Changes in gene expression between a soybean F1 hybrid and its parents are associated with agronomically valuable traits.

摘要: Soybean [Glycine max (L.) Merr.] genetic diversity is limited because domesticated soybean has undergone multiple bottlenecks. Its progenitor, the wild soja Siebold & Zucc], not same intense selection and much more genetically diverse than soybean. However, agronomic importance of in unclear, its weedy nature makes assessment difficult. To address this issue, we chose for study a highly selected, adapted F4-derived progeny soybean, NMS4-44-329. This breeding line derived from hybridization between G. cultivar N7103 PI 366122. Agronomic comparisons were made among N7103, NMS4-44-329 their F1 F2 replicated yield trials at two North Carolina locations. Significant mid-parent heterosis was observed each location seed (189 223 kgha-1, P<0.05 P<0.10, respectively), protein content (1.1g/100g, P<0.01) production per hectare (101 100 P<0.01 P<0.06, respectively). Increased yield, hybrids suggested that potential to improve traits applied breeding. Comparisons differentially-expressed genes hybrid vs. parents identified associated with N metabolism. Non-additive changes gene expression relative could reasonably explain improved levels hybrids. Changes influenced by environmental effects; however, allele specific bias well correlated environments. We propose expression, both additive non-additive, may traits, be valuable tools plant breeders populations.