Crops ›› 2026, Vol. 42 ›› Issue (1): 94-103.doi: 10.16035/j.issn.1001-7283.2026.01.012

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Comprehensive Evaluation of Reciprocal Cross Hybrids between 57NG208 and Nanjian Chewing Cane Based on Agronomic Traits

Yu Huaxian1,2(), An Rudong1,2(), Tao Lianan1,2, Lang Rongbin1,2, Bian Xin1,2, Zhang Yu1,2, Liu Xinlong1,2, Liu Jiayong1,2(), Zhao Liping1,2, Liu Hongbo1,2, Zhang Gemin3, Zhang Baoqing3   

  1. 1National Key Laboratory for Biological Breeding of Tropical Crops, Kunming 650205, Yunnan, China
    2Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, Yunnan, China
    3Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences / Guangxi Key Laboratory of Sugarcane Genetic Improvement, Nanning 530000, Guangxi, China
  • Received:2024-10-27 Revised:2024-12-31 Online:2026-02-15 Published:2026-02-10

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Abstract:

A total of 24 progenies from Saccharum robustum L. and Nanjian chewing cane through reciprocal crosses were used. Correlation analysis, principal component analysis, cluster analysis, and comprehensive evaluation associated with seven important agronomic traits were performed. The results showed that there were differences in agronomic traits among different germplasm materials in the same planting period experiment, and there were differences in agronomic traits among different planting period experiment in the same germplasm materials. The variation coefficient of agronomic traits ranged from 11.17% to 43.37%. The variation of sugar yield and sugarcane stalk yield was the largest, which was 43.37% and 42.20%, respectively, the variation of plant height was small. The correlation analysis showed that sugarcane stalk yield and sugar yield were significantly positively correlated with single stalk weight and effective stalk number, respectively, and sugarcane stalk yield was significantly positively correlated with sugar yield. The yield-sugar factor, stalk diameter-sugar factor and stalk diameter-quality factor were extracted via principal component analysis, and the cumulative contribution rate was 81.39%. The results of cluster analysis showed that the 24 germplasm materials were divided into three groups at the Euclidean distance of 6.00, which were basically consistent with the results of principal component scores. Among them, the seven agronomic indexes of group III were excellent, with high yield and high sugar. Yunrui 12-38-27, Yunrui 12-38-18, Yunrui 12-9-45, Yunrui 12-9-9 and Yunrui 12-38-29 ranked top five based on their comprehensive evaluation D values.

Key words: Saccharum robustum L., Nanjian chewing cane, Agronomic traits, Principal component analysis, Membership function method, Comprehensive evaluation

Table 1

Parental information of germplasm materials"

编号Number 材料名称Material name 母本Female 父本Male
YR12-9-45 云瑞12-9-45 57NG208 南涧果蔗
YR12-9-4 云瑞12-9-4 57NG208 南涧果蔗
YR12-9-5 云瑞12-9-5 57NG208 南涧果蔗
YR12-9-6 云瑞12-9-6 57NG208 南涧果蔗
YR12-9-7 云瑞12-9-7 57NG208 南涧果蔗
YR12-9-8 云瑞12-9-8 57NG208 南涧果蔗
YR12-9-9 云瑞12-9-9 57NG208 南涧果蔗
YR12-9-10 云瑞12-9-10 57NG208 南涧果蔗
YR12-9-1 云瑞12-9-1 57NG208 南涧果蔗
YR12-38-29 云瑞12-38-29 南涧果蔗 57NG208
YR12-38-30 云瑞12-38-30 南涧果蔗 57NG208
YR12-38-31 云瑞12-38-31 南涧果蔗 57NG208
YR12-38-32 云瑞12-38-32 南涧果蔗 57NG208
YR12-38-34 云瑞12-38-34 南涧果蔗 57NG208
YR12-38-48 云瑞12-38-48 南涧果蔗 57NG208
YR12-38-47 云瑞12-38-47 南涧果蔗 57NG208
YR12-38-46 云瑞12-38-46 南涧果蔗 57NG208
YR12-38-45 云瑞12-38-45 南涧果蔗 57NG208
YR12-38-43 云瑞12-38-43 南涧果蔗 57NG208
YR12-38-42 云瑞12-38-42 南涧果蔗 57NG208
YR12-38-40 云瑞12-38-40 南涧果蔗 57NG208
YR12-38-27 云瑞12-38-27 南涧果蔗 57NG208
YR12-38-19 云瑞12-38-19 南涧果蔗 57NG208
YR12-38-18 云瑞12-38-18 南涧果蔗 57NG208

