Title of article :
Diallel Analysis for Seed Yield and Related Traits in an Energy Crop Jatropha curcas
Author/Authors :
ISLAM, A.K.M. AMINUL Universiti Kebangsaan Malaysia - Faculty of Engineering Built Environment - Department of Chemical and Process Engineering, Malaysia , ISLAM, A.K.M. AMINUL Bangabandhu Shiekh Mujibur Rahman Agricultural University - Faculty of Agriculture - Department of Genetics and Plant Breeding, Bangladesh , ANUAR, NURINA Universiti Kebangsaan Malaysia - Faculty of Engineering Built Environment - Department of Chemical and Process Engineering, Malaysia , YAAKOB, ZAHIRA Universiti Kebangsaan Malaysia - Faculty of Engineering Built Environment - Department of Chemical and Process Engineering, Malaysia , GHANI, JAHARAH A. Universiti Kebangsaan Malaysia - Faculty of Engineering Built Environment - Department of Mechanical and Material Engineering, Malaysia , OSMAN, MOHAMAD Universiti Teknologi MARA (UiTM) - Faculty of Plantation and Agrotechnology, Malaysia
Abstract :
Six parents (P1, P2, P3, P4, P5 and P6) half diallel population of Jatropha curcas were evaluated to determine the combining ability, genetic components of variance and heterosis for yield contributing traits. Diallel analysis showed that both additive and dominance gene action was responsible for the genetic regulation of all the traits under study. The cross combination P1 × P3 showed the highest positive specific combining ability for seed yield per plant. Combining ability results were also in close agreement with the findings of estimate of genetic components of variance. The seeds per fruit (89%) and 100-seed weight (93%) showed maximum narrow sense heritability. Seed yield per plant showed high mid parent (254.13%) and better parent (202.36%) heterosis in the cross combinations of P2 × P5 and P1 × P3, respectively. The parents of P1, P2, P3 and P5 were found to be superior for seed yield components when used in cross. Considering seed production for each plant, the hybrids P1 × P2, P1 × P3, P2 × P5 and P4 × P6 could be selected for the development of hybrid varieties.
Keywords :
Breeding , combining ability , fruit yield , heterosis , Jatropha curcas
