Xinjiang Agricultural Sciences ›› 2023, Vol. 60 ›› Issue (12): 2949-2961.DOI: 10.6048/j.issn.1001-4330.2023.12.011
• Crop Genetics and Breeding·Germplasm Resources·Molecular Genetics·Soil Fertilizer • Previous Articles Next Articles
DUAN Yanyan(), HU Jing, QI Bingqin, PAN Zhiyuan, WU Haonan, GOU Ling()
Received:
2023-03-30
Online:
2023-12-20
Published:
2024-01-03
Correspondence author:
GOU Ling(1966-), female, born in Sichuan, Ph.D, doctoral supervisor, research direction: physiology of high-yielding and stress-resistant crop cultivation, (E-mail)Supported by:
段燕燕(), 胡静, 祁炳琴, 潘志远, 吴昊楠, 勾玲()
通讯作者:
勾玲(1966-),女,四川涪陵人,教授,博士,硕士生/博士生导师,研究方向为作物高产抗逆栽培生理,(E-mail)gl_agr@shzu.edu.cn
作者简介:
段燕燕(1996-),女,甘肃武威人,硕士研究生,研究方向为作物高产优质高效栽培,(E-mail)3256696993@qq.com
基金资助:
CLC Number:
DUAN Yanyan, HU Jing, QI Bingqin, PAN Zhiyuan, WU Haonan, GOU Ling. Response of reciprocal cross to lodging resistance and planting density of maize hybrids[J]. Xinjiang Agricultural Sciences, 2023, 60(12): 2949-2961.
段燕燕, 胡静, 祁炳琴, 潘志远, 吴昊楠, 勾玲. 正反交对玉米杂交种茎秆抗倒伏性能及种植密度的响应[J]. 新疆农业科学, 2023, 60(12): 2949-2961.
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年份 Year | 类型 Type | 杂交种 Hybrid | 母本 Female parent | 父本 Male parent |
---|---|---|---|---|
2020 | 正交 | KX2564 | KW4M029 | KW7M031 |
KX3564 | KW4M029 | KW7M14 | ||
2021 | 正交 | KX2564 | KW4M029 | KW7M031 |
KX3564 | KW4M029 | KW7M14 | ||
反交 | 反-KX2564 | KW7M031 | KW4M029 | |
反-KX3564 | KW7M14 | KW4M029 |
Tab.1 Test materials
年份 Year | 类型 Type | 杂交种 Hybrid | 母本 Female parent | 父本 Male parent |
---|---|---|---|---|
2020 | 正交 | KX2564 | KW4M029 | KW7M031 |
KX3564 | KW4M029 | KW7M14 | ||
2021 | 正交 | KX2564 | KW4M029 | KW7M031 |
KX3564 | KW4M029 | KW7M14 | ||
反交 | 反-KX2564 | KW7M031 | KW4M029 | |
反-KX3564 | KW7M14 | KW4M029 |
Fig.2 Comparison of internode length between maize hybrids and their parents inbred lines Note: M and F represent the same female parent and male parent, and different lowercase letters represent significant differences between varieties in the same year at the level of 0.05, the same as below
类型 Type | 密度 Density | 杂交种 Hybrid | 节长Internode length | 节粗Internode diameter | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | 超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | |||||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | 10.1 | 56.2 | -4.3 | 35.7 | 102.4 | 145.2 | 0.8 | -0.9 | 13.2 | 10.1 | 106.6 | 104.3 |
KX3564 | -5.7 | 44.5 | -3.1 | 51.8 | 95.6 | 148.1 | 2.4 | -1.5 | 22.1 | 20.8 | 111.4 | 108.6 | ||
