Crops ›› 2016, Vol. 32 ›› Issue (1): 144-148.doi: 10.16035/j.issn.1001-7283.2016.01.027

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Effect of Planting Density on the Sink and Source Relationship of Hybrid Waxy Sorghum

Liu Tianpeng,Ding Guoxiang,Wang Xiaokai,Ni Xianlin,Long Wenjing,Hu Jiongling,Zhao Ganlin   

  1. Rice and Sorghun Institute, Sichuan Academy of Agricultural Sciences, Luzhou 646000, Sichuan, China
  • Received:2015-10-13 Revised:2015-12-14 Online:2016-02-15 Published:2018-08-25
  • Contact: Ganlin Zhao

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Abstract:

A split-plot experiment design is used in this study, that the density is given priority to set 4 densities (90000 plants/hm 2, 105000 plants/hm 2, 120000 plants/hm 2, 135000 plants/hm 2), and three hybrid waxy sorghum varieties are set as deputy district, with a total of 12 treatments, each 14m 2 of plot area, and 3 repeats. Effect of planting density on the sink and source relationship of hybrid waxy sorghum is studied. The research results showed that the leaf area index of every growth period and the source production capacity are significantly correlated with density, and increasing planting density is the key to a higher source. Increase of the density can increase the effective sink storage capacity to a certain extent. Therefore, reasonable density is the key measure to realize coordination of the library source. At high densities, to increase grain number per ear is the key measure to further improve effective sink storage capacity. Selection of varieties with strong source and large sink, increasing planting density reasonably are an effective way for the production of hybrid waxy sorghum in the southeastern Sichuan.

Key words: Planting density, Waxy sorghum, Rlationship of sink and source

Fig.1

Effect of density on leaf area index of hybrid glutinous sorghum"

Table 1

Effect of density on the production capacity of hybrid glutinous sorghum"

品种
Hybrids		 密度
（万株/hm2）
Planting
density		 全生育期源
生产能力（t/hm2）
Dry matter production
capacity in the whole growth period		 开花前源
生产能力
（t/hm2）
Dry matter production
capacity before heading		 开花后源
生产能力
（t/hm2）
Dry matter production
capacity after heading		 开花后源生产能力/
全生育期源生产能力（%）
Dry matter production capacity after heading/Dry matter production capacity in the whole growth period
川糯粱1号
Chuannuoliang 1		 9.0 11.79d 5.733d 6.058c 51.38a
10.5 12.61c 6.276c 6.337c 50.25ab
12.0 13.99b 7.207b 6.788b 48.52b
13.5 15.04a 7.852a 7.188a 47.79b
泸糯12号
Lunuo 12		 9.0 14.04d 6.975c 7.063c 50.31a
10.5 15.96c 8.012b 7.955b 49.84ab
12.0 17.65b 8.995a 8.653a 48.97ab
13.5 18.52a 9.228a 8.775a 47.29b
泸糯8号
Lunuo 8		 9.0 14.99d 7.472d 7.522d 50.18a
10.5 17.07c 8.376c 8.394c 49.17a
12.0 18.58b 9.489b 8.953b 48.65a
13.5 19.87a 10.250a 9.627a 48.28a

Table 2

Effect of density on the characteristics of single plant in hybrid glutinous sorghum"

品种
Hybrids		 密度
（万株/hm2）dencity		 总小花个数（个/穗）
Total number of floret		 结实粒数（粒/穗）
Bearingnumber		 穗粒重（g/穗）
Ear grain		 结实率（%）
Seedsetting rate
川糯粱1号 9.0 3 535.6a 3 103.9a 66.92a 87.79a
Chuannuoliang 1 10.5 3 341.1b 2 913.1b 62.57b 87.19a
12.0 3 139.0c 2 761.3c 59.53c 87.96a
13.5 2 942.5d 2 466.2d 54.26d 83.81b
泸糯12号 9.0 3 388.4a 3 212.0a 76.19a 94.79a
Lunuo 12 10.5 3 280.0a 3 076.0b 74.22a 93.78a
12.0 2 996.7b 2 749.0c 66.91b 91.73ab
13.5 2 721.0c 2 398.0d 58.17c 88.13b
泸糯8号 9.0 3 607.1a 3 391.3a 80.11a 94.02a
Lunuo 8 10.5 3 353.9b 3 128.4b 76.22b 93.47ab
12.0 3 080.4c 2 848.3c 69.28c 92.62ab
13.5 2 823.2d 2 490.3d 59.47d 90.82b

