Crops ›› 2021, Vol. 37 ›› Issue (5): 79-86.doi: 10.16035/j.issn.1001-7283.2021.05.012

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Comparison of Tiller Characters of Sugarcane Varieties (Lines) in Different Sugarcane Regions and Their Effects on Yield and Yield Components

Li Jiahui(), Cheng Qin, Ou Kewei, Tan Qinliang, Pang Xinhua, Zhou Quanguang, Lü Ping, Song Qiqi, Tang Yuwei, Zhu Pengjin()   

  1. Guangxi Subtropical Crops Research Institute, Nanning 530001, Guangxi, China
  • Received:2020-12-08 Revised:2021-02-04 Online:2021-10-15 Published:2021-10-14
  • Contact: Zhu Pengjin E-mail:1558779830@qq.com;zhupengjin04@163.com

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Abstract:

The study was designed to understand the difference of tillering characters between sugarcane varieties (lines) and its influence on yield and yield components. The significance, correlation, coefficient of variation and path analysis of tiller agronomic characters and yield components of four different sugarcane varieties (lines) were carried out at five test sites in three sugarcane regions. The results showed that there were significant differences in tiller characters among sugarcane varieties (lines) in different sugarcane regions, and the tillering rate and the number of tillers played an important role in the production of available canes. Sugarcane varieties (lines) were divided into low-tillering sugarcane varieties (lines) (Xintaitang 22, Guitang 42) and high-tillering sugarcane varieties(lines) (Guire 2, Liangzhe 03-81). The highest correlation with the yield of high-tillering sugarcane varieties (lines) was available stem number (0.76**), while that of low-tillering sugarcane varieties (lines) was single stem weight (0.83**), and there was a significant positive correlation between tillering rate and available canes (0.64*, 0.68*). The number of available canes had the greatest direct path coefficients on the yield of the two types of sugarcane and the available canes were the main factors affecting the yield of sugarcane. The variation coefficients of tiller number and tillering rate were the highest, which had the high potential for improvement. In conclusion, the tillering of sugarcane could significantly increase the number of available canes and influence on sugarcane yield, and affect the relationship between sugarcane yield and yield components.

Key words: Sugarcane, Tillering, Available canes, Yield components

Table 1

Comparative analysis of tiller characters of sugarcane varieties (lines) in different sugarcane regions"

试验点
Test site		 品种（系）
Variety
(line)		 基本苗数
Basic shoots
(×103 stems/hm2)		 分蘖苗数
Tiller
(×103 stems/hm2)		 总苗数
Total shoots
(×103 stems/hm2)		 分蘖率
Tillering
rate (%)		 有效茎数
Available cane number
(×103 stems/hm2)		 成茎率
Stem rate
(%)
金光农场 桂热2号 59.51bB 53.31bB 112.82bA 89.57cC 85.76aA 76.01aAB
Jinguang farm 桂糖42号 66.72aA 36.77dD 103.48cB 55.11dD 66.23bB 64.00bC
凉蔗03-81 50.11cC 69.69aA 119.81aA 139.08aA 82.58aA 68.92bBC
新台糖22号 38.26dD 44.73cC 82.99dC 116.93bB 65.91bB 79.42aA
良圻农场 桂热2号 72.49aA 69.35bB 141.84bB 95.67bB 85.37aA 60.18aA
Liangqi farm 桂糖42号 66.56bA 43.98dD 110.53dD 66.08dD 57.57dD 52.09bB
凉蔗03-81 70.90abA 81.19aA 152.08aA 114.51aA 78.62bB 51.69bB
新台糖22号 68.85abA 57.59cC 126.43cC 83.64cC 68.21cC 53.95bAB
昌菱农场 桂热2号 68.76bAB 86.81aA 155.58aA 126.25aA 106.91aA 68.71aA
Changling farm 桂糖42号 63.30cB 61.22bB 124.52bB 96.72cC 61.79dD 49.62cC
凉蔗03-81 73.51aA 83.42aA 156.93aA 113.48bB 94.31bB 60.09bB
新台糖22号 73.24aA 75.79abA 149.03abA 103.48cB 69.95cC 44.74cC
柳兴农场 桂热2号 70.65aA 60.61bB 131.26bB 85.78bB 77.34bB 58.92cB
Liuxing farm 桂糖42号 68.56aA 45.33cC 113.89cC 66.12cC 57.72cC 50.68dC
凉蔗03-81 68.76aA 74.52aA 143.28aA 108.37aA 92.51aA 64.56bAB
新台糖22号 47.24bB 21.52dD 68.76dD 45.56dD 48.68dD 70.79aA
滨海农场 桂热2号 72.16aA 42.65aA 114.81aA 59.11aA 83.15aA 72.42aA
Binhai farm 桂糖42号 66.74bA 40.09aAB 106.83bAB 60.07aA 56.15cB 52.56bB
凉蔗03-81 68.35abA 35.55bBC 103.90bB 52.01aA 57.48cB 55.32bB
新台糖22号 53.70cB 29.89cC 83.59cC 55.67aA 61.14bB 73.14aA

