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Effect of Harvest Fruit Storage Period on Seed Quality of Pumpkin

REMI CHAKMA
Seed Technology Division, BARI, Gazipur

M. N. ISLAM
Seed Technology Division, BARI, Gazipur

A. NESSA.
Seed Technology Division, BARI, Gazipur

Abstract/ Executive Summary:

A field experiment was conducted in the field of Seed Technology Division, BARI, Joydebpur, during December 2014-April 2015 to evaluate appropriate post harvest fruit storage period for quality seed production. Seed quality was observed up to 1months of storage. The seed of 1^st month stored fruit gave better quality in terms of germination percent, seedling dry weight and vigour index. Seed quality parameters were analysed up to one months of storage

Keywords: Effect, Harvest fruit storage,Seed quality, Pumpkin

Location: Seed Technology Division, BARI, Joydebpur

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Seed Technology

Commodity: Pumpkin

Objectives:

To evaluate appropriate post harvest fruit storage period for quality seed production.

Methodology:

A field experiment was laid out in the farm of seed Technology Division, BARI, Gazipur during rabi 2014-2015 under Randomized block design with four replications. The variety was BARI Misti kumra 2. The unit plot size was 4 x 3m with 2 plants in each plot. Well-matured pumpkin fruits were harvested and stored at ambient condition. The fruits were kept on wooden table in a scattered manner. Every month, fruits were weighed individually and loss of weight was recorded in each month. The seeds extracted from respective treatments were cleaned manually and fresh weight was noted and expressed in gram. Dry weights of seeds were also recorded after proper dried in the sun. The moisture content of the seeds was estimated by high constant temperature (drying at 130⁰C for 1 h) oven method (ISTA, 1999.)After drying the seed to 8 percent moisture content, the weight of three replicates of 100 seeds each were recorded and expressed in gram. Germination test was conducted using sand medium. Number of normal seedlings alone was counted after eight day and expressed in percentage. Dry weights of the seedlings were estimated after drying them in an oven maintained at 70⁰C for 72 h.

Source of Information: Annual Research report,2014-2015Seed Technology Division, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

With the advancement of storage the fresh seed weight was decreased from initial stage. After one months of storage, the initial seed weight was 21.92 g which was reduced to 15.27 gm and 21.12 to 14.87 g in BARI Mistikumra 2 and Local Variety accordingly. The 100 seed dry weight was increased from initial after one months of storage in both varieties. Loss of water might be the reason for the difference in dry and fresh seed weight and after ripening process increased the dry matter accumulation in stored seeds. Germination of seeds after one month of storage was increased markedly from 59% to 88% and 71% to 100% in BARI Mistikumra 2 and Local Variety respectively. The continued development of mature embryos and development of desiccation tolerance during post harvest ripening might be the probable reason for better germination during these periods of storage (Fig 3). The very low germination (59%) was observed in fresh harvested fruit in BARI MIstikumra 2 before storage might be due to the dormancy associated with fresh seeds. These results are similar with the reports by Ahmed et al, 1987 and Nerson, H, 1991 in brinjal and cucurbits, respectively. The germination percentage increase from initial to one months of storage. Probably the seeds have dormancy at initial stage which removes after on months of storage.

Knowledge Management: Report/Proceedings