Combining ability and heritability of fruit characteristics and capsacinoid content of pepper (Capsicum annuum L.) grown under high temperature
2013
EAM0462
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Details
Title
Combining ability and heritability of fruit characteristics and capsacinoid content of pepper (Capsicum annuum L.) grown under high temperature
Contributor
Lanteri, S. Book author
Rotino, G.L. Book author
Rotino, G.L. Book author
Meeting Name
EUCARPIA Meeting on Genetics and Breeding of Capsicum and Eggplant, 15th Torino 2-4 September 2013 Italy
Imprint
Torino Comitato per l’organizzazione degli eventi (COE) DISAFA, Università degli Studi di Torino Italy
Publication Date
2013
Description
p. 87-94
Call Number
EAM0462
Summary
Pepper (Capsicum annum L.), the most important Solanaceous vegetable crop grown in open fields in Tunisia, is in great demand both in local (fresh and powder) and international markets (‘harissa’). We investigated the combining ability and heritability of fruit parameters and capsaicinoid content in a diallel cross involvingsix divergent local hot pepper varieties. The magnitudes of variance due to general combining ability (GCA) as well as specific combining ability (SCA) were highly significant for all traits indicating the importance of both additive and non-additive gene action. The high GCA/SCA ratio for placenta length (10.27), fruit length (8.01), fruit diameter (6.46), capsaicin (1.57), dihydrocapsaicin (2.83) and nordihydrocapsaicin (4.62) indicate that these traits are predominantly controlled by additive gene action. Broad and narrow sense heritability was high for fruit length (77 and 91%) as well as for fruit diameter (73 and 81%) and capsaicinoid content (45 and 95%). Variety ‘Chaabani’ had the longest fruit, and the GCA\n effect was positive and highly significant, while ‘BakloutiEssahel’ and ‘BakloutiKairouan’ had the widest and heaviest fruit. Genetic effect analysis (Sij) of some crosses in which ‘Chaabani’ was one of the parents revealed the efficiencies to fruit length. High total capsaicinoids content was recorded for ‘Rouge Long’ (2080 μg.g-1DW), ‘PimentSisseb’(1747 μg.g-1DW) and ‘Chaabani’ (840 μg.g- 1DW) having highly significant and positive GCA values (314**, 397** and 186**, respectively). The best crosses related to fruit characteristics and capsaicinoid content were ‘Rouge long’x‘Chaabani’, ‘PimentSesseb’x‘Chaabani’ and ‘Chaabani’x‘BakloutiEssahel’.
Book Title
Breakthroughs in the genetics and breeding of capsicum and eggplant; Proceedings of the XV EUCARPIA meeting
Contact Information
harvest@worldveg.org
Record Appears in
Research > Published Articles