Direct and indirect effects of yield components and water use efficiency related traits on seed yield in F2 populations of three superior crosses of mungbean Reddy B Rupesh Kumar1,*, Reddy K Hariprasad1, Reddy D Mohan2, Sudhakar P3, Reddy B Ravindra1 1SV Agricultural College, Tirupati-517502, Andhra Pradesh, India 2Regional Agricultural Research Station, Tirupati-517502, Andhra Pradesh, India 3O/o The Controller of Examinations, Acharya NG Ranga Agricultural University Lam, Guntur-522034, Andhra Pradesh, India *Email for correspondence: rupeshkumarreddyb@gmail.com
Online published on 6 December, 2021. Abstract Water stress and heat stress are prominent which highly influence the mungbean productivity. The present investigations were conducted to determine the genetic potential of mungbean genotypes with high yield and drought and heat stress tolerance. Path coefficient analysis was carried out in F2 populations of three superior crosses of mungbean viz ML 267 X LGG 528, MGG 390 X LM95and LM 95 X EC 362096 for fourteen quantitative characters to estimate the direct and indirect effects of the individual character on yield. The path analysis for seed yield revealed that direct effect of number of pods per plant was high and positive in all the three F2 populations of ML 267 × LGG 528, MGG 390 × LM 95 and LM 95 × EC 362096. It indicates that this trait is the major contributing factor to seed yield and hence emphasis should be given on this character while making selection for realizing improvement in seed yield in mungbean. In the cross ML 267 × LGG 528, number of pods per plant, harvest index, number of pods per cluster and 100-seed weight which exhibited positive direct effects may be considered as the most important yield contributing characters and appropriate prominence should be placed on these components during selection. In the cross MGG 390 × LM 95, selection based on number of pods per plant, specific leaf area, 100-seed weight and number of branches per plant may result in high yielding types. In the cross LM 95 × EC 362096, emphasis should be laid on number of pods per plant, number of pods per cluster, days to maturity and SCMR during selection for breeding high yielding types. Top Keywords Mungbean, Path coefficient analysis, Water use efficiency, Yield components. Top |