YIELD AND CARBON SEQUESTRATION OF PIGEON PEA AT DIFFERENT ENVIRONMENTS IN BANGLADESH

Abstract

Pigeon pea is a multi-purpose species for agroforestry systems and subsistence agriculture especially the ability to recover from the losses caused by various biotic and abiotic stresses. So, this experiment was carried out to determine the performance of four pigeon pea genotypes for yield and yield contributing characters, stability and carbon sequestration across different environments of Bangladesh. This experiment was conducted under three different locations viz. Gazipur, Sylhet and Madaripur during the year 2018-2019. The experimental materials comprised of four pigeon pea genotypes namely G1= BPP1502, G2 =BPP1503, G3 = BPP1504 and G4 = BPP1505 and was conducted in randomized complete block design with three replications in each environment. Significant differences were observed for all the genotypes of pigeon pea against number of branches plant -1 , pods plant -1 , seeds pod -1 , plant height, breadth, stem diameter and hundred seeds weight among the environments. Highest plant height (103.33 cm) of pigeon pea genotype was observed in G4 at Gazipur. G3 produced highest no of pods plant -1 (188.00) and hundred seed weight (9.10 g) at Gazipur. Carbon sequestration plant -1 of pigeon pea (7.63 lbs) and carbon sequestration year (15.23 lbs) both were highest in G4 at Gazipur and lowest was found in G2 at Sylhet. For stability of performance across environments, G3 and G4 were identified as most stable genotypes and G1 and G2 were found least stable. On the basis of both stable performance and mean seed yield across environments, the GGE biplot ranked genotype of pigeon pea, G3 as the best among all, followed by G4 while the rest of the genotypes were identified as inferior. Gazipur was identified as most representative environment and highly discriminative as compared to the others.