D2 | KX2564 | 14.3 | 46.6 | -10.3 | 23.3 | 100.5 | 134.0 | -6.9 | 0.2 | -0.3 | 3.6 | 96.3 | 101.8 | |
KX3564 | -5.8 | 39.1 | -5.0 | 29.7 | 94.6 | 134.2 | -6.5 | -2.0 | 1.9 | 12.1 | 97.5 | 104.6 | ||
D3 | KX2564 | 15.6 | 51.9 | -9.1 | 20.9 | 101.8 | 134.7 | -16.2 | -2.9 | -8.4 | 10.9 | 87.6 | 103.5 | |
KX3564 | 9.6 | 47.9 | 7.2 | 33.6 | 108.4 | 140.4 | -7.0 | -4.5 | -0.6 | 14.0 | 96.1 | 103.9 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 36.8 | 57.5 | 146.4 | 8.1 | -2.7 | 102.4 | ||||||
反-KX3564 | 56.8 | 49.2 | 152.9 | 18.7 | -3.2 | 106.6 | ||||||||
D2 | 反-KX2564 | 21.7 | 44.7 | 132.2 | 8.0 | 4.5 | 106.2 | |||||||
反-KX3564 | 28.6 | 37.8 | 133.1 | 15.7 | 1.2 | 108.0 | ||||||||
D3 | 反-KX2564 | 22.2 | 53.6 | 136.1 | 14.1 | -0.1 | 106.5 | |||||||
反-KX3564 | 35.0 | 49.4 | 141.8 | 16.5 | -2.4 | 106.2 |
Tab.2 Analysis of morphological heterosis for basal internode in maize hybrid
类型 Type | 密度 Density | 杂交种 Hybrid | 节长Internode length | 节粗Internode diameter | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | 超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | |||||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | 10.1 | 56.2 | -4.3 | 35.7 | 102.4 | 145.2 | 0.8 | -0.9 | 13.2 | 10.1 | 106.6 | 104.3 |
KX3564 | -5.7 | 44.5 | -3.1 | 51.8 | 95.6 | 148.1 | 2.4 | -1.5 | 22.1 | 20.8 | 111.4 | 108.6 | ||
D2 | KX2564 | 14.3 | 46.6 | -10.3 | 23.3 | 100.5 | 134.0 | -6.9 | 0.2 | -0.3 | 3.6 | 96.3 | 101.8 | |
KX3564 | -5.8 | 39.1 | -5.0 | 29.7 | 94.6 | 134.2 | -6.5 | -2.0 | 1.9 | 12.1 | 97.5 | 104.6 | ||
D3 | KX2564 | 15.6 | 51.9 | -9.1 | 20.9 | 101.8 | 134.7 | -16.2 | -2.9 | -8.4 | 10.9 | 87.6 | 103.5 | |
KX3564 | 9.6 | 47.9 | 7.2 | 33.6 | 108.4 | 140.4 | -7.0 | -4.5 | -0.6 | 14.0 | 96.1 | 103.9 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 36.8 | 57.5 | 146.4 | 8.1 | -2.7 | 102.4 | ||||||
反-KX3564 | 56.8 | 49.2 | 152.9 | 18.7 | -3.2 | 106.6 | ||||||||
D2 | 反-KX2564 | 21.7 | 44.7 | 132.2 | 8.0 | 4.5 | 106.2 | |||||||
反-KX3564 | 28.6 | 37.8 | 133.1 | 15.7 | 1.2 | 108.0 | ||||||||
D3 | 反-KX2564 | 22.2 | 53.6 | 136.1 | 14.1 | -0.1 | 106.5 | |||||||
反-KX3564 | 35.0 | 49.4 | 141.8 | 16.5 | -2.4 | 106.2 |
类型 Type | 密度 Density | 杂交种 Hybrid | 单位节长干重Dry weight per unit length | |||||
---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage(%) | 超父优势 Super father advantage(%) | 杂种优势指数 Index of heterosis(%) | ||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | -7.3 | -18.7 | 60.1 | 35.6 | 117.4 | 101.7 |
KX3564 | 0.4 | -7.5 | 25.6 | 22.7 | 111.6 | 105.5 | ||
