Volume 9, Issue 24 (3-2018)                   jcb 2018, 9(24): 112-118 | Back to browse issues page

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Mahmudi S B, Abbasi Z. Evaluation Combining Ability of Sugar Beet Breeding Lines for Qualitative and Quantitative Traits and Resistant to Rhizomania Disease. jcb. 2018; 9 (24) :112-118
URL: http://jcb.sanru.ac.ir/article-1-943-en.html
Abstract:   (450 Views)
The most important step in developing of a sugar beet hybrid for target trait is selection of CMS line or single cross. In the present study, 12 progenies derived of 4 sugar beet lines(as female parent) with different level of rhizomania resistant, along with 3 pollinators 27270, 27273 and 27274(as male parent) and parents were evaluated in two locations (Mashhad and Shiraz) with rhizomania infestation in 5×5 latice design with 4 replications. The traits consisted of: Root yield (RY), sugar yield (SY), sugar content (SC), Na, K, N- , white sugar content (WSC), purity (PUR) and molas percent (MS). The data analyzed as factorial model in randomized complete block design. The results of genetic analyses in two locations showed significant differences among parents for all the traits except for K and N- . Variance of hybrid was significant for RY and SY. In Mashhad experiment L3 line and T3 pollinator and in Shiraz experiment L3 and L1 lines and T3 pollinator were selected as superior parents for RY, SY and N- traits. The value of SCA showed that in Mashhad experiment L1×T3, L2×T2, L3×T1 and L4×T1 crosses and in Shiraz experiment L1×T1, L2×T3 and L1×T3 had significant and positive value of SCA for RY and SY. As a total, the results showed that cross between a rhizomania susceptible single cross (L1) with a resistant pollinator (T3) was the best sugar beet hybrid among them.
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