Summer Maize CM07 in the Areas of Huang-Huai-Hai: Heterotic Pattern and Utilization

doi:10.11924/j.issn.1000-6850.casb20200200096

Abstract

Abstract:

To evaluate the utilization model of the tropical improved germplasm in the corn ecological area in Huang-Huai-Hai, and the interrelationships among yield component traits, F₁ of CM07 hybridization with different female-parents were studied. With the variance analysis and correlation analysis, the differences among yield component traits and the differences between correlations with heterotic pattern were measured. The results showed that the differences between different treatments were extremely significant, the yield component traits of T2 were the best, the plot yield was 15.17 kg, showing that Zheng 58 ×CM07 had the strongest special combining ability. The maximum coefficient of variation of bald tip length was 180.47, indicating that bald tip length was controlled by multiple genes. The relationship between the yield and various yield components were ranked as ear length > kernels per row > ear diameter > 100-kernel weight > rows per ear > moisture content > bald tip length, and the correlation between ear length, kernels per row and yield was extremely significant and positive, and the correlation between the bald tip length and yield was significantly negative. The best heterotic pattern of CM07 was P series × CM07, which was significantly correlated compared with other patterns, followed by Reid ×CM07, and Luda × CM07 was the worst. We should pay attention to the effect of bald tip length on yield when we utilize the tropical improved germplasm CM07, which can provide a theoretical basis for the heterotic pattern utilization of CM07 in the Huang-Huai-Hai summer maize area.

Key words: Huang-Huai-Hai region, maize, yield, germplasm, heterotic pattern

CLC Number:

S513

Zhang Yan, Wang Minqian, Sun Xiyun, Guo Suya. Summer Maize CM07 in the Areas of Huang-Huai-Hai: Heterotic Pattern and Utilization[J]. Chinese Agricultural Science Bulletin, 2020, 36(21): 6-10.

Figures/Tables 4

References 26

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处理	组合	杂交模式	处理	组合	杂交模式
T1	478×CM07	瑞德×黄改	T5	丹598×CM07	旅大×黄改
T2	郑58×CM07	瑞德×黄改	T6	PH6WC×CM07	P系×黄改
T3	9058×CM07	瑞德×黄改	T7	PH4CV×CM07	P系×黄改
T4	丹340×CM07	旅大×黄改	T8	HCL645×CM07	P系×黄改

处理	组合	杂交模式	处理	组合	杂交模式
T1	478×CM07	瑞德×黄改	T5	丹598×CM07	旅大×黄改
T2	郑58×CM07	瑞德×黄改	T6	PH6WC×CM07	P系×黄改
T3	9058×CM07	瑞德×黄改	T7	PH4CV×CM07	P系×黄改
T4	丹340×CM07	旅大×黄改	T8	HCL645×CM07	P系×黄改

处理	穗长/cm	穗粗/cm	秃尖长/cm	穗行数	行粒数	百粒重/%	含水量/%	小区产量/kg
T1	21.42d DE	4.52bc B	3.52b B	15.30c B	29.03c C	32.27g G	25.68d C	13.34c BC
T2	25.47a A	5.23a A	0.52f E	15.90b A	32.28a A	39.35a A	21.92e D	15.17a A
T3	22.33c CD	4.62b B	3.27b B	15.40c B	29.30c C	34.28e E	26.32cd C	12.52de CD
T4	20.37f F	4.37c B	4.22a A	16.03ab A	22.15e E	33.28f F	30.43a A	12.46de CD
T5	20.62ef EF	4.42bc B	1.92c C	14.53d C	21.45f E	35.82d D	27.97bc BC	12.02e D
T6	22.40c C	5.15a A	0.88e DE	15.53c B	31.20b B	38.02b B	26.43cd C	14.63ab A
T7	21.23de EF	4.60b B	4.32a A	16.13ab A	27.87d D	33.37f F	27.37bcd BC	13.02cd C
T8	23.50b B	4.50bc B	1.30d D	16.17a A	31.00b B	37.27c C	28.78b AB	14.33b AB
变异系数/%	23.83	24.37	180.47	11.03	42.83	21.06	31.89	28.05

处理	穗长/cm	穗粗/cm	秃尖长/cm	穗行数	行粒数	百粒重/%	含水量/%	小区产量/kg
T1	21.42d DE	4.52bc B	3.52b B	15.30c B	29.03c C	32.27g G	25.68d C	13.34c BC
T2	25.47a A	5.23a A	0.52f E	15.90b A	32.28a A	39.35a A	21.92e D	15.17a A
T3	22.33c CD	4.62b B	3.27b B	15.40c B	29.30c C	34.28e E	26.32cd C	12.52de CD
T4	20.37f F	4.37c B	4.22a A	16.03ab A	22.15e E	33.28f F	30.43a A	12.46de CD
T5	20.62ef EF	4.42bc B	1.92c C	14.53d C	21.45f E	35.82d D	27.97bc BC	12.02e D
T6	22.40c C	5.15a A	0.88e DE	15.53c B	31.20b B	38.02b B	26.43cd C	14.63ab A
T7	21.23de EF	4.60b B	4.32a A	16.13ab A	27.87d D	33.37f F	27.37bcd BC	13.02cd C
T8	23.50b B	4.50bc B	1.30d D	16.17a A	31.00b B	37.27c C	28.78b AB	14.33b AB
变异系数/%	23.83	24.37	180.47	11.03	42.83	21.06	31.89	28.05

相关性		穗长	穗粗	秃尖长	穗行数	行粒数	百粒重	含水量
穗粗	皮尔逊相关性	0.732*
穗粗	显著性	0.039
秃尖长	皮尔逊相关性	-0.728*	-0.678
秃尖长	显著性	0.041	0.065
穗行数	皮尔逊相关性	0.354	0.151	0.119
穗行数	显著性	0.390	0.721	0.780
行粒数	皮尔逊相关性	0.810*	0.701	-0.497	0.416
行粒数	显著性	0.015	0.053	0.210	0.305
百粒重	皮尔逊相关性	0.776*	0.739*	-0.952**	0.079	0.493
百粒重	显著性	0.024	0.036	0.000	0.853	0.215
含水量	皮尔逊相关性	-0.732*	-0.775*	0.485	0.074	-0.651	-0.464
含水量	显著性	0.039	0.024	0.224	0.862	0.080	0.246
小区产量	皮尔逊相关性	0.848**	0.807*	-0.725*	0.456	0.841**	0.745*	-0.596
小区产量	显著性	0.008	0.015	0.042	0.256	0.009	0.034	0.119