D2 | KX2564 | -19.6 | -10.5 | 20.7 | 27.3 | 96.5 | 105.1 | |
KX3564 | -10.8 | 0.0 | 6.6 | 25.2 | 97.1 | 111.2 | ||
D3 | KX2564 | -44.5 | -17.0 | -16.2 | 46.9 | 66.8 | 106.1 | |
KX3564 | -41.8 | -9.9 | -17.4 | 46.6 | 68.3 | 111.6 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 45.5 | -12.7 | 109.1 | |||
反-KX3564 | 37.2 | 3.5 | 118.0 | |||||
D2 | 反-KX2564 | 29.9 | -8.6 | 107.3 | ||||
反-KX3564 | 36.8 | 9.3 | 121.5 | |||||
D3 | 反-KX2564 | 49.5 | -15.5 | 107.9 | ||||
反-KX3564 | 47.0 | -9.7 | 111.9 |
Tab.3 Analysis of hybrid advantage of maize hybrids for stalk dry weight per unit length
类型 Type | 密度 Density | 杂交种 Hybrid | 单位节长干重Dry weight per unit length | |||||
---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage(%) | 超父优势 Super father advantage(%) | 杂种优势指数 Index of heterosis(%) | ||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | -7.3 | -18.7 | 60.1 | 35.6 | 117.4 | 101.7 |
KX3564 | 0.4 | -7.5 | 25.6 | 22.7 | 111.6 | 105.5 | ||
D2 | KX2564 | -19.6 | -10.5 | 20.7 | 27.3 | 96.5 | 105.1 | |
KX3564 | -10.8 | 0.0 | 6.6 | 25.2 | 97.1 | 111.2 | ||
D3 | KX2564 | -44.5 | -17.0 | -16.2 | 46.9 | 66.8 | 106.1 | |
KX3564 | -41.8 | -9.9 | -17.4 | 46.6 | 68.3 | 111.6 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 45.5 | -12.7 | 109.1 | |||
反-KX3564 | 37.2 | 3.5 | 118.0 | |||||
D2 | 反-KX2564 | 29.9 | -8.6 | 107.3 | ||||
反-KX3564 | 36.8 | 9.3 | 121.5 | |||||
D3 | 反-KX2564 | 49.5 | -15.5 | 107.9 | ||||
反-KX3564 | 47.0 | -9.7 | 111.9 |
变异来源 Sources of variation | 穿刺强度 Rind puncture strength | 弯曲强度 Bending strength |
---|---|---|
密度Density(D) | 38.5** | 87.4** |
正反交Reciprocal cross(Rec) | 0.0 | 5.7* |
母本Mother(M) | 26.5** | 15.7** |
父本Father(F) | 54.6** | 63.7** |
D×Rec | 1.7 | 2.2 |
D×M | 0.4 | 2.0 |
D×F | 0.9 | 5.0* |
Tab.4 Analysis of variance for stalk strength of maize hybrids (Tesseling stage)
变异来源 Sources of variation | 穿刺强度 Rind puncture strength | 弯曲强度 Bending strength |
---|---|---|
密度Density(D) | 38.5** | 87.4** |
正反交Reciprocal cross(Rec) | 0.0 | 5.7* |
母本Mother(M) | 26.5** | 15.7** |
父本Father(F) | 54.6** | 63.7** |
D×Rec | 1.7 | 2.2 |
D×M | 0.4 | 2.0 |
D×F | 0.9 | 5.0* |
类型 Type | 密度 Density | 杂交种 Hybrid | 穿刺强度Rind puncture strength | 弯曲强度Bending strength | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | 超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | |||||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | 1.4 | -10.1 | 47.1 | 33.6 | 120.1 | 107.5 | -11 | -19.4 | 43.8 | 39.9 | 109.9 | 102.3 |
