玉米红白轴单倍体育种选择效应研究

doi:10.16035/j.issn.1001-7283.2017.05.011

摘要/Abstract

摘要：

以11份玉米自交系轴色按白×红或红×白方式组配了8个组合为基础材料,进行本地诱导、海南自然加倍试验。模型拟合度检验结果表明,5份材料单倍体红轴结实株数与白轴结实株数比例符合1∶1模型,3份材料不符合1∶1模型,说明红轴单倍体存在结实性遗传优势效应,红轴显性基因与结实性基因不同程度连锁。相关分析表明,红轴单倍体植株能显著增强结实性。

关键词: 玉米, 红白轴, 单倍体, 选择效应

Abstract:

Eleven maize inbred lines of cob color by white×red or red×white and 8 combinations were used as basic materials to conduct the local induction and natural doubling in Hainan. Model fitting test results showed that 5 materials plant number ratio of seed setting of haploid of red and white cob accorded with the 1:1 model, 3 materials did not comply with the 1:1 model, indicating strong genetic effect of seed setting of haploid red cob, red cob dominant genes and seed setting genes of different degree of linkage. The correlation analysis showed that the red cob haploid plants could significantly enhance the seed setting.

Key words: Maize, Red and white cob, Haploid, Selection effect

李忠南,王越人,邬生辉,曲海涛,许正学,李光发. 玉米红白轴单倍体育种选择效应研究[J]. 作物杂志, 2017 (5): 61–65

Zhongnan Li,Yueren Wang,Shenghui Wu,Haitao Qu,Zhengxue Xu,Guangfa Li. Selection Effects of Haploid Breeding of Red and White Cob in Maize[J]. Crops, 2017(5): 61–65

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参考文献 14

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自交系 Inbred line	穗轴颜色 Cob color	来源Source
通B20 Tong B20	白	吉853×丹340,自育
通852 Tong 852	红	铁7922×掖107,自育
通465 Tong 465	白	铁7922×掖478,自育
通1237 Tong 1237	白	铁7922×掖107,自育
铁C8605-2 Tie C8605-2	红	铁7922×5003,铁岭市农业科学院
PH6WC	白	Reid,外引
PHB1M	红	Lancaster,外引
PH6JM	红	Reid,外引
PH2VK	红	Reid,外引
PH1W2	红	Reid,外引
66号No.66	红	Lancaster,外引

组合 Combination	单倍体株数 Haploid number	散粉株数 Number of pollen shedding plant	散粉率(%) Pollen shedding rate	结实株数 Number of seed setting plant	结实率(%) Seed setting rate	结实株数 Number of seed setting plant		结实率(%) Seed setting rate
组合 Combination	单倍体株数 Haploid number	散粉株数 Number of pollen shedding plant	散粉率(%) Pollen shedding rate	结实株数 Number of seed setting plant	结实率(%) Seed setting rate	白轴 White cob	红轴 Red cob	白轴 White cob	红轴 Red cob
通852×PH6WC	1 729	576	33.3	170	9.8	19	151	1.1	8.7
PH2VK×通1237	2 048	425	20.8	72	3.5	26	46	1.3	2.2
PH6JM×通1237	1 540	314	20.4	68	4.4	35	33	2.3	2.1
PH6JM×通465	1 430	142	9.9	29	2.0	11	18	0.8	1.3
PH6WC×铁C8605-2	2 280	512	22.5	118	5.2	42	76	1.8	3.3
通B20×PHB1M	3 090	208	6.7	48	1.6	24	24	0.8	0.8
通B20×66号	673	54	8.0	8	1.2	4	4	0.6	0.6
PH6WC×PH1W2	438	23	5.3	10	2.3	3	7	0.7	1.6

组合 Combination	Pearson		似然比Likelihood ratio		Williams校正Williams correct
组合 Combination	统计量Chi square statistic	P	统计量Chi square statistic	P	统计量Chi square statistic	P
通852×PH6WC	100.9471	0.0000	116.6058	0.0000	116.2638	0.0000
PH2VK×通1237	5.0139	0.0251	5.6293	0.0177	5.5905	0.0181
PH6JM×通1237	0.0147	0.9035	0.0588	0.8084	0.0584	0.8090
PH6JM×通465	1.2414	0.2652	1.7065	0.1914	1.6775	0.1953
PH6WC×铁C8605-2	9.2288	0.0024	9.9369	0.0016	9.8950	0.0017
通B20×PHB1M	0.0208	0.8852	0.0000	1	0.0000	1
通B20×66号	0.1250	0.7237	0.0000	1	0.0000	1
PH6WC×PH1W2	0.9000	0.3428	1.6457	0.1996	1.5673	0.2106

性状Trait	散粉率 Pollen shedding rate	结实率 Seed setting rate	红轴结实率 Red cob seed setting rate	白轴结实率 White cob seed setting rate
散粉率Pollen shedding rate	1
结实率Seed setting rate	0.9346^**	1
红轴结实率Red cob seed setting rate	0.8666^**	0.9761^**	1
白轴结实率White cob seed setting rate	0.5723	0.4038	0.1961	1