Table 2

Average of tiller characters of sugarcane varieties (lines) in different sugarcane regions"

品种（系）
Variety (line)		 基本苗数
Basic shoots
(×103 stems/hm2)		 分蘖苗数
Tiller
(×103 stems/hm2)		 总苗数
Total shoots
(×103 stems/hm2)		 分蘖率
Tillering rate
(%)		 有效茎数
Available cane number
(×103 stems/hm2)		 成茎率
Stem rate
(%)
桂热2号Guire 2 68.71aA 62.55aA 131.27aA 91.28abAB 87.71aA 66.81aA
桂糖42号Guitang 42 66.38aA 45.48bB 111.86bB 68.82cB 59.90bB 53.55bA
凉蔗03-81 Liangzhe 03-81 66.33aA 68.88aA 135.21aA 105.49aA 81.09aA 60.06abA
新台糖22号Xintaitang 22 56.26aA 47.37bB 103.62bB 83.056bAB 62.78bB 61.51abA

Table 3

Comparative analysis of yield components of sugarcane varieties (lines) in different sugarcane regions"

试验点
Test site		 品种（系）
Variety (line)		 茎长
Stem length
(cm)		 茎径
Stem diameter
(cm)		 单茎重
Single stem
weight (kg)		 有效茎数
Available cane number
(×103 stems/hm2)		 理论产量
Theoretical
yield (t/hm2)
金光农场 桂热2号 262.00aA 2.54bcB 1.18bB 85.76aA 91.20aA
Jinguang farm 桂糖42号 257.00aA 2.74aA 1.35aA 66.23bB 80.58bB
凉蔗03-81 226.00bB 2.57bB 1.01cC 82.58aA 80.09bB
新台糖22 号 253.00aA 2.47cB 1.07cBC 65.91bB 73.37cC
良圻农场 桂热2号 329.00bA 2.47cB 1.43cC 85.37aA 99.02bB
Liangqi farm 桂糖42号 336.00abA 2.78aA 1.88aA 57.57dD 86.28cC
凉蔗03-81 307.00cB 2.69bA 1.57bB 78.62bB 106.32aA
新台糖22号 351.00aA 2.66bA 1.80aA 68.21cC 108.41aA
昌菱农场 桂热2号 278.00bAB 2.56bcB 1.28bB 106.91aA 103.44aA
Changling farm 桂糖42号 299.00aA 2.70aA 1.54aA 61.79dD 80.93bB
凉蔗03-81 259.00cB 2.60bAB 1.21bB 94.31bB 107.55aA
新台糖22号 286.00abA 2.50cB 1.25bB 69.95cC 74.93cB
柳兴农场 桂热2号 295.70aA 2.65cB 1.63bB 77.34bB 88.56bB
Liuxing farm 桂糖42号 299.30aA 2.87aA 1.38cC 57.72cC 72.39cC
凉蔗03-81 287.00aA 2.55dB 1.83aA 92.51aA 98.10aA
新台糖22号 290.00aA 2.77bA 1.06dD 48.68dD 61.56dD
滨海农场 桂热2号 254.00aA 2.59bB 1.18aA 83.15aA 85.67aA
Binhai farm 桂糖42号 245.00abA 2.64bAB 1.19aA 56.15cB 63.86bB
凉蔗03-81 234.00bA 2.75aA 1.21aA 57.48cB 64.80bB
新台糖22号 233.00bA 2.62bB 1.11aA 61.14bB 67.92bB

Table 4

Yield and its components of sugarcane varieties (lines) at different test sites"

品种（系）
Variety (line)		 茎长
Stem length
(cm)		 茎径
Stem diameter
(cm)		 单茎重
Single stem
weight (kg)		 有效茎数
Available cane number
(×103 stems/hm2)		 产量
Theoretical
yield (t/hm2)
桂热2号Guire 2 283.74aA 2.56aA 1.34aA 87.71aA 93.58aA
桂糖42号Guitang 42 287.26aA 2.75aA 1.47aA 59.90bB 76.81bB
凉蔗03-81 Liangzhe 03-81 262.60aA 2.63aA 1.37aA 81.09aA 91.37aA
新台糖22号Xintaitang 22 282.60aA 2.60aA 1.26aA 62.78bB 77.24bB

Fig.1

Comparative analysis of sucrose content of sugarcane varieties (lines) in different regions The different lowercase letters and capital letters indicate significant difference at 0.05 and 0.01 level, respectively"

