Analysis of Genetical Diversity of Some of the Tetraploides Potato Cultivars Grown in Iran

Abstract

The genetical diversity of potato, Solanum tuberosum was assessed using morphological traits. To verify, how this diversity is distributed among the main potato varieties grown in Iran. A total of eleven potato varieties, Ramose, Sante, Shepody, Marfona, Maradona, Milova, Santana, Boren, Cosima, Granola and Agria, were evaluated under vivo and situ experimental conditions in Isfahan, conditions, Iran. Seven phenological, floral and morphological vegetative aerial descriptors, Growth Rate = CGR, Net Assimilation Rate = NAR, Leaf Area Duration = LAD, Leaf Area Ratio = LAR and specific Leaf Area = SLA were recorded. The descriptors were evaluated by SAS Software and their means comparison by DMRT test. Certain defined groups were observed, indicating that the diversity of the cultivars are structured with a considerable morphological variation in between the varieties with a very high significant growth indices.

Growth analysis and yield performance of four potato (Solanum tuberosum L.) Varieties

“…It might be interpreted as Granola had the capacity to manufacture higher photosynthates per unit leaf area and Asterix had the lowest capacity for this. The present findings were in agreement with Ranjibar et al (2012) and Esfahai et al (2012), who reported a decreasing pattern of NAR irrespective of potato genotypes. However, the differences of NAR in present findings might be due to genetical difference.…”

“…From this it may be interpreted that variety Granola had early maturing tendency, but the rest three varieties viz., Asterix, Cardinal and Diamant had late maturing tendency as they maintained higher CGR values till the last stage of sample harvest. Similar results were reported by Mahmud (2012) and Esfahai et al (2012). At later stages, CGR value slowed down because of reduction in absorption of solar radiation and leaf falling (Borrego et al, 2000).…”

“…At later stages, CGR value slowed down because of reduction in absorption of solar radiation and leaf falling (Borrego et al, 2000). According to research findings of Esfahai et al (2012), early maturing varieties reached maximum CGR during the early stage compared to the late maturing ones.…”