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Effect of Harvesting Stages on the Seed Quality of Lentil (lens Culinaris L.) During Storage

A. KHATUN
Senior Scientific Officer,
Planning and Evaluation Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701

G. KABIR
Professor
Department of Botany, University of Rajshahi, Rajshahi 6205

M.A. H. BHUIYAN
Senior Scientific Officer,
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701

Abstract/ Executive Summary:

Laboratory experiments were carried out during August to September 2004 and 2005 at the Seed Technology Laboratory, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh to determine the effects of harvesting stages on the seed quality of lentil. Lentil seeds of three varieties were harvested at three stages at 7-day intervals viz. i) when the pods were yellowish with a few yellow greens (H₁ stage), ii) when most of the pods were light brown with a few yellow (H₂stage), and iii) when all the pods were completely brown and dry (H₃ stage). All the seeds were stored in earthen pot until conducting the laboratory study. Non-significant variation was observed in three varieties of lentil for most of the parameters studied. The highest germination percentage, root length, shoot length , seedling length and vigor index (vigor index-!and vigor index-Il) were observed in BARI Masur-4, and the lowest in BARI Masur-2. Harvesting stage had significant effect on some parameters studied. Seeds collected at the stage when most of the pods were light brown with a few yellow (H₂ stage) recorded the highest germination percentage, dry weight, root length, shoot length, seedling length and vigor index (vigor index- I and vigor) in both the years. BARI Masur-4 seeds collected at H₂ stage recorded the highest dry weight and vigor index-I in both the years and vigor index-II in 2004.

Keywords: Lentil, Harvesting stage, Storage, Seed quality

Location: Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

Start Date: 00-08-2004

End Date: 00-09-2005

Program Area: Seed Technology

Commodity: Lentil

Objectives:

To find out the physiological maturity of harvested seeds of lentil and their seed quality.

Methodology:

Experiments were carried out at Seed Technology Division Laboratory in the Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during the period from August to September 2004 and 2005. The experiment was conducted to determine the effects of harvesting stages on seed quality of lentil under laboratory conditions. Previously lentil seeds of three varieties viz. BARI Masur-2, BARI Masur-3 and BARI Masur-4 were collected from Pulses Research Centre experimental field in rabi seasons of 2003-04 considering three different times of harvesting at 7-day intervals, viz. i) when the pods were yellowing with a few yellow greens (H ₁ stage), ii) when most of the pods were light brown with a few yellow (H₂ stage), and iii) when all the pods were completely brown and dry (H₃ stage). The collected seeds were preserved in the earthen pot. Before setting up the field experiment, laboratory experiment was carried out for recording the seed quality data. Laboratory experiments were conducted in complete randomized design with the above seeds of lentil which were collected from Pulses Research Centre, BARI, Joydebpur, Gazipur. The following quality parameters and seed vigor contributing characters were recorded:These included determination of moisture content,determination of germination percentage,measurement of root and shoot length,determination of fresh and dry weight of seedling and determination of seed vigor.

Source of Information: Bangladesh J. Agril. Res. 34(4): 565-576, December 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Non-significant variation was observed in three varieties of lentil for most of the parameters studied. The highest germination percentage, root length, shoot length , seedling length and vigor index (vgor index-!and vigor index-Il) were observed in BARI Masur-4, and the lowest in BARI Masur-2. Harvesting stage had significant effect on some parameters studied. Seeds collected at the stage when most of the pods were light brown with a few yellow (H₂ stage) recorded the highest germination percentage, dry weight, root length, shoot length, seedling length and vigor index (vigor index-! and vigor) in both the years. BARI Masur-4 seeds collected at H₂ stage recorded the highest dry weight and vigor index-I in both the years and vigor index-II in 2004.

Knowledge Management: Journal