Table 5

Variation coefficient analysis of tillering characters and yield components of sugarcane"

性状
Trait		 平均值
Average value		 标准差
Standard deviation		 变异系数
Variation coefficient (%)		 实际变幅
Actual range
基本苗数Basic shoots (×103 stems/hm2) 64.42 9.72 15.09 47.24~73.24
分蘖苗数Tiller (×103 stems/hm2) 56.07 19.61 34.99 21.52~86.81
总苗数Total shoots (×103 stems/hm2) 120.48 25.56 21.22 68.76~156.93
分蘖率Tillering rate (%) 87.16 28.35 32.53 45.56~126.25
有效茎数Available cane number (×103 stems/hm2) 72.87 15.43 21.18 48.68~106.91
茎长Stem length (cm) 279.05 35.26 12.64 233.00~351.00
茎径Stem diameter (cm) 2.64 0.11 4.17 2.47~2.87
单茎重Single stem weight (kg) 1.36 0.27 19.67 1.01~1.88
理论产量Theoretical yield (t/hm2) 84.75 15.26 18.00 61.56~108.41

Table 6

Correlation between tiller agronomic characters and yield components of high-tillering sugarcane varieties (lines)"

性状
Trait		 基本苗数
Basic
shoot		 分蘖苗数
Tiller		 总苗数
Total
shoots		 分蘖率
Tillering
rate		 有效茎数
Available
cane number		 茎长
Stem
length		 茎径
Stem
diameter		 单茎重
Single stem
weight		 理论产量
Theoretical
yield
基本苗数Basic shoots 1
分蘖苗数Tiller 0.08 1
总苗数Total shoots 0.45 0.93** 1
分蘖率Tillering rate -0.04 0.88** 0.64* 1
有效茎数Available cane number 0.06 0.74** 0.69* 0.64* 1
茎长Stem length 0.56 0.43 0.59 0.11 0.25 1
茎径Stem diameter 0.15 -0.34 -0.25 -0.38 -0.68* -0.32 1
单茎重Single stem weight 0.49 0.29 0.44 0.02 0.07 0.72* 0.02 1
理论产量Theoretical yield 0.40 0.85** 0.91** 0.57 0.76** 0.64* -0.43 0.39 1

Table 7

Correlation between tiller agronomic traits and yield components of low-tillering sugarcane varieties (lines)"

性状
Trait		 基本苗数
Basic
shoot		 分蘖苗数
Tiller		 总苗数
Total
shoots		 分蘖率
Tillering
rate		 有效茎数
Available
cane number		 茎长
Stem
length		 茎径
Stem
diameter		 单茎重
Single stem
weight		 理论产量
Theoretical
yield
基本苗数Basic shoot 1
分蘖苗数Tiller 0.55 1
总苗数Total shoots 0.82** 0.93** 1
分蘖率Tillering rate -0.05 0.79** 0.52 1
有效茎数Available cane number 0.28 0.70* 0.60 0.68* 1
茎长Stem length 0.41 0.36 0.43 0.11 0.04 1
茎径Stem diameter 0.30 -0.42 -0.16 -0.71* -0.59 0.39 1
单茎重Single stem weight 0.58 0.34 0.49 0.04 0.20 0.84** 0.38 1
理论产量Theoretical yield 0.41 0.48 0.47 0.30 0.57 0.74* 0.04 0.83** 1

Table 8

Path analysis of yield and its components of high-tillering sugarcane varieties (lines)"

性状
Trait		 直接通径系数
Direct path coefficient		 间接通径系数Indirect path coefficient 相关系数
Correlation coefficient
X1→Y X2→Y X3→Y X4→Y
茎长Stem length (X1) 0.6519 -0.1188 -0.1087 0.2134 0.6378
茎径Stem diameter (X2) 0.3691 -0.2099 -0.0028 -0.5860 -0.4296
单茎重Single stem weight (X3) -0.1513 0.4682 0.0068 0.0623 0.3860
有效茎数Available cane number (X4) 0.8603 0.1617 -0.2514 -0.0110 0.7596

Table 9

Path analysis of yield and yield components of low-tillering sugarcane varieties (lines)"

性状
Trait		 直接通径系数
Direct path coefficient		 间接通径系数Indirect path coefficient 相关系数
Correlation coefficient
X1→Y X2→Y X3→Y X4→Y
茎长Stem length (X1) 0.3320 0.0043 0.3831 0.0198 0.7392
茎径Stem diameter (X2) 0.0111 0.1283 0.1735 -0.2775 0.0354
单茎重Single stem weight (X3) 0.4548 0.2797 0.0042 0.0948 0.8335
有效茎数Available cane number (X4) 0.4681 0.0140 -0.0066 0.0922 0.5677
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