KX3564 | 8.8 | -2.2 | 22.4 | 23.7 | 115.2 | 109.2 | -1.3 | -4.1 | 38.9 | 55.5 | 115.4 | 118.6 | ||
D2 | KX2564 | -1.1 | -8.8 | 76.4 | 72 | 126.8 | 119.2 | -20.2 | -18.4 | 42.5 | 70.3 | 102.3 | 110.3 | |
KX3564 | 8.3 | 4.2 | 44.3 | 39.6 | 123.7 | 119.3 | -12.2 | -8.6 | 18.6 | 48.1 | 100.9 | 113.1 | ||
D3 | KX2564 | -16.1 | -17.1 | 53.5 | 63.5 | 108.5 | 110 | -49.4 | -5.2 | 13.2 | 134.3 | 70 | 135 | |
KX3564 | -3.6 | -7.1 | 31 | 26.5 | 111.1 | 107.2 | -27.5 | 4.4 | 28.8 | 69.2 | 92.8 | 129.1 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 34.6 | -9.5 | 108.2 | 61.3 | -7 | 118 | ||||||
反-KX3564 | 34.5 | 6.4 | 118.8 | 67.6 | 3.4 | 127.9 | ||||||||
D2 | 反-KX2564 | 61.5 | -14.4 | 111.9 | 82.6 | 10.1 | 118.3 | |||||||
反-KX3564 | 29.9 | -3 | 111 | 48.7 | 15.5 | 113.5 | ||||||||
D3 | 反-KX2564 | 64.2 | -16.7 | 110.5 | 140.8 | -2.6 | 138.7 | |||||||
反-KX3564 | 30.4 | -4.2 | 110.4 | 69 | 4.3 | 129 |
Tab.5 Analysis of stem strength heterosis of maize hybrids(Tesseling stage)
类型 Type | 密度 Density | 杂交种 Hybrid | 穿刺强度Rind puncture strength | 弯曲强度Bending strength | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | 超母优势 Super mother advantage (%) | 超父优势 Super father advantage (%) | 杂种优势指数 Index of heterosis (%) | |||||||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |||
正交 Orthogonal | D1 | KX2564 | 1.4 | -10.1 | 47.1 | 33.6 | 120.1 | 107.5 | -11 | -19.4 | 43.8 | 39.9 | 109.9 | 102.3 |
KX3564 | 8.8 | -2.2 | 22.4 | 23.7 | 115.2 | 109.2 | -1.3 | -4.1 | 38.9 | 55.5 | 115.4 | 118.6 | ||
D2 | KX2564 | -1.1 | -8.8 | 76.4 | 72 | 126.8 | 119.2 | -20.2 | -18.4 | 42.5 | 70.3 | 102.3 | 110.3 | |
KX3564 | 8.3 | 4.2 | 44.3 | 39.6 | 123.7 | 119.3 | -12.2 | -8.6 | 18.6 | 48.1 | 100.9 | 113.1 | ||
D3 | KX2564 | -16.1 | -17.1 | 53.5 | 63.5 | 108.5 | 110 | -49.4 | -5.2 | 13.2 | 134.3 | 70 | 135 | |
KX3564 | -3.6 | -7.1 | 31 | 26.5 | 111.1 | 107.2 | -27.5 | 4.4 | 28.8 | 69.2 | 92.8 | 129.1 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 34.6 | -9.5 | 108.2 | 61.3 | -7 | 118 | ||||||
反-KX3564 | 34.5 | 6.4 | 118.8 | 67.6 | 3.4 | 127.9 | ||||||||
D2 | 反-KX2564 | 61.5 | -14.4 | 111.9 | 82.6 | 10.1 | 118.3 | |||||||
反-KX3564 | 29.9 | -3 | 111 | 48.7 | 15.5 | 113.5 | ||||||||
D3 | 反-KX2564 | 64.2 | -16.7 | 110.5 | 140.8 | -2.6 | 138.7 | |||||||
反-KX3564 | 30.4 | -4.2 | 110.4 | 69 | 4.3 | 129 |
年份 Year | 类型 Type | 密度 Density | 品种 Cultivar | 杂交种 Hybrid | 母本 Female parent | 父本 Male parent |
---|---|---|---|---|---|---|
2020 | 正交 | D1 | KX2564 | 0.6 | 0.7 | 0.8 |
KX3564 | 0.0 | 0.7 | 1.0 | |||
D2 | KX2564 | 1.0 | 1.1 | 2.0 | ||
