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Articles by S.C. Li
Total Records ( 2 ) for S.C. Li
  C.X. Chen , S.C. Li , S.Q. Wang , H.N. Liu , Q.M. Deng , A.P. Zheng , J. Zhu , L.X. Wang and P. Li
  The concept of a “core parent” was proposed by breeders to describe elite lines with both good field performance and high potential for breeding superior new lines. Guichao 2 is one of the most important rice core parents in China. In the present study, Simple Sequence Repeat marker (SSR) based genome-wide screening was performed for Guichao 2, its parents and derivatives to study the genetic diversity and structure of them. A total of 348 polymorphic markers and 833 polymorphic alleles were detected. The Polymorphic Information Content (PIC) value ranged from 0.15 to 0.95 and averaged 0.39. Genetic similarity among the ten varieties varied from 0.751 to 0.926 with an average of 0.842, indicating that the genetic diversity is not abundant. At the whole genome level, Chaoyangzao 18 (30.4%) contributed many more genetic components to Guichao 2 than Guiyangai 49 (16.3%) did. The amount of genetic material transmitted by Guichao 2 to its derivatives varied from 49.7% (Qingliuai) to 59.5% (Fengqingai), with an average of 54.7%. In addition, 78 genomic regions of Guichao 2 were identified as stably inherited by these derivatives, with contribution ratios ranging from 14.29 to 85.71%, with an average of 47.25%. Ten of these regions with the same contribution ratio of 85.1% (RM3412-RM140, RM1339-RM1068, RM6997-RM6172, RM3524-RM3042, RM1388-RM1136, RM1353-RM1243, RM5508-RM3753, RM3395-RM3662, RM3662-RM44 and RM6643-RM2915) were found to be significantly important in the derivative cultivars.
  I.F. Huang , S.S. Shy , C.C. Chang , S.C. Li and C.M. Huang
  A 1.5 m long turbulent-wake combustion vessel with a 0.15 m x 0.15 m cross-sectional area is proposed for spatiotemporal measurements of curvature, strain, dilatation and burning rates along a freely downward-propagating premixed flame interacting with a parallel row of staggered vortex pairs having both compression (negative) and extension (positive) strains simultaneously. The wanted wake is generated by rapidly withdrawing an electrically-controlled, horizontally-oriented sliding plate of 5 mm thickness for flame–wake interactions. Both rich and lean CH4/air flames at the equivalence ratios φ = 1.4 and φ = 0.7 with nearly the same laminar burning velocity are studied, where flame–wake interactions and their time-dependent velocity fields are obtained by high-speed, high-resolution DPIV and laser-tomography. Correlations among curvature, strain, stretch, and dilatation rates along wrinkled flame fronts at different times are measured and thus their influences on front propagation rates can be analyzed. It is found that strain-related effects have significant influence on front propagation rates of rich CH4/air (diffusionally stable) flames even when the curvature weights more in the total stretch than the strain rate does. The local propagation rates along the wrinkled flame front are more intense at negative strain rates corresponding to positive peak dilatation rates but the global propagation rate averaged along the rich flame front remains constant during all period of flame–wake interaction. For lean CH4/air (diffusionally unstable) flames, the curvature becomes a dominant parameter influencing the structure and propagation of the wrinkled flame front, where both local and global propagation rates increase significantly with time, showing unsteady flame propagation. These experimental results suggest that the theory of laminar flame stretch can be applicable to a more complex flame–wake interaction involving unsteadiness and multitudinous interactions between vortices.
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