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Growth, Yield and Biochemical Assessment of Grasspea Genotypes

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

M. E. Hoque
Former MS Student
Department of Crop Botany, BAU, Mymensingh

A. K. M. Azad-ud-doula Prodhan
Professor
Department of Crop Botany, BAU, Mymensingh

Abstract/ Executive Summary:

A pot experiment was conducted to evaluate the growth and yield of four grasspea genotypes viz. Binakhesari-1, GPM-1 W, GPM-2W and GPM-3W at the potyard of the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during November 2005 to March 2006. The experiment was laid out in randomized complete block design with three replications. Chlorophyll, nitrate reductase activity, total sugar, reducing sugar and amino acid contents in leaves were estimated 50 days after sowing (DAS) and N from mature seed and stem. Morphological attributes were recorded at 60 DAS to maturity at 10 days' interval and yield attributes at maturity. The genotypes showed variations in respect of some morphological characters and yield components. All the genotypes showed the highest plant height at 80 DAS and thereafter it did not increase significantly. Number of branches and leaf area plant^-1 were maximum at 70 DAS. Leaf dry weight was maximum at 70 DAS and thereafter it did not vary significantly. The grasspea genotypes produced the highest total dry matter plant^-1 at maturity. The genotype GPM-1W showed superiority in all respects while GPM-2W ranked second and other two genotypes were intermediate in growth and yield performances.

Keywords: Growth, Yield, Biochemical parameters and Grasspea

Location: Crop Physiology Division of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

Start Date: 01-11-2005

End Date: 30-03-2006

Program Area: Crop-Soil-Water Management

Commodity: Grasspea

Objectives:

The objective of the study was to evaluate grasspea genotypes in respect to growth, yield and biochemical attributes.

Methodology:

The experiment was conducted with four grasspea genotypes viz., Binakhesari-1, GPM-1W, GPM-2W and GPM-3W at the potyard of Crop Physiology Division of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during the period from November 2005 to March 2006. A total of 60 plastic pots were prepared with 9 kg processed soil pot^-1. The depth and radius of the pot were 22 and 9 cm, respectively. The experiment was laid out in randomized complete clock design with three replications. Urea, TSP and MP at 0.31, 0.58, and 0.40 g pot^-1 were applied corresponding to 35, 28 and 38 kg ha^-1 N, P and K, respectively. The crops were harvested 5 times at 10 days' interval starting from 60 days after sowing (DAS). Data on biochemical parameters viz., chlorophyll, total sugar, nitrate reductase activity and amino acid contents in leaves were recorded at 50 DAS and nitrogen percentage from mature stem and seed. Total chlorophyll, nitrate reductase activity, total sugar and reducing sugar content in leaves were estimated following the methods of Amon (1949), Stewart and Orebamjo (1979), Dubois et al. (1956), Somogyi (1952) and Nelson (1944), respectively. Data on plant height, number of branches and total dry matter plant^-1 were recorded 5 times starting from 60 DAS to maturity at 10 days' interval. As there was no green leaf at 90 DAS and maturity, so data on the number of green leaves, leaf area and leaf dry weight plant^-1 were recorded 3 times at 60, 70 and 80 DAS. Yield and yield attributes were also recorded at maturity (100 DAS). Data on morphological parameters were analyzed statistically. The mean differences among the genotypes were evaluated by DMRT.

Source of Information: J. Bangladesh Soc. Agric. Sci. Technol., 4(1 & 2): 109-112, 2007

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The grasspea genotypes showed variations in respect of some morphological characters and yield components. All the genotypes showed the highest plant height at 80 DAS and thereafter it did not increase significantly. Number of branches and leaf area plant^-1 were maximum at 70 DAS. Leaf dry weight was maximum at 70 DAS and thereafter it did not vary significantly. The grasspea genotypes produced the highest total dry matter plant^-1 at maturity. The genotype GPM-1W showed superiority in all respects while GPM-2W ranked second and other two genotypes were intermediate in growth and yield performances.

Knowledge Management: Journal