Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars
Determination of germplasm diversity and genetic relationships among breeding materials is an invaluable aid in crop improvement strategies. This study assessed the breeding value of tomato source material. Two commercial hybrids along with an experimental hybrid and four cultivars were assessed wit...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
|
| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2011/697879 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832568197730009088 |
|---|---|
| author | G. Evgenidis E. Traka-Mavrona M. Koutsika-Sotiriou |
| author_facet | G. Evgenidis E. Traka-Mavrona M. Koutsika-Sotiriou |
| author_sort | G. Evgenidis |
| collection | DOAJ |
| description | Determination of germplasm diversity and genetic relationships among breeding materials is an invaluable aid in crop improvement strategies. This study assessed the breeding value of tomato source material. Two commercial hybrids along with an experimental hybrid and four cultivars were assessed with cluster and principal component analyses based on morphophysiological data, yield and quality, stability of performance, heterosis, and combining abilities. The assessment of commercial hybrids revealed a related origin and subsequently does not support the identification of promising offspring in their crossing. The assessment of the cultivars discriminated them according to origin and evolutionary and selection effects. On the Principal Component 1, the largest group with positive loading included, yield components, heterosis, general and specific combining ability, whereas the largest negative loading was obtained by qualitative and descriptive traits. The Principal Component 2 revealed two smaller groups, a positive one with phenotypic traits and a negative one with tolerance to inbreeding. Stability of performance was loaded positively and/or negatively. In conclusion, combing ability, yield components, and heterosis provided a mechanism for ensuring continued improvement in plant selection programs. |
| format | Article |
| id | doaj-art-110e7b23df4d4300a179f2fa68a34eec |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-110e7b23df4d4300a179f2fa68a34eec2025-02-03T00:59:33ZengWileyInternational Journal of Agronomy1687-81591687-81672011-01-01201110.1155/2011/697879697879Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and CultivarsG. Evgenidis0E. Traka-Mavrona1M. Koutsika-Sotiriou2National Agricultural Research Foundation, 570 01 Thermi, Thessaloniki, GreeceNational Agricultural Research Foundation, 570 01 Thermi, Thessaloniki, GreeceGenetics and Plant Breeding Department of AUTH, 541 24 Thessaloniki, GreeceDetermination of germplasm diversity and genetic relationships among breeding materials is an invaluable aid in crop improvement strategies. This study assessed the breeding value of tomato source material. Two commercial hybrids along with an experimental hybrid and four cultivars were assessed with cluster and principal component analyses based on morphophysiological data, yield and quality, stability of performance, heterosis, and combining abilities. The assessment of commercial hybrids revealed a related origin and subsequently does not support the identification of promising offspring in their crossing. The assessment of the cultivars discriminated them according to origin and evolutionary and selection effects. On the Principal Component 1, the largest group with positive loading included, yield components, heterosis, general and specific combining ability, whereas the largest negative loading was obtained by qualitative and descriptive traits. The Principal Component 2 revealed two smaller groups, a positive one with phenotypic traits and a negative one with tolerance to inbreeding. Stability of performance was loaded positively and/or negatively. In conclusion, combing ability, yield components, and heterosis provided a mechanism for ensuring continued improvement in plant selection programs.http://dx.doi.org/10.1155/2011/697879 |
| spellingShingle | G. Evgenidis E. Traka-Mavrona M. Koutsika-Sotiriou Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars International Journal of Agronomy |
| title | Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars |
| title_full | Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars |
| title_fullStr | Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars |
| title_full_unstemmed | Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars |
| title_short | Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars |
| title_sort | principal component and cluster analysis as a tool in the assessment of tomato hybrids and cultivars |
| url | http://dx.doi.org/10.1155/2011/697879 |
| work_keys_str_mv | AT gevgenidis principalcomponentandclusteranalysisasatoolintheassessmentoftomatohybridsandcultivars AT etrakamavrona principalcomponentandclusteranalysisasatoolintheassessmentoftomatohybridsandcultivars AT mkoutsikasotiriou principalcomponentandclusteranalysisasatoolintheassessmentoftomatohybridsandcultivars |