M. BELAYET HOSSAIN
Jabor Hat College, Pirgonj, Thakurgaon, Bangladesh
M. WALIUR RAHMAN
M.S Student
Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, Bangladesh
M. N. RAHMAN
Assistant Professor
Department of Soil Science, HSTU, Dinajpur, Bangladesh
A.H.M. NOORUL ANWAR
Lecturer
Agricultural Science, Government Mujibur Rahman Women’s College, Bogra, Bangladesh
A.K.M.M. HOSSEN
Associate Professor
Department of Soil Science, HSTU, Dinajpur, Bangladesh
Water stress, Yield attributes and yield, Mungbean genotypes
Experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur
Variety and Species
A field experiment was conducted at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during the kharif season (April to June 2004). The experimental site is located at the centre of Madhupur Tract (240 09’ N latitude and 90026’ E longitude) having an elevation of 8.2 m from sea level (Anonymous, 1989). The experiment was conducted under rain free shed condition. The field was possible to cover by a moving house made by stainless steel frame and transparent polythene sheet was used as shed. The soil type of the experimental field belongs to the Shallow Red Brown Terrace type under Salna Series of Madhupur Tract (Brammer, 1971; Saheed, 1984) of Agro Ecological Zone (AEZ) 28, which is characterized by silty clay with pH value of 6.5. Twenty seven Mungbean genotypes collected from Asian Vegetables Research and Development Centre (AVRDC), Taiwan were included in the present investigation. The accession numbers of the genotypes were GK 11, GK 13 GK 15, GK 16, GK 17, GK 18, GK 19, GK 22, GK 23, GK 24, GK 25, GK 26, GK 27, GK 28, GK 29, GK 30, GK 32, GK 33, GK 35, GK 37, GK 38, GK 39, GK 40, GK 42, GK 43, GK 45 and GK 47. The sowing was done on 17 April, 2004 with slight watering in the line just to supply sufficient moisture need for quick germination. The fertilizers were applied as per recommendation of Fertilizer Recommendation Guide 1997. At physiological maturity, dry pods were harvested at different days after sowing (DAS) for different genotypes. The data of different physio-morphological, reproductive, seed yield and related attributes were recorded from the present investigation to obtain the precise information pertaining to genotypic differences. Shoot of five Mungbean plants form each line was carefully separated at mature stage. Fresh weight of fully expanded third trifoliate leaves from the top was taken. The leaf and stem were kept immersed in distilled water for 24 h at room temperature in the dark. The turgid weights of the leaf and stem were then measured. Afterwards the materials were oven-dried at 800C for 72h to take dry weight.
The fresh, turgid and dry weights of the leaf and stem were used to determine relative water content (RWC) of leaf using the following formula:
Relative Water Content (RWC) = (Fresh weight – dry weight) ÷ (Turgid weight – dry weight)X 100
The statistical analysis for various characters under investigation was done and the analysis of variance for each of the characters was performed by F (variance ratio) test. The treatment means were separated by Duncan’s New Multiple Range Test.
Int. J. Sustain. Crop Prod. 5(1)19-24, (2010)
Journal