Md. Tariqul Islam
Senior Scientific Officer
Plant Genetic Resources Centre, BARI, Joydebpur, Gazipur-1701, Bangladesh
One hundred and forty eight accessions of Pea (Pisum sativum L.) were characterized at Plant Genetic Resources Centre. The accessions showed different color variations on hypocotyls and epicotyls. Qualitative variations were observed on plant growth habit and terminal leaflet shape. Purple, deep purple and white flower were observed. The accessions produced light green and green types of edible pods and seeds. Variations were also exhibited in pod curvature, seed shape, size, color and on seed texture. All the accessions produced green stem, round edible seed and showed absence of leaf pubescence. Days to first flowering were 26 to 72 days from seedling. Good variations were observed in edible pod length (3.69 to 7.2 cm), pod width (0.65 to 1.68 cm), pod weight (0.51 to 5.96 g) and hundred seed weight (3.74 to 25.65 g). The accessions were exhibited 3.25 to 46 pods per plant, 2.75 to 9.5 secondary branches, 20.6 to 131.87 cm plant height and 2.0 to 5.9 seeds per pod. The highest CV was observed in hundred seed weight (47.04%) and the lowest in number of leaflet per leaf (4.65).
Pisum sativum, characterization, variability and Bangladesh
Plant Genetic Resources Centre, BARI, Joydebpur, Gazipur-1701, Bangladesh
Variety and Species
(i) to study the genetic variability, (ii) to identify salient features that distinguish accessions from one another,(iii) to identify the promising accessions for varietal development and (iv) to increase seeds for conservation.
The experiment was conducted with 148 accessions of Pea (Pisum sativum L.) at the Plant Genetic Resources Centre of BARI, Joydebpur, Gazipur. One hundred and fourteen accessions were obtained from Pulse Research Centre, Regional Agricultural Research Station Ishurdi, Pabna during 1980 to 1999. Twenty five accessions were obtained from Banghabandhu Shakh Mazibur Rahman Agricultural University (BSMRAU), Gazipur and the remaining 8 accessions were collected from the farmer’s field. The seeds were sown in the field on 6 November 2004. Line to line and plant to plant spacing were 50 cm and 10 cm, respectively. Each accession was in one row of 4 meter long. A basal dose of fertilizer consisting of 5 ton cow dung, 25 kg Urea, 150 kg Triple Super Phosphate and 100 kg Murate of Potash were applied for at the time of final land preparation. Twenty five kg Urea was applied as top dressing in two equal installments of 10 days after seed germination. Tilt 250 EC (1 ml in 2.5 litre water) and Vitavax 200 (2g/litre) were sprayed regularly for controlling powdery mildew and wilting. Normal cultivation techniques and intercultural operations were followed to have a good crop. The experiment was conducted in partial lattice design (14X14) with three replications. Thirty four different data on qualitative and quantitative were recorded as per Descriptor for Pea of AVRDC, Taiwan.
ANNUAL RESEARCH REPORT OF PLANT GENETIC RESOURCES CENTRE, 2004-2005
TK. 7,000
Green (145 acc.) and greenish-purple (3) colour were observed in hypocotyl and epicotyls among the pea accessions. Maximum accessions exhibited spreading (81) plant growth habit, followed by semi-erect (41), erect (24) and the minimum was prostrate type (2). Terminal leaflet shape was ovate-lanciolate (81), lanciolate (63) and ovate (4). Three types of flower colour such as purple (106), white (38) and deep purple (4) were observed. Small (82), medium (44) and large (22) edible pod size along with green (92) and light green (56) pod colour were found among the accessions. Two types of pod curvature viz. straight (82) and slightly curved (66) were observed. The seed colour was green (101) and light green (47). The accessions exhibited round (129), cuboid (17) and oval (2) dry seed shape whereas their seed size was small (84), large (40) and medium (23). Light green with black dotted (82), brown (33), light green (22), dark green (7), black (2) and green (2) of dry seed colour along with smooth (122), moderately smooth (19) and maskedly ridged (7) seed texture were noticed among the accessions. Variation for stem colour, leaf pubescence and edible seed shape was not observed. The accessions produced 3 to 6 leaflet per leaf. Terminal leaflet length and width were 2.96 and 1.7 cm, respectively. On average, the accessions exhibited 4.72 cm pod length, 0.97 cm pod width and 1.39 g pod weight. Green seed weight of ten pods was 2.80 to 17.56 g. The accessions produced 3.25 to 46 pods per plant along with 2 to 6 seeds per pod and hundred seed weight (dry) was 3.70 to 25.65 g. The accessions BD-4187 and BD-7218 may be selected for higher pods and BD-4201, BD-4209, BD-4213 and BD-4294 for late fruiting. The seeds are conserved for future use.
Report/Proceedings