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作物学报 ›› 2021, Vol. 47 ›› Issue (9): 1724-1740.doi: 10.3724/SP.J.1006.2021.04253

• 研究论文 • 上一篇    下一篇

种植密度对油菜正反交组合产量与倒伏相关性状的影响

娄洪祥1(), 姬建利1, 蒯婕1, 汪波1, 徐亮2, 李真1, 刘芳3, 黄威4, 刘暑艳5, 尹羽丰6, 王晶1,*(), 周广生1   

  1. 1华中农业大学植物科学技术学院 / 农业农村部长江中游作物生理生态与耕作重点实验室, 湖北武汉 430070
    2青海省农林科学院, 青海西宁 810016
    3全国农技推广中心油料处, 北京 100125
    4黄冈市农业科学院, 湖北黄冈 438000
    5荆州农业科学院, 湖北荆州 434000
    6襄阳市农业科学院, 湖北襄阳 441057
  • 收稿日期:2020-11-23 接受日期:2021-01-21 出版日期:2021-09-12 网络出版日期:2021-02-19
  • 通讯作者: 王晶
  • 作者简介:E-mail: davidlou@webmail.hzau.edu.cn
  • 基金资助:
    国家重点研发计划项目“大田经济作物优质丰产的生理基础与调控”()(2018YFD1000900)

Effects of planting density on yield and lodging related characters of reciprocal hybrids in Brassica napus L.

LOU Hong-Xiang1(), JI Jian-Li1, KUAI Jie1, WANG Bo1, XU Liang2, LI Zhen1, LIU Fang3, HUANG Wei4, LIU Shu-Yan5, YIN Yu-Feng6, WANG Jing1,*(), ZHOU Guang-Sheng1   

  1. 1College of Plant Science and Technology, Huazhong Agricultural University / Key Laboratory of Crop Ecophysiology and Farming System for the Middle Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan 430070, Hubei, China
    2Qinghai Academy of Agricultural and Forestry Sciences, Xining 810016, Qinghai, China
    3National Agricultural Technology Extension Service Center, Beijing 100125, China
    4Huanggang Academy of Agriculture Science, Huanggang 438000, Hubei, China
    5Jingzhou Academy of Agriculture Science, Jingzhou 434000, Hubei, China
    6Xiangyang Academy of Agriculture Science, Xiangyang 441057, Hubei, China
  • Received:2020-11-23 Accepted:2021-01-21 Published:2021-09-12 Published online:2021-02-19
  • Contact: WANG Jing
  • Supported by:
    National Key Research and Development Program of China “Physiological Basis and Agronomic Management for High-quality and High-yield of Field Cash Crops”(2018YFD1000900)

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摘要：

高产抗倒不协调是油菜生产中最主要的矛盾, 严重制约着油菜生产效益的进一步提高。在高密度、机械化生产模式下, 这种矛盾尤为突出。受母系遗传的影响, 杂交油菜的正、反交组合在产量与倒伏相关性状上常表现出明显差异, 但种植密度对不同杂交组合这些关键性状的影响尚不明确。本研究针对浙油50、华航901及其正交(华航901×浙油50)与反交(浙油50×华航901)组合设置5个种植密度, 考察其产量及倒伏相关性状并计算其杂种优势, 研究种植密度对亲本及正、反交组合产量与倒伏相关性状的影响, 为当前高密度直播生产模式下杂交油菜亲本的选配提供依据。结果表明, 随种植密度增加, 亲本及正、反交组合的实际产量和经济系数均呈先增后降的趋势, 且无论正、反交组合, 其实际产量的动态变化规律均与父本更为接近; 倒伏指数在两点随种植密度的变化规律不同, 但无论正、反交组合, 其倒伏指数的动态变化规律均与母本相一致。在西宁试点, 杂交组合产量均具有明显的平均杂种优势, 且正交组合比反交组合具有更大的杂种优势; 正交组合具有一定的抗倒性杂种优势, 但是反交组合无抗倒性杂种优势。综上所述, 高密度直播生产模式下, 杂交油菜亲本选配推荐方案以高产品种为父本, 抗倒性强的品种为母本进行组配, 可以获得高产、抗倒性强且更适宜密植的杂交油菜品种。