KX3564 | 0.4 | 1.1 | 1.3 | |||
D3 | KX2564 | 2.3 | 1.1 | 2.9 | ||
KX3564 | 0.5 | 1.1 | 1.4 | |||
2021 | 正交 | D1 | KX2564 | 0.0 | 0.0 | 0.0 |
KX3564 | 0.0 | 0.0 | 1.1 | |||
D2 | KX2564 | 0.0 | 0.0 | 7.8 | ||
KX3564 | 0.0 | 0.0 | 1.1 | |||
D3 | KX2564 | 0.8 | 0.0 | 0.4 | ||
KX3564 | 0.0 | 0.0 | 2.1 | |||
反交 | D1 | 反-KX2564 | 0.0 | 0.0 | 0.0 | |
反-KX3564 | 0.0 | 1.1 | 0.0 | |||
D2 | 反-KX2564 | 0.0 | 7.8 | 0.0 | ||
反-KX3564 | 0.0 | 1.1 | 0.0 | |||
D3 | 反-KX2564 | 0.0 | 0.4 | 0.0 | ||
反-KX3564 | 0.0 | 2.1 | 0.0 |
Tab.6 Comparison of lodging rates between maize hybrids and their parents
年份 Year | 类型 Type | 密度 Density | 品种 Cultivar | 杂交种 Hybrid | 母本 Female parent | 父本 Male parent |
---|---|---|---|---|---|---|
2020 | 正交 | D1 | KX2564 | 0.6 | 0.7 | 0.8 |
KX3564 | 0.0 | 0.7 | 1.0 | |||
D2 | KX2564 | 1.0 | 1.1 | 2.0 | ||
KX3564 | 0.4 | 1.1 | 1.3 | |||
D3 | KX2564 | 2.3 | 1.1 | 2.9 | ||
KX3564 | 0.5 | 1.1 | 1.4 | |||
2021 | 正交 | D1 | KX2564 | 0.0 | 0.0 | 0.0 |
KX3564 | 0.0 | 0.0 | 1.1 | |||
D2 | KX2564 | 0.0 | 0.0 | 7.8 | ||
KX3564 | 0.0 | 0.0 | 1.1 | |||
D3 | KX2564 | 0.8 | 0.0 | 0.4 | ||
KX3564 | 0.0 | 0.0 | 2.1 | |||
反交 | D1 | 反-KX2564 | 0.0 | 0.0 | 0.0 | |
反-KX3564 | 0.0 | 1.1 | 0.0 | |||
D2 | 反-KX2564 | 0.0 | 7.8 | 0.0 | ||
反-KX3564 | 0.0 | 1.1 | 0.0 | |||
D3 | 反-KX2564 | 0.0 | 0.4 | 0.0 | ||
反-KX3564 | 0.0 | 2.1 | 0.0 |
年份 Year | 类型 Type | 密度 Density | 杂交种 Hybrid | 收获穗数 Ears(104) | 单穗粒数 Grains per ear | 千粒重 Grain weight (g) | 理论产量 Yield (kg/hm2) |
---|---|---|---|---|---|---|---|
2020 | 正交 | D1 | KX2564 | 4.5±0.4a | 672±15.9b | 370±19.1a | 11 749±293b |
KX3564 | 4.5±0.4a | 732±22.7a | 374±11.1a | 12 712±138a | |||
D2 | KX2564 | 8.5±0.4a | 561±6.2b | 306±7.2b | 15 191±644b | ||
KX3564 | 8.5±0.0a | 629±4.3a | 342±9.9a | 18 806±377a | |||
D3 | KX2564 | 13.0±0.4a | 454±19.7b | 316±16.5a | 18 575±320b | ||
KX3564 | 13.0±0.4a | 493±6.2a | 332.7±6.0a | 21 575±587a | |||
2021 | 正交 | D1 | KX2564 | 4.3±0.2a | 781±11.7a | 359.±0.3b | 12 237±102b |
KX3564 | 4.5±0.2a | 725±7.8b | 378±2.2a | 12 876±298a | |||
D2 | KX2564 | 8.7±0.2b | 581±29.5a | 315±0.4b | 17 122±842b | ||
KX3564 | 9.2±0.1a | 566±18.5a | 343±0.1a | 19 100±647a | |||
D3 | KX2564 | 13.4±0.1a | 455±5.9b | 294±15.2b | 19 232±264b | ||
KX3564 | 12.8±0.2b | 502±5.2a | 345±0.5a | 22 767±662a | |||
反交 | D1 | 反-KX2564 | 4.6±0.0a | 781±9.8b | 367±5.0a | 13 289±88.7a | |
反-KX3564 | 4.2±0.1b | 835±10.7a | 358±0.8a | 13 173±252a | |||
D2 | 反-KX2564 | 8.8±0.1a | 583±4.8a | 317±6.5a | 17 450±439b | ||
