 (54.33 cm²) and the lowest in PG Ex-001 (30.68 cm²). Harvesting date ranged from 3^rd week of July (PG Ex-003) to 2^nd week of August (PG- Ex 002). Maximum fruits/plant were obtained from PG Ex-003 (186) and minimum from PG Ex-005 (45). The biggest fruit was obtained from PG Ex-001 (234 g) and the smallest in PG Ex-003 (120 g). The thickness of mesocarp ranged from 1.15 cm (PG Ex-001) to 1.70 cm (PG Ex-004). Number of seeds/fruit varied from 206 (PG Ex-003) to 309 (PG Ex-005). The germplasm PG Ex-001 exhibited higher TSS in mesocarp (10.90%) but TSS in endocarp was noted higher in PG Ex-003 (13.00%). Most of the germplasm had smooth to semi smooth skin surface with light green colour. Flesh colour varied from white to pink.

Keywords: Exotic guava, Evaluation, Mesocarp thickness, Fruit characteristics

Location: Horticulture Research Center, BARI, Gazipur

Start Date: 01-04-2011

End Date: 30-11-2012

Program Area: Variety and Species

Commodity: Guava

Objectives:

To study the adaptability and performance of collected exotic guava germplasm at Bangladesh.

To study the growth, yield and fruit characteristics of exotic guava germplasm

To select suitable guava variety having good growth, higher yield and fruit quality.

Methodology:

The experiment was conducted at the Fruit Research Farm of Horticulture Research Centre, BARI, Gazipur during April 2011 to November 2012. Six exotic germplasm of guava and local check were included in this study. These were PG Ex-001, PG Ex-002, PG Ex-003, PG Ex-004, PG Ex-005, PG Ex-006 and BARI Peyara-2. One year old seedlings of guava genotypes were planted on 27 November 2007 at a spacing of 4 × 4m. The experiment was laid out in randomized complete block design (RCBD) with five replications. A single tree of each germplasm constituted the unit of replication. The trees were fertilized with recommended doses of manure and fertilizers (HRC, 2005) during February, May and September. Intercultural operations such as weeding and ploughing were done in September, March, May and July. Mulching was done in November. Irrigations were applied at flowering stage and fruiting stage. Necessary actions were taken against pests and diseases as and when needed. Data on tree growth as well as quantitative and qualitative characteristics of fruit was recorded as per ‘Tropical Fruit Crop Descriptors’ (IBPGR, 1980). Leaf area was measured using the formula of Leaf area (cm²) Y = K.X, where K is constant (0.737) and X = the length of leaf × the breadth of leaf. The incidence of insect and diseases were also recorded in natural epiphytotic condition.

Source of Information: Research Report on Horticultural Crops 2012-13. Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20000/-

Total Budget (Tk.) : 20000/-

Achievement/Findings:

Among the germplasm harvesting date ranged from 3rd week of July to 2nd week of August. Considering fruits/plant PG Ex-003 performed better. The germplasm PG Ex-001 was superior regarding fruit size. The PG Ex-004 was better for the thickest of mesocarp. Wide variation in quantitative and qualitative characteristics among the exotic guava germplasm indicate ample scope of crop improvement through selection.

Knowledge Management: Report/Proceedings