التفاصيل البيبلوغرافية
| العنوان: |
Flanking SSR markers for alleles involved in the necrosis of hybrids between hexaploid bread wheat and synthetic hexaploid wheat. |
| المؤلفون: |
Kandel, D. R., Glover, K. D., Berzonsky, W. A., Gonzalez-Hernandez, J. L., Ali, S., Chao, S., Bhusal, S. J. |
| المصدر: |
Journal of Crop Improvement; 2017, Vol. 31 Issue 6, p879-892, 14p |
| مصطلحات موضوعية: |
WHEAT varieties, HYBRID systems, BIOMARKERS, PLANTS, NECROSIS, PLANT development |
| مستخلص: |
Hybrid necrosis in wheat (Triticum aestivumL.) is the premature death of leaves or plants caused by the interaction of two dominant complementary genes,Ne1andNe2, located on chromosomes 5B and 2B, respectively. We examined allelic interaction effects of necrosis alleles using simple sequence repeat (SSR) markers in F2populations derived from crossing the cultivar “Alsen” with a synthetic hexaploid “TA4152-37”. The SSR markerXbarc7was linked at a distance of 3 cM to the quantitative trait loci (QTL) located on chromosome 2B, andXgwm639was 11 cM from the 5B QTL. A significant additive by additive epistatic interaction was detected betweenNe1andNe2QTL, and the results suggest that Alsen possesses a moderate necrosis allele,Ne2m; whereas, TA4152-37 possesses a moderate necrosis allele,Ne1m. TheNe2mallele had a stronger effect than theNe1mallele, and a total of 94.6% of phenotypic variance was explained by these genes and their interactions. This demonstrates the strong phenotypic effect due to even moderate necrosis alleles, and emphasizes the need for breeders to accurately predict and identify hybrids that will result in necrosis. [ABSTRACT FROM PUBLISHER] |
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| قاعدة البيانات: |
Complementary Index |
