CAJ | 학술논문

为了进一步利用和改良热带玉米自交系 QR273，选用4个具有 Suwan 血缘的优良自交系QB572、QB576、QB48和 T32作为供体，QR273作为受体进行改良，对改良系农艺性状进行统计分析。结果表明：选育的30个改良系之间农艺性状差异均达显著水平，遗传变异丰富；以 QB48和 QB576作为供体改良系的穗长、穗粗、株高、穗位高和吐丝期比 QR273得到明显的改良；经改良系与 QB506组配的杂交组合鉴定，增产最多是 QB2201，比对照增加9．91％；其次是 QB1704（6．23％）、QB2157（3．20％）、QB2159（3．13％）、QB2178（1．84％）和 QB1775（0．63％）。
위료진일보이용화개량열대옥미자교계 QR273，선용4개구유 Suwan 혈연적우량자교계QB572、QB576、QB48화 T32작위공체，QR273작위수체진행개량，대개량계농예성상진행통계분석。결과표명：선육적30개개량계지간농예성상차이균체현저수평，유전변이봉부；이 QB48화 QB576작위공체개량계적수장、수조、주고、수위고화토사기비 QR273득도명현적개량；경개량계여 QB506조배적잡교조합감정，증산최다시 QB2201，비대조증가9．91％；기차시 QB1704（6．23％）、QB2157（3．20％）、QB2159（3．13％）、QB2178（1．84％）화 QB1775（0．63％）。
Four maize inbred lines QB572,QB576,QB48 and T32,derived from Suwan,were used as donor to improve QR273 in the present study, statistical analysis of eight agronomic traits showed significant difference with rich genetic variations among the 30 improved lines.While the improved lines with QB48 and QB576 as the donors had significant improvement effects on ear length,ear diameter,plant height,ear height and silking stage,compared with QR273.In addition,the results of hybrid combination of improved lines crosses with QB506 for multi-location-one-year experiments showed that the yield of six combinations exceeded CK,especially QB2201,increased up to 9.91%,followed by QB1704(6.23%), QB2157(3.20%),QB2159(3.13%),QB2178(1.84%)and QB1775(0.63%).