CAJ | 학술논문

以6个对黄曲霉菌抗性不同的玉米自交系完全双列杂交所获得的6个世代的种子,用黄曲霉菌接种,调查病级,研究玉米抗黄曲霉菌的基因位点及效应.结果表明:参试的6个亲本自交系之间对黄曲霉菌的抗性有较大差异,不同亲本组配的杂种F1对黄曲霉菌的抗感表现不同.各家系的分离群体中抗感个体的分离,少部分呈有规律的分离比例,而大部分组合的分离群体不呈有规律的分离比例,说明玉米对黄曲霉菌的抗性遗传既有主基因效应,也有多基因效应.多基因遗传体系中,既有基因的加性效应、显性效应,还有上位性效应.6个自交系中,可检测到5个对黄曲霉菌有抗性的基因位点,在自交系RA中携带1个效应较大的抗性基因,而其他几个自交系仅携带1～2个效应较小的抗性基因.自交系RA除可用于抗黄曲霉菌玉米新品种的选育,也可用于发展作图群体对玉米抗黄曲霉菌基因进行定位.
이6개대황곡매균항성불동적옥미자교계완전쌍렬잡교소획득적6개세대적충자,용황곡매균접충,조사병급,연구옥미항황곡매균적기인위점급효응.결과표명:삼시적6개친본자교계지간대황곡매균적항성유교대차이,불동친본조배적잡충F1대황곡매균적항감표현불동.각가계적분리군체중항감개체적분리,소부분정유규률적분리비례,이대부분조합적분리군체불정유규률적분리비례,설명옥미대황곡매균적항성유전기유주기인효응,야유다기인효응.다기인유전체계중,기유기인적가성효응、현성효응,환유상위성효응.6개자교계중,가검측도5개대황곡매균유항성적기인위점,재자교계RA중휴대1개효응교대적항성기인,이기타궤개자교계부휴대1～2개효응교소적항성기인.자교계RA제가용우항황곡매균옥미신품충적선육,야가용우발전작도군체대옥미항황곡매균기인진행정위.
This study was carried out with 6 inbred lines with different resistance to Aspergillus flavus in maize and their F_1 progeny complete diallel crosses inoculated with A.flavus,the number and effect of genes contributing resistance to A.flavus were investigated and the disease categorical data of 6 generations of each cross were analyzed.Result showed that 6 inbred lines and their F_1 progeny had different resistance to A.flavus.In diallel crosses,the ratio of resistant and susceptible individuals did not always follow the law.Both major gene and polygene effect contributed the resistance to A.flavus in maize.Additive effect as well as dominance and epitasis effects were detected in crosses.It may be safely concluded that the inheritance of A.flavus resistance was complex.Totally,five resistant loci were detected in 6 inbred lines.Moreovcr,the effect of resistant loci was different in crosses.Of all,inbred line named RA had a major resistant locus,while others had one or two resistant loci with minor resistant effect.Inbred line RA iS the most promising resources of resistance for breeding programs and mapping population development.