关键词: 油菜, 正反交组合, 种植密度, 产量, 倒伏

Abstract:

High yield and lodging resistance are two goals in rapeseed production that are hard to reconcile, which restrict severely the further improvement of economic performance. This contradiction is particularly prominent in the high-density and mechanize farming mode. Due to maternal inheritance, there are obvious differences in yield and lodging resistance related traits among reciprocal hybrids, but the effects of planting density on these key traits are not clear. Here, Huahang 901 and Zheyou 50, which are conventional rapeseed varieties and their reciprocal hybrids, were planted with gradient density. The yield and lodging related traits were measured and the heterosis of each trait was calculated. In order to provide the basis for the selection of parents under the high-density and direct seeding farming mode, the effects of planting density on yield and lodging related traits of parents and reciprocal hybrids were investigated. The results showed that the actual yield and economic coefficient of two parents and their reciprocal hybrids were first increased and then decreased with the increase of the planting density. Interesting, the dynamic change pattern and the values of both traits of reciprocal hybrids under gradient density were well consistent with those of paternal parent. The variation of lodging index with increased density at two sites was different, but the values and the dynamic change patterns of reciprocal hybrids were consistent with that of the maternal parent. In 2017 in Xining, the actual yield of reciprocal hybrids had obvious heterosis and Huahang 901×Zheyou 50 showed higher heterosis than that of Zheyou 50×Huahang 901. Meanwhile, the Huahang 901×Zheyou 50 had greater heterosis of lodging resistances, but there was no such heterosis in Zheyou 50×Huahang 901. In conclusion, to obtain hybrids rapeseed varieties with high yield lodging resistance and dense planting under the high-density and direct seeding farming mode, it was better to select those varieties with high-yield as paternal parents and those varieties with strong lodging resistance as maternal parents.

Key words: rapeseed, reciprocal hybrids, planting density, yield, lodging

图1

种植密度对油菜产量构成因子的影响(2017) D1、D2、D3、D4和D5分别表示种植密度为1.5×105、3.0×105、4.5×105、6.0×105和7.5×105株 hm-2。ZY50、HH901、HH901×ZY50和ZY50×HH901分别代表浙油50、华航901、华航901×浙油50和浙油50×华航901。 "

图2

种植密度对油菜产量相关性状的影响(2017) 缩写和处理同图1。 "

附表1

种植密度对油菜产量与产量构成因子的影响"

