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Regional Yield Trial of Lentil (2016--2017)

M. J. ALAM
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M. B. ANWAR
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M. S. ZAMAN
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M. M. HOSSAIN
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

A. K. M. M. ALAM
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Abstract/ Executive Summary:

The experiment was carried out to determined the performance of twelve genotypes for yield and yield contributing characters, stability and reaction against a disease that was evaluated in four different locations viz. Ishurdi, Gazipur and Jessore during Rabi, 2016-17. Significant variation was observed for days to flower, days to maturity, pods per plant, 100 seed weight and yield in kg per hectare. The lowest days to maturity were recorded in LRIL 22-70. Large seed size was recorded in BLX 09015. Considering yield performances in GGE biplot analysis BLX 09015 and LRIL 22-70 were found better compared to others.

Keywords: Evaluation, Genotypes, Regional Yield Trial, Lentil

Location:

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Variety and Species

Commodity: Lentil

Objectives:

As a step of breeding work, after evaluation of genotypes in PYT is necessary to evaluate them in the Regional Yield Trial in a single or multiple locations to assess their performance.

Methodology:

The experiment consisted of six entries including BARI Masur- 6 and 7 as check. It was conducted at three locations, Pulses Research Centre, Ishurdi, RARS Jessore, and Gazipur during Rabi 2016-17 (16 to 23 November) in a RCB design with 3 replications. Each entry was sown in unit plot of 8 rows X 4 m long with a spacing of 40 cm between rows. Spacing between two plots was 40 cm. Seeds were sown in the rows carefully by hands at 3 cm depth and covered by soils. Post sowing irrigation was given to ensure seed germination. Mulching was done and crusts were broken. Weeding was done to keep the plots free from weeds. Each of the entries was observed seedling to harvest and compared with checks. Grain yield was calculated from the plot. Yield contributing characters were taken from the 10 randomly selected plants from the middle rows of each plot. Data were analyzed statistically by using MSTAT-C and R-program.

Source of Information: Annual Research Report 2016-2017, Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

There was a significant variation among the genotypes regarding days to flower, days to maturity, pod per plant, 100 seed weight and yield in kg per hectare. In the case of maturity among the location, BLX 09015 was earlier at Jessore and Gazipur and also showed maximum seed weight (4.0g) at Jessore. The lowest days to maturity were recorded in BLX-09015. Among the test entries, BLX 04005-9 showed the highest numbers of pods/plant (76.5) at Ishurdi and Jessore followed by BARI Masur-6 and except BARI Masur-7. Apart from these highest seed weight was observed in BLX 09015 from the mean values of three locations. GGE biplot analysis was done to find out stable genotypes among locations. GGE biplot is exploited for the graphical display of G×E pattern of yield trial data with several advantages. The yield of each genotype in a tested environment is a result of the genotypic main effect (G), environmental main effect (E) and genotype × environment (GE) interaction. In this experiment, the first two PCs of the GGE model explained 100% of the variation in G+GE. Six genotypes represent a polygon and the genotypes corner of the polygon most responsive genotypes. The genotypes LRIL-22-133 showed most interaction with the environment followed by BARI Masur- 6 and 7. All the entries distributed into four sectors. Among the tested location, Jessore and Ishurdi had larger environmental vectors indicating high discriminating ability. Considering biplot analysis and yield data genotype BARI Masur-7, BLX04005-9, BLX09015, showed stable performance across the locations. LRIL 22-70 was stable for Gazipur and Ishurdi locations. GGE biplot of yield showed entry BLX 09015 was a more stable genotype for Jessore and Ishurdi locations.

Knowledge Management: Report/Proceedings