Genetic diversity of bitter vetch (Vicia ervilia) collection of the National Plant Gene Bank of Iran based on agro-morphological traits

Document Type : Research Paper

Authors

1 Seed and Plant Improvement Institute, Karaj

2 Tabriz University, Tabriz, Iran

Abstract

A total of 126 accessions of v. ervilia (bitter vetch) from National Plant Gene Bank of Iran (NPGBI) were planted in the field in the visual design in March 2000. The accessions were evaluated for 42 agro-morphological traits according to descriptors. All of accessions showed the erect growth habit. The most important variation were obtained in the plant height (21 to 80 cm), days to flowering (55 to 88 days with the mean 69.8 days), number of flower per inflorescence (1 to 3), days to seed ripening (93 to 115 with the mean 100) and 1000- seed weight (30 g to 75 g with the mean of 45 g). The average of seed per pod and pod per plant were 3.5 and 55, respectively. Number of seed per plant correlated with pod length and width
(r =0.81, P<0.01), pod shape (r =70, P<0.01) and number of leaflet per leaf (r= -0.33, P<0.01). Factor analysis revealed that 70.4 % of total variance is explained with the first 7 factors. The first factor was affected by traits such as branching pattern, days to flowering, number of flower per inflorescent, days to ripening and growth rate. Whereas the 2nd factor consisted of branching, standard size, standard color intensity and pod number per plant traits. Also distribution of accessions in the provinces based on two first factors in biplot was shown. Cluster analysis in Ward’s method on mean of each quantitative trait per province produced 3 homogeneous clusters. The first cluster included the accessions from Markazi, Lorestan and Kurdestan provinces. The accessions from Ilam, Hamedan and Isfahan were located in the second cluster. And the third cluster consisted of Kerman and East Azarbaijan.

 

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References

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