年份(点)
Year
(site) 		品种
Variety 		密度Density 单株角果数
Number of siliques per plant 		每角果粒数
Number of seeds per silique 		千粒重
1000-seed weight (g) 		单株产量
Yield per plant (g) 		实际产量Actual yield
(kg hm-2) 		生物产量
Biological yield
(kg hm-2) 		经济系数Economic coefficient
(%)
2017武汉 浙油50 D1 315.6 ab 20.6 a 3.47 hij 22.56 a 2590.5 j 10384.4 fg 24.97 jkl
2017 Wuhan Zheyou 50 D2 228.5 efg 19.0 b 3.60 bcde 15.63 e 2829.5 d 11064.8 e 25.62 hij
D3 192.6 ghij 18.8 b 3.63 ab 13.14 g 3082.7 b 11597.3 c 26.62 efg
D4 187.4 hij 18.1 c 3.62 abc 11.28 h 2651.9 ghij 10054.4 h 26.43 fg
D5 179.3 hij 17.4 de 3.68 a 10.48 ij 2618.1 hij 10314.7 g 25.41 ijk
华航901
Huahang 901 		D1 292.0 abc 16.6 f 3.61 bcd 17.50 d 2418.2 l 9288.5 m 26.09 ghi
D2 283.6 bcd 14.6 hi 3.61 bcd 14.92 f 2649.8 ghij 9704.5 k 27.33 bcd
D3 203.6 ghi 13.8 jk 3.54 efg 9.95 jk 2717.9 efg 9725.6 k 28.00 ab
D4 198.9 ghij 13.5 kl 3.56 cdef 9.56 kl 2642.4 hij 9974.3 i 26.52 fg
D5 186.9 hij 13.1 l 3.55 def 8.69 m 2509.8 k 9611.2 l 26.17 gh
华航901 D1 326.5 a 17.8 cd 3.48 ghij 20.22 b 2684.7 fgh 9933.1 i 27.06 def
×浙油50 D2 311.0 ab 16.9 ef 3.51 fghi 18.45 c 2862.3 d 10449.1 f 27.45 abcd
Huahang 901× D3 254.5 cde 14.4 ij 3.48 ghij 12.75 g 3182.3 a 11336.5 d 28.11 a
Zheyou 50 D4 216.1 efgh 14.3 ij 3.52 fgh 10.88 hi 2736.2 ef 9849.7 j 27.84 abc
D5 206.8 fghi 13.4 kl 3.46 hij 9.59 kl 2601.5 ij 9542.8 l 27.29 cde
浙油50× D1 246.1 de 16.6 f 3.42 j 16.97 d 2405.3 l 10075.0 h 23.90 n
年份(点)
Year
(site) 		品种
Variety 		密度Density 单株角果数
Number of siliques per plant 		每角果粒数
Number of seeds per silique 		千粒重
1000-seed weight (g) 		单株产量
Yield per plant (g) 		实际产量Actual yield
(kg hm-2) 		生物产量
Biological yield
(kg hm-2) 		经济系数Economic coefficient
(%)
华航901 D2 244.6 ef 15.4 g 3.45 ij 13.00 g 2663.1 ghi 10993.1 e 24.26 mn
Zheyou 50× D3 187.3 hij 15.3 g 3.51 fghi 10.06 jk 2961.2 c 12150.1 b 24.42 lmn
Huahang 901 D4 171.4 ij 15.2 gh 3.54 efg 9.22 lm 3055.2 b 12342.0 a 24.79 klm
D5 164.2 j 15.2 gh 3.52 fgh 7.79 n 2754.5 e 11266.8 d 24.50 lmn
2017西宁 浙油50 D1 241.2 c 23.9 c 3.88 abc 22.39 c 3129.4 j 12767.8 n 24.54 m
2017 Xining Zheyou 50 D2 162.6 g 21.8 de 3.72 ef 13.20 e 3884.0 f 14689.3 e 26.48 hijk
D3 126.8 ij 21.7 de 3.56 g 9.79 h 4138.6 cd 15445.8 c 26.82 ghij
D4 100.9 m 19.5 gh 3.86 abc 7.59 jk 3886.1 f 14351.0 fg 27.14 fghi
D5 93.7 n 19.6 gh 3.91 abc 7.18 l 3852.9 f 14978.6 d 25.75 kl
华航901 D1 225.8 d 26.4 a 3.81 cde 22.72 c 3352.7 i 12218.5 o 27.50 efg
Huahang 901 D2 161.6 g 20.3 fg 3.84 bcd 12.61 f 3686.3 g 12872.5 m 28.67 cd
D3 128.8 ij 19.0 hi 3.94 ab 9.65 h 3878.6 f 13063.0 l 29.75 ab
D4 95.9 mn 19.3 hi 3.96 a 7.34 kl 3963.1 ef 13707.7 k 28.95 bcd
D5 76.3 o 18.6 i 3.95 ab 5.61 n 3567.7 gh 12720.1 n 28.11 de
华航901 D1 306.6 a 25.1 b 3.68 fg 28.28 a 3870.6 f 14209.0 h 27.25 efgh
×浙油50 D2 181.1 f 22.1 d 3.68 f 14.70 d 4072.4 de 14701.0 e 27.77 ef
Huahang 901× D3 150.4 h 17.1 jk 3.87 abc 9.93 h 4573.7 a 15004.7 d 30.52 a
Zheyou 50 D4 123.6 j 16.6 k 3.86 abc 7.90 j 4198.8 cd 14264.2 gh 29.50 bc
D5 107.0 l 21.1 ef 3.94 ab 8.88 i 4113.3 cd 13944.5 j 29.54 bc
浙油50× D1 295.0 b 21.3 de 3.72 ef 23.38 b 3554.7 h 14365.2 f 24.81 m
华航901 D2 193.0 e 18.5 i 3.64 fg 12.98 e 3644.0 gh 14049.1 i 25.97 jkl
Zheyou 50× D3 153.8 h 17.1 jk 3.93 ab 10.33 g 4208.0 c 16039.6 b 26.29 ijk
Huahang 901 D4 132.0 i 17.5 j 3.97 a 9.20 i 4422.8 b 16470.1 a 26.89 fghi
D5 117.0 k 15.0 l 3.74 def 6.58 m 3621.3 gh 14371.2 f 25.26 lm
方差分析Variance analyses
年份(点) Year & Site (YS) ** ** ** ** ** ** **
品种Variety (V) ** ** ** ** ** ** **
密度Density (D) ** ** ** ** ** ** **
YS×V ** ** ** ** ** ** **
YS×D ** ** ** ** ** ** **
V×D NS ** ** ** ** ** **
YS×V×D ** ** ** ** ** ** *

