CAJ | 학술논문

选用穗位叶面积有显著差异的超甜玉米（Zea mays L.)自交系T4和T19为亲本配制杂交组合，以232个单株的F2群体为作图群体，构建了一张包含77个位点全长868.7 cM的玉米SSR标记遗传连锁图谱，标记间的平均间距为11.28 cM。在F2群体中用复合区间作图法在玉米全基因组上检测穗位叶面积QTL，共检测到4个与甜玉米穗位叶面积相关QTL，分别位于玉米第4、5、9染色体上，可解释5.98%~11.12%的表型变异。这一结果将加快高产、耐密和抗倒伏甜玉米育种进程，实现玉米的分子标记辅助选择育种。
선용수위협면적유현저차이적초첨옥미（Zea mays L.)자교계T4화T19위친본배제잡교조합，이232개단주적F2군체위작도군체，구건료일장포함77개위점전장868.7 cM적옥미SSR표기유전련쇄도보，표기간적평균간거위11.28 cM。재F2군체중용복합구간작도법재옥미전기인조상검측수위협면적QTL，공검측도4개여첨옥미수위협면적상관QTL，분별위우옥미제4、5、9염색체상，가해석5.98%~11.12%적표형변이。저일결과장가쾌고산、내밀화항도복첨옥미육충진정，실현옥미적분자표기보조선택육충。
Cross was made between two sweet corn inbreds (T19 and T4﹚ significantly different in ELA (ear leaf area﹚. A genetic linkage map of 868.7 cM length was constructed with 77 SSR markers based on a sweet corn population consisting of 232 F2 individuals from the cross T4×T19, with an average interval length of 11.28 cM. 4 QTLs of ELA on chromosome 4, 5 and 9 were detected with composite interval mapping (CIM﹚. The phenotypic variance explained by each QTL was ranged from 5.98% to 11.12%. The QTL of ELA from this study may improve the breeding of high yield, density and realized lodging resistance and molecular marker-assisted selection(MAS of ELA﹚.