Table 2

Performance of agronomic traits of 24 germplasm materials in the first year"

编号
Number		 株高
Plant
height
(cm)		 茎径
Stalk
diameter
(cm)		 锤度
Brix
(%)		 单茎重
Single stalk
weight (kg)		 有效茎数
（×103条/hm2）
Effective stalk
number
(×103 stalk/hm2)		 蔗茎产量
Sugarcane
stalk yield
(t/hm2)		 糖产量
Sugar
yield
(t/hm2)
YR12-9-45 372.0abcAB 2.4abcdefABCDE 18.0cdefghCDEFG 1.7abcAB 82.0defgDEFGH 138.0bcdefABCDE 17.1cdefgBCDEFGH
YR12-9-4 285.0fghiBCDE 2.0efghijCDEF 14.3lI 0.9defBC 60.2hijHIJK 51.1hiEF 4.5hiHI
YR12-9-5 298.0defghABCDE 2.3abcdefgABCDE 24.5aA 1.3bcdefABC 77.3efghDEFGHI 98.8efghiCDEF 18.9bcdeBCDE
YR12-9-6 307.0bcdefghABCDE 2.7abcABC 17.8cdefghCDEFGH 1.7abAB 44.6jJK 76.0efghiEF 9.4efghiDEFGHI
YR12-9-7 295.0efghABCDE 1.6ijF 15.7hijklFGHI 0.6fC 92.3deCDEFG 53.2hiEF 5.5hiFGHI
YR12-9-8 290.0efghiABCDE 2.4abcdeABCDE 18.7bcdefgCDEF 1.3bcdeABC 95.5cdeCDEF 130.1cdefgABCDE 17.3cdefBCDEFGH
YR12-9-9 383.0aA 2.2bcdefghABCDEF 18.9bcdefgCDE 1.4abcdABC 145.5aA 205.4abAB 27.8abAB
YR12-9-10 255.0hiDE 2.2bcdefghABCDEF 19.2bcdefCDE 1.0cdefBC 72.7fghiEFGHI 69.5fghiEF 9.5efghiDEFGHI
YR12-9-1 255.0hiDE 2.5abcdeABCDE 19.5bcdeCDE 1.2bcdefABC 55.9ijIJK 66.3fghiEF 9.4efghiDEFGHI
YR12-38-29 338.0abcdefgABCD 2.9aA 17.3efghiDEFGHI 2.2aA 87.60defgCDEFG 190.1abcABC 22.7abcABC
YR12-38-30 359.0abcdeABC 1.8ghijDEF 19.0bcdefgCDE 1.0cdefBC 95.5cdeCDEF 88.4efghiDEF 11.8defghiCDEFGHI
YR12-38-31 368.0abcdAB 2.1cdefghiBCDEF 18.1bcdefgCDEFG 1.3bcdefABC 86.4defgDEFG 109.2defghBCDEF 13.8cdefghCDEFGHI
YR12-38-32 378.0abAB 2.0defghijBCDEF 20.4bBC 1.2bcdefABC 97.4cdCDE 122.5cdefghABCDEF 18.0cdefBCDEF
YR12-38-34 296.0efghABCDE 1.9fghijDEF 14.9jklHI 0.8defBC 68.7ghiGHIJ 51.7hi 4.8hiGHI
YR12-38-48 291.0efghiABCDE 2.2bcdefghABCDEF 22.8aAB 1.1bcdefBC 111.8bcBC 121.1EF 21.0bcdABCD
YR12-38-47 301.0cdefghABCDE 2.4abcdefABCDE 17.1fghijDEFGHI 1.5abcdABC 43.3jK 65.6fghiEF 6.4hiEFGHI
YR12-38-46 358.0abcdeABC 2.3abcdefgABCDE 20.0bcBCD 1.6abcAB 85.7defgDEFG 150.4abcdeABCDE 21.6bcABCD
YR12-38-45 255.0hiDE 1.7hijEF 16.7ghijkEFGHI 0.6efC 100.0cdCD 57.9ghiEF 6.4hiEFGHI
YR12-38-43 325.0abcdefghABCD 1.5jF 17.6defghiCDEFGH 0.6efC 41.7jK 24.4iF 3.0iI
YR12-38-42 310.0bcdefghABCDE 2.1cdefghiBCDEF 14.9jklHI 1.1bcdefBC 86.8defgCDEFG 92.4efghiCDEF 8.7fghiDEFGHI
YR12-38-40 222.0iE 2.8aAB 19.9bcdBCD 1.3bcdefABC 71.2ghiFGHI 93.9efghiCDEF 13.2cdefghCDEFGHI
YR12-38-27 343.0abcdefABCD 2.5abcdeABCD 19.9bcdBCD 1.7abAB 126.6abAB 219.9aA 31.9aA
YR12-38-19 271.0ghiCDE 2.1defghijBCDEF 14.4klI 0.9cdefBC 91.5defCDEFG 85.1efghiDEF 7.5ghiEFGHI
YR12-38-18 285.0fghiBCDE 2.7abAB 15.4ijklGHI 1.7abAB 100.1cdCD 177.0abcdABCD 17.8cdefBCDEFG