图3

种植密度对正、反交组合产量杂种优势指数的影响(2017) 缩写和处理同图1。不同小写字母表示相同品种密度间差异达显著水平(P < 0.05)。 "

图4

种植密度对油菜成熟期主要农艺性状的影响(2017) 缩写和处理同图1。 "

附表2

种植密度对油菜成熟期主要农艺性状的影响(2017年, 武汉)"

品种
Variety 		密度
Density 		株高
Plant height (cm) 		一次分枝高度
Primary branch height (cm) 		分枝数
Branch
number 		根颈粗
Root crown diameter (mm) 		地上部鲜重
Shoot fresh weight (g) 		根鲜重
Root fresh weight (g) 		茎秆抗折力
Stem breaking resistance (N)
浙油50 D1 212.6 a 88.3 gh 7.9 c 20.47 b 328.92 a 42.30 a 140.78 a
Zheyou 50 D2 202.0 c 94.6 abc 6.2 h 16.37 g 200.80 f 23.98 g 108.65 c
D3 193.1 e 95.1 ab 6.1 i 15.22 h 173.52 h 20.31 i 98.64 cd
D4 188.3 f 96.0 a 5.6 k 14.85 ij 157.29 i 19.08 j 92.02 de
D5 180.8 ij 86.8 hij 5.4 l 14.72 j 142.82 k 18.56 j 78.18 fg
华航901 D1 200.9 c 87.7 ghi 8.0 b 18.38 d 231.58 e 30.66 d 95.80 cde
Huahang D2 186.4 fg 89.9 fg 6.5 f 17.94 e 176.17 h 28.38 e 83.44 ef
901 D3 181.0 hij 90.8 ef 6.3 g 15.21 h 146.77 j 17.06 k 61.94 hi
D4 180.3 ij 92.3 cde 6.1 i 14.45 k 129.48 l 16.28 l 56.74 hij
D5 172.6 k 83.1 kl 5.8 j 13.87 m 116.39 n 14.81 m 49.40 ij
华航901 D1 196.8 d 83.0 kl 8.1 a 21.05 a 263.66 b 40.51 b 134.12 ab
×浙油50 D2 189.0 f 84.5 jk 7.7 d 20.65 b 241.60 c 37.74 c 122.09 b
Huahang 901 D3 179.8 ij 85.5 ij 6.6 e 16.84 f 141.65 k 26.91 f 65.41 gh
×Zheyou 50 D4 179.1 j 85.8 ij 6.3 g 14.96 ij 130.50 l 21.22 h 56.91 hij
D5 167.9 l 81.0 l 5.2 n 14.47 k 119.43 mn 21.08 h 47.83 j
浙油50× D1 208.5 b 93.3 bcd 6.5 f 18.93 c 235.16 d 40.20 b 103.34 cd
华航901 D2 199.7 cd 94.1 abc 5.8 j 17.85 e 194.07 g 27.71 e 94.33 de
Zheyou 50× D3 184.3 gh 92.6 cde 5.3 m 15.03 hi 156.82 i 20.09 i 84.87 ef
Huahang 901 D4 182.5 hi 91.3 def 5.1 o 14.33 k 130.48 l 17.77 k 63.30 h
D5 173.1 k 81.3 l 4.6 p 14.11 l 121.91 m 15.92 l 59.04 hij
方差分析Variance analyses
品种Variety (V) ** ** ** ** ** ** **
密度Density (D) ** ** ** ** ** ** **
V×D ** ** ** ** ** ** **

