Evaluation of Iranian Oilseed Rape Germplasm Collection

Öz

With the aim of evaluation and characterization of important agronomical, morphological and qualitative traits of canola germplasm, 14 and 30 accessions of canola were planted in two separate randomized complete block designs with 3 and 2 replications respectively, at the Seed and Plant Improvement Institute (SPII), Karaj-Iran during 2006-2007. For both experiments, all important agronomical and phenological traits including number of days to flowering initiation, number of days to end flowering, number of branches/plant, plant height, number of grain/pod, number of pods on main stem, number of pods on plant, main pod length, secondary pod length and maturity time were recorded during growth period. At ripening, biological and grain yield, harvest index, 1000 grains weight, oil content and oil yield for each genotype were calculated. Based on the analysis of variance and means comparison results the genotypes had highly significant differences in most of the studied traits. Classification of genotypes using Ward’s minimum variance method based on squared Euclidean distance measure resulted in five separate and distinct groups which could be clearly distinguished based on some traits. It could be concluded that there is a broad genetic diversity in the germplasm collection of rapeseed which could be utilized in breeding programs.

Anahtar Kelimeler

• canola, genetic diversity, germplasm collection, morphological traits

Kaynakça

1. [1] Aien A. 2007. Study on yield potential of advanced rapeseed varieties in Jiroft area. Pajouhesh & Sazandegi 77: 119-124 (In Persian with English abstract).
2. [2] Cruz V M V, Luhman R, Marek L F, Rife C L, Shoemaker R C, Brummer E C, and Gardner C A C. 2007. Characterization of flowering time and SSR marker analysis of spring and winter type Brassica napus L. germplasm. Euphytica, 153: 43-57.
3. [3] Diers B W and Osborn T C. 1994. Genetic diversity of oilseed Brassica napus germplasm based on restriction fragment length polymorphisms. Theor. Applied Genet. 88: 662-668.
4. [4] Hallden C, Nilsson N O, Rading I M, and Soll T. 1994. Evaluation of RFLP and RAPD markers in a comparison of Brassica napus breeding lines. Theor. Applied Genet. 88: 123-128.
5. [5] Fanaei H R, Ghanbari A, Akbarimoghadam H, Galavi M, and Naruoyrad M R. 2010. Assessment of the yield, yield components and some agronomic traits of rapeseed Spring genotypes in Sistan region. Pajouhesh & Sazandegi 79: 36-44 (In Persian with English abstract).
6. [6] FAO. 2011. FAOSTAT, available on line from URL: http://faostat.fao.org/faostat/form/collection=Production.
7. [7] Gangapur D R. 2008. Studies on genetic variability in the Indian mustard (B. juncea L. Czern and Coss) germplasm and its suitability to northern Karnataka. Master of Science (Agriculture) Thesis. Department Of Genetics And Plant Breeding, College Of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad, India.
8. [8] Heal G, Walker B, Levin S, Arrowg K, Dasgupta P, Daily G, Ehrlich P, Maler K G, Kautsky N, Lubchenco J, Schneider S, and Starrett D. 2004. Genetic diversity and interdependent crop choices in agriculture. Resource and Energy Economics 26: 175–184.

9. [9] Jordan D R, Tao Y Z, Godwin I D, Henzell R G, Cooper M, and McIntyre C L. 1998. Loss of genetic diversity associated with selection for resistance to sorghum midge in Australian sorghum. Euphytica, 102: 1- 7.
10. [10] Kresovich S, Williams JGK, McFerson J R, Routman E J, and Schaal B A. 1992. Characterization of genetic identities and relationships of Brassica oleraceae L. via a random amplified polymorphic DNA assay. Theor. Applied Genet. 85: 190-196.
11. [11] Rashidifar J, Dehghani H, Alizadeh B, and Khodadadi M. 2010. Classification of some winter rapeseed cultivars using cluster analysis and discriminant function analysis. 11th Iranian Congress of Agronomy and Plant Breeding Sciences. 24-26 July 2010. Institute of Environmental Sciences, Shahid Beheshti University, Tehran.
12. [12] Romesburg C. 2004. Cluster Analysis for Researchers. Lulu Press, North Carolina, USA.
13. [13] Steel R G D, and Torrie J H. 1981. Principles and procedures of statistics. A biometrical approach. McGraw-Hill. London. UK.
14. [14] Wisal, M., Khan, Iqbal Munir, Farhatullah, M. Arif, Aqib Iqbal, Ijaz Ali, Dawood Ahmad, Mushtaq Ahmad, Afaq Mian, Jehan Bakht, Inamullah and Zahoor A. Sawti, 2011. Assessment of Genetic Diversity of Brassica junicea Germplasm Using Randomly Amplified Polymorphic DNA (RAPD) Markers, African Journal of Biotechnology Vol. 10(19), pp. 3654-3658.