Table 3

Performance of agronomic traits of 24 germplasm materials in the second year"

编号
Number		 株高
Plant height
(cm)		 茎径
Stalk diameter
(cm)		 锤度
Brix (%)		 单茎重
Single stalk
weight
(kg)		 有效茎数
（×103条/hm2）
Effective stalk
number
(×103 stalk/hm2)		 蔗茎产量
Sugarcane
stalk yield
(t/hm2)		 糖产量
Sugar yield
(t/hm2)
YR12-9-45 368.0abAB 2.5cdefgBCDE 18.6defghCDEFGH 1.8bcBC 55.6fghiEFG 103.0bcdeCDEFG 13.6bcdeCDEF
YR12-9-4 342.0abcdeABCD 1.6klGH 14.9lJ 0.7hijFG 71.3defghCDEFG 49.6ghiFG 4.6gG
YR12-9-5 272.0ghDEFG 2.7bcBC 24.3aA 1.6bcdeBCD 68.9efghCDEFG 105.4bcdeCDEFG 20.0abABC
YR12-9-6 315.0bcdefgABCDEF 2.6bcdeBCD 16.0jklIJ 1.7bcdBCD 71.8defgCDEFG 127.7bBCD 13.6bcdeCDEF
YR12-9-7 302.0cdefgBCDEF 2.3cdefghCDEF 19.6bcdefCDEF 1.3cdefghCDEFG 70.9defghCDEFG 87.3bcdefghiCDEFG 12.4cdefCDEFG
YR12-9-8 315.0bcdefgABCDEF 1.6jklGH 19.8bcdeCDE 0.6ijG 18.8cdeCDE 52.2fghiEFG 7.5efgEFG
YR12-9-9 345.0abcdeABCD 1.7ijklFGH 18.4defghCDEFGHI 0.8hijEFG 168.2aA 132.2bBC 17.2bcABCD
YR12-9-10 295.0defghBCDEF 3.1abAB 18.8cdefgCDEFGH 2.1bAB 56.5fghiEFG 117.8bcCDE 15.8bcdBCDE
YR12-9-1 264.0ghiEFG 2.2efghCDEFG 19.2bcdefCDEFG 1.0efghijCDEFG 44.9iG 44.9hiG 6.2fgFG
YR12-38-29 349.0abcdABC 2.1fghiCDEFGH 17.9fghiEFGHI 1.2cdefghiCDEFG 76.1cdefCDEF 91.9bcdefghCDEFG 11.4cdefCDEFG
YR12-38-30 352.0abcABC 2.0ghijkDEFGH 18.2defghiDEFGHI 1.2defghijCDEFG 82.7cdeCDE 98.5bcdefgCDEFG 12.5cdefCDEFG
