New Zealand Journal of Crop and Horticultural Science abstracts

Diversity and use of pinto bean (Phaseolus vulgaris) populations from Samsun, Turkey

Ahmet Balkaya
Ahmet Ergün

Department of Horticulture
Faculty of Agriculture
University of Ondokuz Mayis
Samsun, Turkey
email: abalkaya@omu.edu.tr

Abstract In thenorth of Turkey, pinto bean (Phaseolus vulgaris) is one of the most important crops. Forty-four analysed populations of pinto bean were collected from Samsun province in northern Turkey. The variability of the 44 self-pollinated populations of pinto bean was evaluated on morphological, reproductive, and agronomical traits during 2003–2004. Individual data for 24 traits (14 quantitative and 10 qualitative) related to earliness and yield, and plant, pod, and seed structure were analysed using Principal Component (PC) analysis which revealed differences among the populations. The PC analysis showed that the first four PC axes explained 83.3% of the total multivariate variation. Characters with high coefficients in the first PC (earliness and yield traits), and the second PC (pod length, pod width, and pod form) were considered the most important since these axes explain nearly half of the total variation. Data were subjected to cluster analysis and several groups were identified with most of the populations. Clustered into six groups, a dendrogram was prepared to evaluate morphological differences among populations. It revealed high variation. The results provide information on the diversity and breeding values of Turkish pinto bean germplasm.

Keywords pinto bean; genetic resources; variability; cluster; Turkey

New Zealand Journal of Crop and Horticultural Science, 2008, Vol. 36: 189–197
0014–0671/08/3603–0189 © The Royal Society of New Zealand 2008
H07119; Online publication date 11 August 2008
Received 12 November 2007; accepted 5 May 2008

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