Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Genetic Variability in Pigeonpea (cajanus Cajan L. Millspaugh)

A.Hamid
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.

A. Husna
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.

M. M. Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.

M. R. Islam
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.

Abstract/ Executive Summary:

One hundred germplasm lines were evaluated for variation in morphological and agronomic traits for selection of cultivar potentially suitable for growing in Bangladesh under rice-based cropping systems during the fallow period after kharif II season. A wide range of' variation was found in twelve quantitative plant traits. The most important correlations corresponded to eight plant traits. Considering these traits, PCA could explain 76.2% of' total variance. Based on cluster analysis, the genotypes were grouped into seven clusters. each cluster with greater similarities. Plant height, days to flowering and pods plant^-1 were the discriminating variables mostly contributed in grouping the genotypes. Pods plant^-1 played the most dominant role in explaining the maximum variance according to DFA. Genotypes grouped in 1, 4 and 7 clusters were early maturing and high yielder as compared to the other cluster members. Genotype 21 (ICP7143) representing group 1 showed promising for its short stature nature. However. genotype 32 (ICP7989) representing group 4 produced the highest yield with the shortest maturity duration. These two genotypes arc particularly promising for growing in fallow period after the harvest of transplanted aman or kharif ll crops.

Keywords: Pigconpea, Genotypes, Variation, Growth, Yield

Location: Field Research Farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Start Date: 00-10-2002

End Date:

Program Area: Variety and Species

Commodity: Pigeonpea

Objectives:

To identify dwarf and extra short duration genotypes in pigeonpea.

Methodology:

The experiment was conducted in the Field Research Farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur located at 24⁰5' N latitude and 90⁰16^/ E longitude. Nearly 26% of the average annual rainfall (2270 mm) was received from the north-west monsoon during the study period and minimum and maximum temperatures recorded during period of plant growth were 18.1⁰C and 34.3⁰C respectively. Pigeonpea germplasm lines for the present investigation were collected from the International Crops Research Institute tor the Semi-Arid Tropics (lCRISAT). A total or 100 genotypes of diverse provenance were selected from the germplasm lines collected from the ICRISAT and planted on 31^st October 2002. The plot size was 2.5mx 1.5m and twenty five plants of each genotype were grown in rows at 50 cm x 10 cm configuration. Appropriate cultural practices were followed to raise a healthy crop. Data were recorded on twelve traits viz. seedling emergence per cent, speed of germination, seedling vigour, seedling morphology, plant height, days to first flowering, days to 50% flowering, days to maturity, pod length, no. of pods per plant, no. of seeds per pod and seed yield per plant. Seedling emergence percentage was calculated on 12 days after seeding (DAS) as the ratio between total number of seeds sown to number of normal seedlings emerged. Speed of germination and seedling vigor were calculated. Five plants of each genotype in the row were selected randomly to record plant height, yield attributes and seed yield. Correlation was estimated among the plant characters according to Pearson's co-efficient and derivation of variables using principal component analysis (PCA) was based on correlation matrix. Non-hierarchical K-means cluster was performed to classify the genotypes into a number of groups and discriminant function analysis (DFA) was employed for conforming the grouping of genotypes.

Source of Information: Electronic Journal of Plant Breeding, 2( 1): 117- 123 (Mar 2011), ISSN 0975-928X

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results clearly demonstrated that a wide range or genotypic variation existed in seedling quality, phenology and seed yield. The genotypes under group 4 showed high yield potential and comparatively early maturing and genotypes of group I also performed better. The genotypes under these groups are particularly promising for the adaptation in transplanted aman cropping pattern. Further studies on morpho-physiological response of selected genotypes will help in better understanding of the genotypes for the identification and development of short duration pigeon pea. It is suggested that research directed towards molecular approach for selecting traits of interest should be carried out.

Knowledge Management: Journal