YR12-38-31 314.0bcdefgABCDEF 2.3cdefghCDEF 19.1bcdefCDEFG 1.3cdefghCDEFG 81.8cdeCDE 100.4bcdefCDEFG 13.7bcdeCDEF
YR12-38-32 349.0abcdABC 2.1fghiCDEFGH 19.8bcdeCDE 1.2cdefghiCDEFG 91.5cdBCD 112.3bcdCDEF 16.11bcdBCDE
YR12-38-34 300.0cdefgBCDEF 2.5cdefBCD 16.8hijkGHIJ 1.5cdefgBCDEF 50.6ghiFG 73.5cdefghiCDEFG 8.5efgDEFG
YR12-38-48 244.0hiFG 2.4cdefgCDE 20.5bcBCD 1.1efghijCDEFG 94.9bcBC 106.4bcdeCDEFG 15.9bcdBCDE
YR12-38-47 280.0fghCDEFG 2.1fghijCDEFGH 16.5ijklHIJ 1.0fghijDEFG 56.6fghiEFG 52.5fghiEFG 5.8fgFG
YR12-38-46 299.0cdefghBCDEF 2.3cdefghCDEF 19.4bcdefCDEF 1.2cdefghiCDEFG 81.3bcBC 99.5bcdefgCDEFG 13.8bcdeCDEF
YR12-38-45 293.0efghCDEF 2.2defghCDEFG 20.0bcdCDE 1.2defghiCDEFG 82.8cdeCDE 95.2bcdeCDEFG 14.0bcdeCDEF
YR12-38-43 304.0cdefgBCDEF 1.5lH 20.8bBC 0.6jG 64.0efghiDEFG 40.4iG 6.2fgFG
YR12-38-42 293.0efghCDEF 2.1fghiCDEFGH 15.2klJ 1.0efghijCDEFG 77.9cdefCDEF 82.1bcdefghiCDEFG 7.9efgEFG
YR12-38-40 210.0iG 2.7bcdBC 22.7aAB 1.2defghijCDEFG 48.9hiFG 56.5efghiEFG 9.7defgDEFG
YR12-38-27 380.0aA 2.3cdefghCDEF 18.4defghCDEFGHI 1.6bcdefBCDE 117.4bB 187.7aAB 24.4aAB
YR12-38-19 331.0abcdefABCDE 1.9hijklEFGH 18.1efghiDEFGHI 1.0ghijDEFG 68.6efghCDEFG 63.1defghiDEFG 8.1efgEFG
YR12-38-18 304.0cdefgBCDEF 3.4aA 17.2ghijFGHIJ 2.8aA 81.2cdeCDE 218.6aA 25.8aA

Table 4

Performance of agronomic traits of 24 germplasm materials in ratooning"

