首页|玉米 Mo17及其改良系单株产量遗传研究

玉米 Mo17及其改良系单株产量遗传研究

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以生产上常用的Lancaster类群的5个自交系为母本、其他类群骨干自交系为父本，采用增广NCⅡ设计，对Mo17及其改良系进行遗传研究。杂种优势分析结果表明：30个杂交组合优势率变化范围55.65％～175.63％，其中，中早熟自交系哲917×旅大红骨类群晚熟自交系丹8415最高，达175.63％，晚熟自交系J1782×塘四平头类群中熟自交系四-444最低，为55.65％。配合力分析结果表明：母本中晚熟类型自交系吉1037（5.22）和Mo17（2.79）单株产量的一般配合力较高，中早熟类型自交系合344（-3.00）和哲917（-4.97）的一般配合力较低。30个杂交组合中，共有17个组合的特殊配合力为正值，其中J1782×吉853（11.90）的特殊配合力效应值最高。分析表明，Mo17及其改良系与塘四平头中晚熟类型、中熟类型及旅大红骨晚熟类型自交系杂交，更有利于组配出单株产量较高的杂交种；遗传模型测验结果表明：单株产量的遗传符合加-显-上位性遗传模型，为部分显性遗传。
Genetic Studies on Yield Per Plant of Mo17 and Its Improvedlines
Crosses were performed between 5 female parents from inbred lines of Lancaster groups ,and male plants from inbred lines of other groups using augmented NC Ⅱdesign to study the inheritance of yield per plant of Mo17 and its improved-lines .The results showed that the average heterosis of 30 cross combinations varied from 55.65% to 175.63% ,the highest superiority of the inbred was the early type inbred lines Zhe 917 × Dan 8415 (175.63% ) ,and the lowest superiority of the inbred was the late type inbred lines J1782 × Si -444 (55.65% ) . Combining ability analysis showed that the late type inbred lines Ji1037 (5.22 ) and Mo17 (2.79 ) had higher general combining ability of yield per plant in females , but the early type inbred lines He 344 (-3.00 ) and Zhe 917 (-4.97 ) had lower general combining a-bility . In 30 cross combinations , specific combining ability of 17 was positive , and J1782 × Ji853 (11.90 )had the highest specific combining ability effect value .The analysis showed that hybridization of Mo17 and its improvedlines with tangsipingtou and lvdahonggu inbred lines was more beneficial to hybrids of high yield per plant .The genetic model test showed that the inheritance of yield per plant of maize was consistent with additive-dominance-epistatic genetic model and it was partially dominant .

maizecombining abilityyield per plantinheritance

张野、孙贵星、杨巍、慈佳宾、崔学宇、任雪娇、杨伟光

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吉林农业大学农学院，长春130118

玉米 配合力 单株产量 遗传

国家“863”项目吉林省现代产业技术体系建设项目“十二五”农村领域国家科技计划课题国家科技计划项目农业部“948”项目吉林省科技发展计划项目吉林省财政厅育种项目吉林省农委农业新品种研发项目

2011AA10A10320130001j-12011BAD35B012011BAD35B012011-G1-212011603020110320120002

2014

10.13327/j.jjlau.2014.1820

吉林农业大学学报
吉林农业大学

吉林农业大学学报

CSTPCDCSCD北大核心
影响因子：1.014
ISSN：1000-5684
年,卷(期)：2014.(3)
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