附表3

种植密度对油菜成熟期主要农艺性状的影响(2017年, 西宁)"

品种
Variety 		密度Density 株高
Plant height (cm) 		一次分枝高度
Primary branch height (cm) 		分枝数
Branch
number 		根颈粗
Root crown diameter (mm) 		地上部鲜重
Shoot fresh weight (g) 		根鲜重
Root fresh weight (g) 		茎秆抗折力
Stem breaking resistance (N)
浙油50 D1 174.4 a 73.1 g 5.9 e 17.38 c 292.65 c 31.21 b 130.01 b
Zheyou 50 D2 168.1 b 77.8 cd 5.2 i 13.41 f 197.37 e 14.51 h 69.91 de
D3 157.8 de 89.3 a 4.7 k 12.42 k 129.09 i 13.06 i 55.57 ef
D4 143.5 hi 79.9 b 4.1 m 10.15 o 91.74 k 7.40 m 33.31 h
D5 132.7 k 74.2 f 4.0 o 9.11 r 80.72 l 6.65 n 24.21 h
华航901 D1 126.0 l 26.1 p 7.0 c 17.44 c 190.02 f 24.12 d 73.22 d
Huahang D2 116.2 m 31.7 o 6.0 d 12.99 h 121.17 j 15.26 g 62.01 def
901 D3 113.5 m 34.9 n 5.5 g 12.80 i 118.13 j 15.17 gh 48.22 fg
D4 106.3 n 44.0 l 4.1 n 9.86 p 61.55 m 8.99 k 34.43 gh
D5 103.4 n 40.7 m 4.0 no 9.39 q 60.03 mn 7.24 mn 25.30 h
品种
Variety 		密度Density 株高
Plant height (cm) 		一次分枝高度
Primary branch height (cm) 		分枝数
Branch
number 		根颈粗
Root crown diameter (mm) 		地上部鲜重
Shoot fresh weight (g) 		根鲜重
Root fresh weight (g) 		茎秆抗折力
Stem breaking resistance (N)
华航901 D1 158.8 de 58.7 j 7.5 b 23.11 a 337.99 b 33.53 a 125.40 b
×浙油50 D2 149.4 f 63.5 i 5.8 f 14.93 d 179.60 g 18.73 f 67.68 de
Huahang 901 D3 141.8 i 67.6 h 5.0 j 13.18 g 128.38 i 12.57 i 48.46 fg
×Zheyou 50 D4 136.5 j 67.6 h 4.5 l 11.87 l 78.40 l 9.70 j 31.86 h
D5 135.6 jk 78.0 c 4.5 l 10.53 n 77.11 l 9.04 jk 20.69 h
浙油50× D1 163.0 c 56.0 k 7.6 a 17.64 b 344.22 a 26.15 c 158.41 a
华航901 D2 160.8 cd 73.5 g 5.9 e 14.45 e 225.05 d 19.98 e 92.68 c
Zheyou 50× D3 156.8 e 77.2 de 5.4 h 12.61 j 146.89 h 12.66 i 57.56 ef
Huahang 901 D4 148.6 fg 76.8 e 3.6 p 11.16 m 81.25 l 8.19 l 31.64 h
D5 145.6 gh 73.4 g 3.2 q 8.34 s 56.11 n 4.29 o 19.84 h
方差分析Variance analyses
品种Varity (V) ** ** ** ** ** ** **
密度Density (D) ** ** ** ** ** ** **
V×D ** ** ** ** ** ** **

图5

种植密度对油菜茎秆倒伏指数的影响(2017) P1、P2、P3和P4分别表示除去缩颈段后将主茎平均分为4段, 从地面往上第1、2、3、4段。图中不同字母表示各处理差异达显著水平(P < 0.05)。其他缩写和处理同 图1。 "

附表4

种植密度对油菜茎秆不同部位倒伏指数的影响"