Table 3

Effect of density on the characteristics of the population in hybrid glutinous sorghum"

品种
Hybrids		 密度(万株/hm2)
Density		 总粒数(万粒/hm2)
Total grain number		 千粒重(g)
1000-grain weight		 最大潜在库容量(t/hm2)
Potential sink storage capacity		 有效库容量(t/hm2)
Effective sink storage capacity
川糯粱1号 9.0 27 935.1c 21.56a 6.549d 6.023c
Chuannuoliang 1 10.5 30 586.5b 21.48a 7.711c 6.570b
12.0 33 132.3a 21.56a 8.310b 7.143a
13.5 33 293.7a 21.51a 8.938a 7.205a
泸糯12号 9.0 28 908.0c 23.72a 7.386d 6.857c
Lunuo 12 10.5 32 297.8b 24.13a 8.483c 7.794b
12.0 32 988.1a 24.34a 8.843b 8.029a
13.5 32 103.3b 24.26a 9.205a 7.789b
泸糯8号 9.0 30 521.7c 23.62a 7.968c 7.209c
Lunuo 8 10.5 32 848.2b 23.61a 9.044b 8.003b
12.0 34 179.6a 23.52a 9.467a 8.314a
13.5 34 712.5a 23.13a 9.333a 8.029b

Table 4

The effect of density on sink-source relationship of hybrid glutinous sorghum"

品种
Hybrids		 密度(万株/hm2)
density		 产量(t/hm2)
Yield		 开花后源生产能力的转化率(%)
Conversion rate of leaf sourse productive capacity after heading		 粒叶比(粒/cm2)
ratio Economic		 经济系数
Grain-leaf coefficient
川糯粱1号
Chuannuoliang 1		 9.0 5.463c 90.18ab 1.02a 41.70a
10.5 5.815b 91.76ab 0.96b 41.50a
12.0 6.270a 92.37a 0.93c 40.34b
13.5 6.392a 88.93b 0.86d 38.25c
泸糯12号
Lunuo 12		 9.0 6.045c 88.90a 0.95a 39.57a
10.5 6.678b 86.11a 0.93a 38.63b
12.0 7.168a 87.92a 0.80b 38.75b
13.5 6.554b 79.20b 0.74dc 34.70c
泸糯8号
Lunuo 8		 9.0 6.492c 88.66a 0.96a 39.51a
10.5 7.251b 88.49a 0.95a 39.38a
12.0 7.505a 86.75b 0.83b 38.51b
13.5 7.288ab 83.48c 0.76c 36.28c

Table 5

Correlation coefficient between the components of sink and source"

密度
Density		 有效库容量
Effective sink
storage capacity		 千粒重
1000-grain weight		 穗粒数
Grain number
per ear		 粒叶比
Ratio
economic
叶面积指数 开花期Flowering stage 0.90** 0.82** 0.52 -0.76** -0.97**
Leaf area index 成熟期Mature stage 0.85** 0.88** 0.57* -0.67* -0.94**
源生产能力 全生育期Full growth period 0.61* 0.95** 0.79** -0.39 -0.80**
Productive capacity 开花前Before flowering 0.69** 0.96** 0.74** -0.47 -0.85**
of leaf source 开花后After flowering 0.57* 0.94** 0.81** -0.27 -0.73**
产量构成因素 最大潜在库容量Maximum potential sink capacity 0.84** 0.93** 0.63* -0.67* -0.85**
Yield components 有效库容量Effective reservoir capacity 0.61* 1.00 0.80** -0.38 -0.74**
穗粒数Grain number per spike -0.94** -0.38 0.37 1.00 0.83**
千粒重Thousand-grain weight 0.25 0.80** 1.00 -0.15 -0.50
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