Assessment of variability and understanding of traits relationship in eggplant species are vital pre-requisite for formulating an effective breeding programme.We studied 23 genotypes of eggplants in a coarse-textured ...Assessment of variability and understanding of traits relationship in eggplant species are vital pre-requisite for formulating an effective breeding programme.We studied 23 genotypes of eggplants in a coarse-textured Ultisol using a randomized complete block design experiment with three replications.Data were collected on number of branches,number of leaves,number of nodes and internodes,stem diameter,plant height,floral and yield traits.Results revealed significant(p=0.05)variation in the flowering and fruiting pattern of the genotypes.‘Yalo x K3BC2P10 gave the highest individual fruit weight of 80.8 g.Individual fruit weight contributed the highest direct positive effect on the fruit yield.It acted majorly through plant height,number of branches,number of leaves and number of days to first fruit set as revealed in the path coefficient result.Individual fruit weight,number of fruits per plant,plant height,number of days to 50%flowering,number of branches,numbers of days to first flowering and 50%fruit set had positive direct effect on yield.These traits should be considered in developing high yielding eggplant breeding programme.展开更多
The objective of this work was to evaluate four parental lines of cucumber which included:‘Zeina’(Zna),‘Beit Alpha’(BA),‘Straight 8’(Strght 8)and‘Calypso’(Capso)and six F1s generated by diallel cross,using ran...The objective of this work was to evaluate four parental lines of cucumber which included:‘Zeina’(Zna),‘Beit Alpha’(BA),‘Straight 8’(Strght 8)and‘Calypso’(Capso)and six F1s generated by diallel cross,using randomized complete block design with three replications to study heterosis and combining ability for yield and yield component traits.Estimated heterosis showed that cross‘ZnaCapso’had the highest Better Parent(BP)heterosis in total fruit yield/ha while‘BACapso’had the highest Mid Parent(MP)heterosis in the same trait.Significant general(GCA)and specific(SCA)combining ability variances were obtained in all the traits implying that both the additive and non-additive gene effects operated in the genetic expression of the traits.Relative magnitude of GCA and SCA variances indicated preponderance of additive gene action for all the traits.‘Beit Alpha’and‘Straight 8’are best general combiners while‘BACapso’and‘CapsoStrght 8’were the best specific combiners for total fruit yield.展开更多
文摘Assessment of variability and understanding of traits relationship in eggplant species are vital pre-requisite for formulating an effective breeding programme.We studied 23 genotypes of eggplants in a coarse-textured Ultisol using a randomized complete block design experiment with three replications.Data were collected on number of branches,number of leaves,number of nodes and internodes,stem diameter,plant height,floral and yield traits.Results revealed significant(p=0.05)variation in the flowering and fruiting pattern of the genotypes.‘Yalo x K3BC2P10 gave the highest individual fruit weight of 80.8 g.Individual fruit weight contributed the highest direct positive effect on the fruit yield.It acted majorly through plant height,number of branches,number of leaves and number of days to first fruit set as revealed in the path coefficient result.Individual fruit weight,number of fruits per plant,plant height,number of days to 50%flowering,number of branches,numbers of days to first flowering and 50%fruit set had positive direct effect on yield.These traits should be considered in developing high yielding eggplant breeding programme.
文摘The objective of this work was to evaluate four parental lines of cucumber which included:‘Zeina’(Zna),‘Beit Alpha’(BA),‘Straight 8’(Strght 8)and‘Calypso’(Capso)and six F1s generated by diallel cross,using randomized complete block design with three replications to study heterosis and combining ability for yield and yield component traits.Estimated heterosis showed that cross‘ZnaCapso’had the highest Better Parent(BP)heterosis in total fruit yield/ha while‘BACapso’had the highest Mid Parent(MP)heterosis in the same trait.Significant general(GCA)and specific(SCA)combining ability variances were obtained in all the traits implying that both the additive and non-additive gene effects operated in the genetic expression of the traits.Relative magnitude of GCA and SCA variances indicated preponderance of additive gene action for all the traits.‘Beit Alpha’and‘Straight 8’are best general combiners while‘BACapso’and‘CapsoStrght 8’were the best specific combiners for total fruit yield.
