Yield and carbon sequestration of pigeon pea at different environments in Bangladesh

Pigeon pea is a multi-purpose species for agroforestry systems and subsistence agriculture especially the ability to survive with poor soil and little water and to recover from the losses caused by various biotic and abiotic stresses Therefore, this experiment was executed to find out 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 operated under three different locations viz. Gazipur, Sylhet and Madaripur during the year 2018-2019. and 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, pods/plant, seeds/pod, plant height, breadth, stem diameter and hundreds seeds weight among the environments. It was observed that the highest plant height (103.33 cm) of pigeon pea genotype was found in BPP1505 at Gazipur. BPP1504 was produced highest no of pods/plant (188.00) and hundred seed weight (9.10 gm) at Gazipur. Carbon sequestration per plant of pigeon pea (7.63 Ibs) and carbon sequestration per year (15.23 Ibs) both were highest in BPP1505 at Gazipur and lowest was found in BPP1503 at Sylhet. For stability of performance across environments, BPP1504 and BPP1505 were identified as most stable genotypes and BPP1502 and BPP1503 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, BPP1504 as the best among all, followed by BPP1505 while the rest of the genotypes were identified as inferior. Gazipur was identified as the most representative environment and highly discriminative as compared to the others.