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- Title
INHERITANCE OF PUNGENCY IN THAI HOT PEPPER (Capsicum annuum L.).
- Authors
TEMPEETIKUL, VEERAYA; TECHAWONGSTIEN, SUCHILA; LERTRAT, KAMOL; TECHAWONGSTIEN, SUNGCOM
- Abstract
To develop new improved varieties of hot pepper (Capsicum annuum) L.) with the desired pungency, suitable parental lines and mode of inheritance for pungency is prerequisite. Two experiments were conducted at the experimental farm, Faculty of Agriculture, Khon Kaen University, Thailand. In the first experiment, 5 hot pepper lines with different pungency levels were used in a half diallel mating design to develop 10 F1 crosses. All the F1s and parents were evaluated to determine combining ability and heterosis. Based on the first experiment, variety Yodson (YS) and Num Chiangmai (NM) were selected in the second experiment due to their good combining ability for pungency. Both these lines were used to develop a set of F1, F2 and their backcross (BC1P1 and BC1P2) generations to study the inheritance of pungency. The results from the first experiment showed that the crosses derived from 'YS' had maximum mean values for all the capsaicinoids. They were also superior to their parents in terms of capsaicinoid quantity. 'YS' was considered a good parent because of its high actual mean value and high general combining ability (GCA) for all capsaicinoid traits. The F1 hybrid 'YS/NM' had high specific combining ability (SCA) for all capsaicinoids. In addition, narrow-sense heritability for capsaicinoids in YS/NM was moderate to high for total capsaicinoids (0.62). Generation mean analysis indicated a large magnitude of dominance, and dominance by dominance gene effects for all capsaicinoids.
- Subjects
THAILAND; HOT peppers; CAPSICUM annuum; HERITABILITY; PUNGENCY
- Publication
SABRAO Journal of Breeding & Genetics, 2013, Vol 45, Issue 2, p248
- ISSN
1029-7073
- Publication type
Article