Determining rnelationships among plant and tuber components in potato (Solanum tuberosum L.) transplants

Bu araştırmada, üç patates çeşidinde (Concore, Marabel ve Velox) tohum yatağında yetiştirilen (150 transplant $m^{-2}$ ) transplantların karakter özellikleri ve bitki ve yumru komponentlerinin korelasyon ve path analizi çalışılmıştır. Yaprakcık sayısı, sap sayısı ve internod uzunluğu hariç diğer tüm karakterlerde çeşitler arasında istatistiki olarak önemli farklılıklar bulunmuştur. Yumru verimi ile bitki boyu, boğum sayısı, yaprakcık sayısı, yaprakcık uzunluğu ve genişliği, yumru sayısı ve ortalama yumru ağırlığı arasında önemli pozitif korelasyonlar bulunmuştur. Yumru sayısı ve ortalama yumru ağırlığı gibi özellikler yumru verimi ile hem yüksek korelasyon göstermiş, hem de path analizi sonucu en büyük doğrudan etkilere sahip olmuşlardır. Yumru verimi artışı sağlamak için yumru sayısı ve ortalama yumru ağırlığı bakımından yapılacak doğrudan seleksiyon başarılı olabilir.

Patates (Solanum tuberosum L.) transplantlarında bitki ve yumru komponentleri arasındaki ilişkilerin belirlenmesi

Character association, correlation and path analysis of three potato cultivars (Concorde, Marabel and Velox) for plant and tuber components of transplants in seed bed performance (150 transplant $m^{-2}$ ) were studied. Statistically significant differences were found among cultivars for all the characters, except number of leaflets, number of stems and internode length. Significant positive correlations were found between tuber yield and plant height, number of nodes, number of leaflets, leaflet length, leaflet width, number of tubers and average tuber weight. Path analysis of the yield characters such as number of tubers and average tuber weight revealed that the components showing high correlations with tuber yield also had the largest direct effects on tuber yield. This may indicate that especially the direct selection for number of tubers and average tuber weight would likely be effective in increasing tuber yield.

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