反-KX3564 | 9.1±0.2a | 595±6.6a | 332±4.6a | 19 226±766a | |||
D3 | 反-KX2564 | 13.1±0.2a | 478±14.5b | 324±6.2a | 20 648±246b | ||
反-KX3564 | 13.1±0.2a | 506±0.6a | 327±3.2a | 22 686±376a |
Tab.7 Comparison of yield difference between maize hybrids
年份 Year | 类型 Type | 密度 Density | 杂交种 Hybrid | 收获穗数 Ears(104) | 单穗粒数 Grains per ear | 千粒重 Grain weight (g) | 理论产量 Yield (kg/hm2) |
---|---|---|---|---|---|---|---|
2020 | 正交 | D1 | KX2564 | 4.5±0.4a | 672±15.9b | 370±19.1a | 11 749±293b |
KX3564 | 4.5±0.4a | 732±22.7a | 374±11.1a | 12 712±138a | |||
D2 | KX2564 | 8.5±0.4a | 561±6.2b | 306±7.2b | 15 191±644b | ||
KX3564 | 8.5±0.0a | 629±4.3a | 342±9.9a | 18 806±377a | |||
D3 | KX2564 | 13.0±0.4a | 454±19.7b | 316±16.5a | 18 575±320b | ||
KX3564 | 13.0±0.4a | 493±6.2a | 332.7±6.0a | 21 575±587a | |||
2021 | 正交 | D1 | KX2564 | 4.3±0.2a | 781±11.7a | 359.±0.3b | 12 237±102b |
KX3564 | 4.5±0.2a | 725±7.8b | 378±2.2a | 12 876±298a | |||
D2 | KX2564 | 8.7±0.2b | 581±29.5a | 315±0.4b | 17 122±842b | ||
KX3564 | 9.2±0.1a | 566±18.5a | 343±0.1a | 19 100±647a | |||
D3 | KX2564 | 13.4±0.1a | 455±5.9b | 294±15.2b | 19 232±264b | ||
KX3564 | 12.8±0.2b | 502±5.2a | 345±0.5a | 22 767±662a | |||
反交 | D1 | 反-KX2564 | 4.6±0.0a | 781±9.8b | 367±5.0a | 13 289±88.7a | |
反-KX3564 | 4.2±0.1b | 835±10.7a | 358±0.8a | 13 173±252a | |||
D2 | 反-KX2564 | 8.8±0.1a | 583±4.8a | 317±6.5a | 17 450±439b | ||
反-KX3564 | 9.1±0.2a | 595±6.6a | 332±4.6a | 19 226±766a | |||
D3 | 反-KX2564 | 13.1±0.2a | 478±14.5b | 324±6.2a | 20 648±246b | ||
反-KX3564 | 13.1±0.2a | 506±0.6a | 327±3.2a | 22 686±376a |
类型 Type | 密度 Density | 杂交种 Hybrid | 单穗粒数Grains per ear | 千粒重 1 000-grain weight | 理论产量Yield | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | 超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | 超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | |||
正交 Orthogonal | D1 | KX2564 | 75.9 | 105.4 | 189.5 | 20.6 | 8.4 | 114.2 | 112.6 | 118.9 | 215.7 |
KX3564 | 63.3 | 63.7 | 163.5 | 27.1 | 23.0 | 125.0 | 123.7 | 99.4 | 210.9 | ||
D2 | KX2564 | 44.6 | 70.4 | 156.5 | 18.2 | 4.0 | 110.6 | 78.4 | 77.7 | 178.0 | |
KX3564 | 40.9 | 49.5 | 145.1 | 28.8 | 16.3 | 122.2 | 99.0 | 86.6 | 192.6 | ||
D3 | KX2564 | 37.4 | 42.0 | 139.7 | 11.9 | -4.9 | 102.8 | 66.7 | 38.3 | 151.2 | |
KX3564 | 51.8 | 76.8 | 163.4 | 31.5 | 21.6 | 126.4 | 97.4 | 86.7 | 191.9 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 105.3 | 75.8 | 189.4 | 11.0 | 23.5 | 116.9 | 137.8 | 130.9 | 234.3 |
反-KX3564 | 88.5 | 88.0 | 188.2 | 16.3 | 20.3 | 118.3 | 104.0 | 128.9 | 215.7 | ||