年份(点)
Year (site) 		品种
Variety 		密度Density 第1段
Part one
(cm g g-1) 		第2段
Part two
(cm g g-1) 		第3段
Part three
(cm g g-1) 		第4段
Part four
(cm g g-1) 		4段平均值
Average of four parts (cm g g-1)
2017 武汉
2017 Wuhan 		浙油50
Zheyou 50 		D1 2.81 c 3.20 b 3.46 b 3.23 d 3.17 b
D2 2.31 h 2.49 f 2.69 h 2.93 g 2.61 g
D3 2.29 hi 2.32 h 2.42 j 2.51 ij 2.39 j
D4 1.79 k 2.19 i 2.38 j 2.12 l 2.12 l
D5 1.61 l 1.96 k 2.19 k 2.17 kl 1.98 n
华航901 D1 3.07 a 3.29 a 3.71 a 3.84 a 3.48 a
Huahang 901 D2 2.88 b 3.02 c 3.21 cd 3.43 c 3.14 b
D3 2.82 c 2.80 d 3.07 e 3.02 f 2.93 d
D4 2.59 e 2.66 e 3.20 d 3.00 f 2.86 e
D5 2.38 g 2.45 fg 2.98 f 2.52 ij 2.58 gh
华航901 D1 2.70 d 2.98 c 3.19 d 3.41 c 3.07 c
×浙油50 D2 2.45 f 2.69 e 2.83 g 3.10 e 2.77 f
Huahang 901 D3 2.38 g 2.42 g 2.63 h 2.85 h 2.57 gh
×Zheyou 50 D4 2.35 gh 2.45 fg 2.82 g 2.55 i 2.54 hi
D5 2.12 j 2.24 i 2.50 i 2.47 j 2.33 k
浙油50× D1 2.69 d 3.02 c 3.27 c 3.60 b 3.15 b
华航901 D2 2.24 i 2.33 h 2.52 i 2.97 fg 2.51 i
Zheyou 50× D3 1.83 k 1.96 k 2.19 k 2.46 j 2.11 l
Huahang 901 D4 1.78 k 2.05 j 2.17 k 2.21 k 2.05 m
年份(点)
Year (site) 		品种
Variety 		密度Density 第1段
Part one
(cm g g-1) 		第2段
Part two
(cm g g-1) 		第3段
Part three
(cm g g-1) 		第4段
Part four
(cm g g-1) 		4段平均值
Average of four parts (cm g g-1)
D5 1.51 m 1.74 l 1.93 l 2.20 k 1.84 o
2017 西宁
2017 Xining 		浙油50
Zheyou 50 		D1 2.86 e 3.23 c 2.71 f 2.36 f 2.79 e
D2 2.15 i 3.10 ef 2.59 g 2.28 h 2.53 g
D3 2.56 g 2.79 h 2.45 h 1.84 l 2.41 i
D4 2.83 e 3.04 fg 3.02 d 2.28 gh 2.79 e
D5 3.42 b 3.86 a 3.42 a 2.47 e 3.29 a
华航901 D1 1.77 k 2.12 k 2.83 e 3.30 a 2.50 g
Huahang 901 D2 1.62 l 1.81 m 1.86 j 2.05 j 1.83 m
D3 1.39 m 1.74 n 1.85 j 1.96 k 1.73 n
D4 1.43 m 1.67 n 1.75 k 1.40 m 1.56 o
D5 1.95 j 2.28 j 2.11 i 2.13 i 2.12 k
华航901 D1 2.62 g 3.02 g 2.63 g 2.34 fg 2.65 f
×浙油50 D2 2.40 h 2.42 i 2.10 i 1.96 k 2.22 j
Huahang 901 D3 2.18 i 2.17 k 1.91 j 1.81 l 2.02 l
×Zheyou 50 D4 1.91 j 1.96 l 1.53 l 1.42 m 1.71 n
D5 2.70 f 2.82 h 2.46 h 1.79 l 2.44 h
浙油50× D1 3.01 d 3.15 de 3.24 c 2.86 b 3.06 b
华航901 D2 2.72 f 3.03 g 3.03 d 2.86 b 2.91 d
Zheyou 50× D3 2.88 e 3.21 cd 3.02 d 2.72 c 2.96 c
Huahang 901 D4 3.20 c 3.26 c 3.25 c 2.43 e 3.04 b
D5 3.66 a 3.49 b 3.35 b 2.58 d 3.27 a
方差分析Variance analyses
年份(点) Year & Site (YS) ** ** ** ** **
品种Variety (V) ** ** ** ** **
密度Density (D) ** ** ** ** **
YS×V ** ** ** ** **
YS×D ** ** ** ** **
V×D ** ** ** ** **
YS×V×D ** ** ** ** **

