Herbal
Javad Farrokhi Toolir; Bahman Panahi
Abstract
Background: A study was conducted to initially identify a number of superior walnut genotypes in Kerman province. Methods: Among the walnut genotypes from different regions in Kerman province located at elevations ranging from 2163 to 2867 meters above sea level, 43 genotypes were evaluated for 27 morphological ...
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Background: A study was conducted to initially identify a number of superior walnut genotypes in Kerman province. Methods: Among the walnut genotypes from different regions in Kerman province located at elevations ranging from 2163 to 2867 meters above sea level, 43 genotypes were evaluated for 27 morphological variables over a period of three years (2020 to 2023). The results were evaluated based on descriptive statistics and multivariable analysis; Findings: According to the results of this research, the genetic diversity among genotypes did not follow a geographical distribution pattern. The growth vigor in genotypes 18, 19, and 22 was very strong. The ease of kernel separation was easy or very easy in 34% of genotypes. High yield was reported in 7 genotypes. About 16% of the genotypes were sensitive to late spring frost, while the rest showed medium or low sensitivity. No signs of anthracnose disease were reported among the genotypes. The highest coefficient of variation (CV) belonged to the trait "time of pollen shedding" (77.32%). Principal component analysis (PCA) showed that the first 10 components related to qualitative traits described 75% of the total variation. Based on the dendrogram, 4 distinct groups were created in terms of qualitative traits. Conclusion: Since desirable traits for walnut breeding, such as late leafing, early bearing, and lateral bearing type, are important, it can be said that genotypes 1, 2, 10, and 39 showed positive correlations with all these traits. The results can be used in selecting genotypes for using in future breeding programs
