Breeding for the improvement of the ideal plant type of sesame

The objective of this study was to improve the ideal type of sesame, by performing pedigree selection applied to segregating generations of crosses of genotypes with contrasting characters. In the segregating F2 population, the progeny were classified into eight types according to the combinations o...

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Bibliographic Details
Published in:Plant breeding 2005-06, Vol.124 (3), p.263-267
Main Author: Baydar, H
Format: Article
Language:English
Subjects:
agronomic traits
Agronomy. Soil science and plant productions
Biological and medical sciences
breeding
crop yield
fatty acid composition
fatty acids
Fundamental and applied biological sciences. Psychology
genetic improvement
Genetics and breeding of economic plants
linoleic acid
long chain fatty acids
oil
oilseed crops
oleic acid
plant architecture
plant breeding
plant development
plant type
sesame oil
Sesamum indicum
tocopherol
tocopherols
yield
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Summary:The objective of this study was to improve the ideal type of sesame, by performing pedigree selection applied to segregating generations of crosses of genotypes with contrasting characters. In the segregating F2 population, the progeny were classified into eight types according to the combinations of carpel number per capsule, capsule number per axil and branching habit. Progeny of individual F2 plants including a particular type were advanced to the F6 generation. It was possible to improve the lines with eight types at the end of the selection process. Some types, especially bicarpels, monocapsule, branch (BMB) and bicarpels, tricapsules, branch (BTB), were considered as ideal plant types in breeding for high-yielding varieties. While the low-yielding type quadricarpels, tricapsules, non-branch (QTN) was the highest in oil content (49.3%), the high-yielding type BMB was the lowest (43.2%). Although the QTN-type had the lowest content of oleic acid (41.3%) and the highest content of linoleic acid (43.1%), the bicarpels, monocapsule, non-branch (BMN) type had the highest content of oleic acid (48.4%) and the lowest content of linoleic acid (36.6%). Total tocopherol varied between 175.6 and 368.9 mg/kg in the seed oil of the sesame types. The best high-yielding type BMB was one of the types containing less tocopherol.
ISSN:0179-9541
1439-0523
DOI:10.1111/j.1439-0523.2005.01080.x