CAJ | 학술논문

利用植物数量性状主基因+多基因混合遗传模型，以玉米杂交组合济533/PH6 WC (组合Ⅰ)、济533/H5818(组合Ⅱ)和2394/ PH6WC (组合Ⅲ)的6个世代(P1、P2、F1、B1、B2、F2)为材料，研究了玉米穗轴粗的遗传规律。结果表明，组合Ⅰ的穗轴粗符合E-5模型，由2对完全显性主基因+加性-显性多基因控制遗传，受主基因和多基因共同影响；组合Ⅱ符合A-4模型，即1对负向完全显性主基因模型，在B1世代的选择效率最高；组合Ⅲ符合D-4模型，受1对负向完全显性主基因+加性-显性多基因控制，在B2世代没有检测到多基因的存在。组合Ⅰ玉米穗轴粗3个分离世代的主基因遗传率分别为6.0%、42.5%、75.0%，多基因遗传率分别为71.4%、37.5%、5.0%。组合Ⅱ玉米穗轴粗3个分离世代的主基因遗传率分别为63.0%、54.6%、54.2%。组合Ⅲ的玉米穗轴粗3个分离世代的主基因遗传率分别为7.0%、40.5%、17.8%，多基因遗传率分别为47.5%、0、50.4%。
이용식물수량성상주기인+다기인혼합유전모형，이옥미잡교조합제533/PH6 WC (조합Ⅰ)、제533/H5818(조합Ⅱ)화2394/ PH6WC (조합Ⅲ)적6개세대(P1、P2、F1、B1、B2、F2)위재료，연구료옥미수축조적유전규률。결과표명，조합Ⅰ적수축조부합E-5모형，유2대완전현성주기인+가성-현성다기인공제유전，수주기인화다기인공동영향；조합Ⅱ부합A-4모형，즉1대부향완전현성주기인모형，재B1세대적선택효솔최고；조합Ⅲ부합D-4모형，수1대부향완전현성주기인+가성-현성다기인공제，재B2세대몰유검측도다기인적존재。조합Ⅰ옥미수축조3개분리세대적주기인유전솔분별위6.0%、42.5%、75.0%，다기인유전솔분별위71.4%、37.5%、5.0%。조합Ⅱ옥미수축조3개분리세대적주기인유전솔분별위63.0%、54.6%、54.2%。조합Ⅲ적옥미수축조3개분리세대적주기인유전솔분별위7.0%、40.5%、17.8%，다기인유전솔분별위47.5%、0、50.4%。
The mixed genetic model of major gene plus polygene for plant quantitative traits was used to investigate the inheritance of cob diameter,taking P1 ,P2 ,B1 ,B2 ,F1 and F2 generations of Ji 533/PH6WC (crossⅠ),Ji 533 / H5818 (crossⅡ) and 2394 / PH6WC (crossⅢ) as experimental material. The re-sults showed that the cob diameter of crossⅠaccorded with E-5 model,controlled by two fully dominant major genes plus additive-dominance polygenes,so it was affected by major gene and polygenes. The opti-mal model of cross Ⅱ was A-4 model,controlled by a pair of negative completely dominant major gene, and the highest selecting efficiency was in B1 generation. CrossⅢaccorded with D-4 model,controlled by a pair of negative completely dominant major gene plus additive-dominance polygenes, but the multiple genes were not detected in B2 generation. For crossⅠ,the major gene heritability of cob diameter in three separating generations was 6. 0%,42. 5% and 75. 0%,respectively,while the polygene heritability was 71. 4%,37. 5% and 5. 0%. For cross Ⅱ,the major gene heritability of cob diameter in three separating generations was 63. 0%,54. 6% and 54. 2%,respectively. For crossⅢ,the major gene heritability of cob diameter in three separating generations was 7. 0%,40. 5% and 17. 8%,respectively,while the polygene heritability was 47. 5%,0 and 50. 4%,respectively.