Abstract
The main objective of this investigation was to give information on additive and non-additive (dominance and epistasis) gene actions for seed yield and its component. This information is very essential for deciding the effective selection method to be used in manipulating of segregation generations. Five parents were crossed in a triallel analysis mating design to obtain 30 three-way cross hybrids. Results revealed that the parents had pronounced variance than crosses for plant height, length of fruiting zone, number of branches/pl. and length of capsule. Meanwhile, the crosses had wider variance than parents for number of capsules/pl., seed yield/pl. and oil percentage. The parents had pronounced variance than crosses for plant height, length of fruiting zone, number of branches/pl. and length of capsule. Meanwhile, the crosses had wider variance than parents for number of capsules/pl., seed yield/pl. and oil percentage. Two line-specific effects of first and second kind as well as three line specific effects were significant for seed yield / pl. and oil percent, thus suggesting the major role of all the three types of epistatic components viz., additive x additive, additive x dominance, dominance x dominance, besides additive and dominance gene action in expression of these traits. The P4 and P5 could be utilized as grand-parents and immediately parent which showed good general combining ability of first kind (hi) and second kind (gi) for seed yield/ plant and number of capsules/plant. Whereas, (P1) recorded positively and highly significantly general line effects of both first kind (hi) and second kind (gi) for plant height and length of fruiting zone. (P4XP5XP1) showed superior per se and significantly superior tijk effects for yield/plant, number of capsules/plant and oil percent.
Highlights
The main objective of this investigation was to give information on additive and non-additive gene actions for seed yield and its component
The crosses showed higher mean squares than parents for number of capsules/pl., seed yield/pl. and oil percentage. These results indicated that the parents had pronounced variance than crosses for plant height, length of fruiting zone, number of branches/pl. and length of capsule
The triallel analysis in Table (3) shows that general line effects of both first and second kind, two line specific effects of first and second kind as well as three line specific effects were significant for seed yield/pl. and oil percentage, suggesting the major role of all three types of epistatic components viz., additive x additive, additive x dominance, dominance x dominance, in addition to the additive and dominance gene actions in the expression of these traits
Summary
The main objective of this investigation was to give information on additive and non-additive (dominance and epistasis) gene actions for seed yield and its component. This information is very essential for deciding the effective selection method to be used in manipulating of segregation generations. Results revealed that the parents had pronounced variance than crosses for plant height, length of fruiting zone, number of branches/pl. The parents had pronounced variance than crosses for plant height, length of fruiting zone, number of branches/pl. Whereas, (P1) recorded positively and highly significantly general line effects of both first kind (hi) and second kind (gi) for plant height and length of fruiting zone. Whereas, (P1) recorded positively and highly significantly general line effects of both first kind (hi) and second kind (gi) for plant height and length of fruiting zone. (P4XP5XP1) showed superior per se and significantly superior tijk effects for yield/plant, number of capsules/plant and oil percen
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