D2 | 反-KX2564 | 70.9 | 45.0 | 156.9 | 4.5 | 18.8 | 111.2 | 81.1 | 81.8 | 181.5 | |
反-KX3564 | 57.0 | 48.0 | 152.4 | 12.3 | 24.4 | 118.0 | 87.8 | 100.3 | 193.8 | ||
D3 | 反-KX2564 | 49.2 | 44.4 | 146.7 | 4.7 | 23.2 | 113.2 | 48.5 | 79.0 | 162.3 | |
反-KX3564 | 78.0 | 52.8 | 164.4 | 15.3 | 24.6 | 119.8 | 86.0 | 96.7 | 191.2 |
Tab.8 Analysis of hybrid advantage of maize hybrids in terms of yield and constituent factors
类型 Type | 密度 Density | 杂交种 Hybrid | 单穗粒数Grains per ear | 千粒重 1 000-grain weight | 理论产量Yield | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | 超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | 超母 优势 Super mother advantage (%) | 超父 优势 Super father advantage (%) | 杂种 优势 指数 Index of heterosis (%) | |||
正交 Orthogonal | D1 | KX2564 | 75.9 | 105.4 | 189.5 | 20.6 | 8.4 | 114.2 | 112.6 | 118.9 | 215.7 |
KX3564 | 63.3 | 63.7 | 163.5 | 27.1 | 23.0 | 125.0 | 123.7 | 99.4 | 210.9 | ||
D2 | KX2564 | 44.6 | 70.4 | 156.5 | 18.2 | 4.0 | 110.6 | 78.4 | 77.7 | 178.0 | |
KX3564 | 40.9 | 49.5 | 145.1 | 28.8 | 16.3 | 122.2 | 99.0 | 86.6 | 192.6 | ||
D3 | KX2564 | 37.4 | 42.0 | 139.7 | 11.9 | -4.9 | 102.8 | 66.7 | 38.3 | 151.2 | |
KX3564 | 51.8 | 76.8 | 163.4 | 31.5 | 21.6 | 126.4 | 97.4 | 86.7 | 191.9 | ||
反交 Reciprocal cross | D1 | 反-KX2564 | 105.3 | 75.8 | 189.4 | 11.0 | 23.5 | 116.9 | 137.8 | 130.9 | 234.3 |
反-KX3564 | 88.5 | 88.0 | 188.2 | 16.3 | 20.3 | 118.3 | 104.0 | 128.9 | 215.7 | ||
D2 | 反-KX2564 | 70.9 | 45.0 | 156.9 | 4.5 | 18.8 | 111.2 | 81.1 | 81.8 | 181.5 | |
反-KX3564 | 57.0 | 48.0 | 152.4 | 12.3 | 24.4 | 118.0 | 87.8 | 100.3 | 193.8 | ||
D3 | 反-KX2564 | 49.2 | 44.4 | 146.7 | 4.7 | 23.2 | 113.2 | 48.5 | 79.0 | 162.3 | |
反-KX3564 | 78.0 | 52.8 | 164.4 | 15.3 | 24.6 | 119.8 | 86.0 | 96.7 | 191.2 |
性状 Traits | 节长 Internode length | 节粗 Internode diameter | 单位节长干重 Dry weight per unit length | 穿刺强度 Rind puncture strength | 弯曲强度 Bending strength |
---|---|---|---|---|---|
穿刺强度 Rind puncture strength | -0.709** | 0.532** | 0.719** | 1 | 0.758** |
弯曲强度 Bending strength | -0.603** | 0.822** | 0.946** | 0.758** | 1 |
Tab.9 Correlation of lodging resistance traits of stem of maize hybrids
性状 Traits | 节长 Internode length | 节粗 Internode diameter | 单位节长干重 Dry weight per unit length | 穿刺强度 Rind puncture strength | 弯曲强度 Bending strength |
---|---|---|---|---|---|
穿刺强度 Rind puncture strength | -0.709** | 0.532** | 0.719** | 1 | 0.758** |
弯曲强度 Bending strength | -0.603** | 0.822** | 0.946** | 0.758** | 1 |
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