图6

种植密度对正、反交组合倒伏相关杂种优势指数的影响(2017) 缩写和处理同图1。不同小写字母表示相同品种密度间差异达显著水平(P < 0.05)。 "

附表5

种植密度对正反交组合倒伏杂种优势指数的影响"

年份(点)
Year (site) 		品种
Variety 		密度
Density 		株高
Plant height (%) 		地上部鲜重
Shoot fresh weight (%) 		倒伏指数Lodging index (%)
第1段
Part one 		第2段
Part two 		第3段
Part three 		第4段
Part four 		平均值
Average
2017 武汉
2017 Wuhan 		华航901
×浙油50
Huahang 901
×Zheyou 50 		D1 95.19 f 94.08 d 91.76 b 91.84 d 88.90 c 96.44 cd 92.24 d
D2 97.32 cde 128.20 a 94.38 b 97.66 bc 95.94 b 97.54 c 96.44 bc
D3 96.12 ef 88.44 f 93.15 b 94.67 cd 95.98 b 103.13 ab 96.84 b
D4 97.20 de 91.00 e 107.24 a 101.25 ab 101.04 a 99.77 bc 102.12 a
D5 95.03 f 92.15 de 106.48 a 101.57 a 96.56 b 105.41 a 102.20 a
AVG 96.17 98.77 98.60 97.40 95.69 100.46 97.97
浙油50×
华航901
Zheyou 50×
Huahang 901 		D1 100.86 b 83.91 g 91.43 b 93.26 d 91.24 c 101.82 b 94.58 c
D2 102.82 a 102.97 b 86.24 c 84.69 e 85.22 d 93.39 d 87.58 e
D3 98.53 cd 97.92 c 71.66 f 76.77 f 79.96 e 88.85 e 79.50 g
D4 99.03 c 91.02 e 81.42 d 84.41 e 77.91 e 86.20 e 82.38 f
D5 97.98 cd 94.07 d 75.46 e 79.09 f 74.77 f 93.70 d 80.81 fg
AVG 99.84 93.98 81.24 83.64 81.82 92.79 84.97
2017 西宁
2017 Xining 		华航901
×浙油50
Huahang 901
×Zheyou 50 		D1 105.74 ef 140.05 a 113.01 e 112.93 d 94.91 e 82.70 g 100.14 f
D2 105.13 f 112.76 c 127.33 d 98.41 e 94.59 e 90.71 f 101.76 f
D3 104.55 f 103.91 e 110.25 e 96.01 e 89.06 f 95.17 e 97.41 g
D4 109.30 d 102.38 e 89.68 g 83.36 g 64.42 g 77.39 h 78.44 i
D5 114.91 c 109.62 cd 100.62 f 91.86 f 88.70 f 78.03 h 90.29 h
AVG 107.93 113.75 108.18 96.51 86.34 84.80 93.61
浙油50×
华航901
Zheyou 50×
Huahang 901 		D1 108.52 de 142.63 a 130.16 d 117.86 c 116.90 d 100.89 d 115.75 e
D2 113.16 c 141.32 a 144.54 b 123.31 b 136.30 b 132.32 b 133.43 c
D3 115.59 c 118.84 b 146.17 ab 141.80 a 140.66 a 143.17 a 142.85 a
D4 118.97 b 106.03 de 150.48 a 138.49 a 136.59 b 132.07 b 139.54 b
D5 123.35 a 79.73 f 136.22 c 113.59 d 121.00 c 112.33 c 120.82 d
AVG 115.92 117.71 141.52 127.01 130.29 124.16 130.48

图7

种植密度与实际产量和倒伏指数的拟合曲线(2017) 缩写同图1。**表示1%显著水平。 "

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