CAJ | 학술논문

采用完全双列杂交 Griffing方法Ⅰ，分析了不同双亲耐旱性组合类型对后代耐旱性的影响及其亲本间耐旱性的一般配合力、特殊配合力和反交效应，同时对耐旱性主要遗传参数进行了分析。结果表明，玉米耐旱性的GCA效应存在显著差异，SCA效应存在极显著差异，R效应的差异不显著，6个亲本之间的耐旱性存在明显的差异，其中郑58耐旱性最强，PH4CV最差。用郑58、吉853、新自8717做耐旱亲本改良对后代耐旱性提高具有增益优势。基因的加性效应对后代耐旱性的提高因亲本和组合而异。因此，耐旱性遗传基因的表达，仅仅取决于加性效应和非加性效应，而与反交效应关系较小，玉米耐旱性的选择宜在高代进行。
채용완전쌍렬잡교 Griffing방법Ⅰ，분석료불동쌍친내한성조합류형대후대내한성적영향급기친본간내한성적일반배합력、특수배합력화반교효응，동시대내한성주요유전삼수진행료분석。결과표명，옥미내한성적GCA효응존재현저차이，SCA효응존재겁현저차이，R효응적차이불현저，6개친본지간적내한성존재명현적차이，기중정58내한성최강，PH4CV최차。용정58、길853、신자8717주내한친본개량대후대내한성제고구유증익우세。기인적가성효응대후대내한성적제고인친본화조합이이。인차，내한성유전기인적표체，부부취결우가성효응화비가성효응，이여반교효응관계교소，옥미내한성적선택의재고대진행。
By using complete-dial el cross design (Griffing method I), the influence of the combination of different high-yield genotypes of maize on the drought tolerance of their offspring, the general combining ability, the specific combining ability and the back cross effect of drought tolerance between parents and the main genetic param-eters for drought tolerance were analyzed. The result indicated that there were sig-nificant differences in general combining ability effects (GCA) of maize; there were highly significant differences in special combining ability effects (SCA); there was no significant difference in reciprocal effects (R). There were apparent differences in drought tolerance among six parents; to be specific, Zheng 58 had the highest drought tolerance, while PH4CV had the lowest. Improving drought-tolerant parents with Zheng 58, Ji 853 and Xinzi 8717 had gain superiority effects on the increase of drought tolerance in offspring. The influence of the genetic additive effect on the drought tolerance of offsprings varied with different parents and combinations. There-fore, the expression of drought tolerance inheritance genes was determined only by the additive and non-additive genetic effects but had little relationship with reciprocal effects. The selection of drought tolerance of maize should be conducted at higher generations.