编号
Number		 株高
Plant height
(cm)		 茎径
Stalk diameter
(cm)		 锤度
Brix (%)		 单茎重
Single stalk
weight
(kg)		 有效茎数
（×103条/hm2）
Effective stalk
number
(×103 stalk/hm2)		 蔗茎产量
Sugarcane
stalk yield
(t/hm2)		 糖产量
Sugar yield
(t/hm2)
YR12-9-45 380.0abcABC 2.5abcABC 18.9cdefCDEFG 1.9abABC 71.0efghCDEFGH 132.1cdeBCDE 17.8bcdBCD
YR12-9-4 336.0abcdefABCDEFG 1.8fgEF 17.8efghEFGH 0.9fghijEFGH 44.9ijGH 40.2hiG 5.0ghEF
YR12-9-5 299.0defghDEFGH 2.3bcdeABCDE 24.2aA 1.2cdefgCDEFGH 54.6fghijFGH 69.1fghiEFG 13.0defgCDEF
YR12-9-6 323.0bcdefgABCDEFGH 2.4bcdABCD 17.1ghiFGHI 1.5bcdABCDE 57.7fghijDEFGH 84.4efghiCDEFG 9.9defghDEF
YR12-9-7 305.0defghBCDEFGH 1.8fgEF 19.6bcdCDE 0.8ghijFGH 76.0cdefCDEFG 63.1fghiEFG 8.9efghDEF
YR12-9-8 308.0defghBCDEFGH 1.8fgEF 19.3cdeCDEF 0.8fghijFGH 87.8bcdeBCDE 71.0fghiEFG 9.8defghDEF
YR12-9-9 382.0abAB 2.6abAB 17.4fghiEFGH 2.0aAB 177.3aA 249.5aA 30.4aA
YR12-9-10 284.0fghFGH 2.5abcABC 18.9cdefCDEFG 1.4bcdeBCDEF 50.5ghijGH 73.7fghiDEFG 9.9defghDEF
YR12-9-1 255.0hH 2.6cdefBCDEF 19.1cdeCDEFG 0.9fghijEFGH 47.6hijGH 46.2hiFG 6.2ghDEF
YR12-38-29 358.0abcdABCDEF 2.4bcdABCD 19.2cdeCDEF 1.6abcABCD 72.8defgCDEFGH 114.8cdefCDEF 15.8cdefBCDE
YR12-38-30 389.0aA 1.8fgEF 18.6defgDEFG 1.0defghijDEFGH 100.5bcBC 103.6cdefgCDEFG 13.7defgBCDEF
YR12-38-31 302.0defghCDEFGH 2.2cdefBCDEF 18.1defghDEFG 1.1defghiDEFGH 69.6efghiCDEFGH 81.5efghiDEFG 10.3defghDEF
YR12-38-32 321.0cdefgABCDEFGH 2.0efgCDEF 18.5defghDEFG 1.0efghijEFGH 94.0bcdeBC 91.2defghCDEFG 12.0defgCDEF
YR12-38-34 295.0efghEFGH 2.2cdefBCDEF 15.8ijHIJ 1.1defghiDEFGH 74.6defgCDEFG 84.8efghiCDEFG 8.8efghDEF
YR12-38-48 285.0fghFGH 1.7gF 23.0aAB 0.6jH 90.0bcdeBCD 56.3ghiFG 9.9defghDEF
YR12-38-47 274.0ghGH 1.9efgDEF 15.0jIJ 0.8hijGH 40.9jH 30.0iG 2.9hF
YR12-38-46 373.0abcABCDE 2.5abcABC 24.0aA 1.8abABC 72.0defghCDEFGH 133.5cdeBCDE 24.8bB
YR12-38-45 378.0abcABCD 2.6abAB 20.3bcCD 2.1aA 77.4efghCDEFGH 156.4bcBC 23.4bcBC
YR12-38-43 345.0abcdeABCDEFG 2.1defgCDEF 21.0bBC 1.2cdefghDEFGH 72.8defgCDEFGH 83.9efghiCDEFG 13.3defgBCDEF
YR12-38-42 330.0abcdefgABCDEFGH 2.8aA 14.2jJ 2.1aA 96.0bcdBC 196.5bB 17.2bcdeBCD
YR12-38-40 308.0defghBCDEFGH 2.3bcdeABCDE 14.9jIJ 1.3cdefCDEFG 55.3fghijEFGH 72.8fghiDEFG 7.4fghDEF
YR12-38-27 305.0defghBCDEFGH 2.3bcdeABCDE 16.9hiGHI 1.3cdefgCDEFG 110.1bB 144.8bcdBCD 16.4bcdeBCDE
YR12-38-19 301.0defghCDEFGH 1.7gF 18.8cdefCDEFG 0.7ijGH 100.3bcBC 67.7fghiEFG 9.1defghDEF
YR12-38-18 325.0bcdefgABCDEFGH 2.0defgCDEF 18.0defghEFGH 1.1defghijDEFGH 86.7bcdeBCDEF 89.5efghCDEFG 11.3defghDEF

Table 5

Performance of seven agronomic trait indicators in the tested materials"

性状Trait 最大值Max. 最小值Min. 均值Mean 标准差SD 变异系数CV (%)
株高Plant height (cm) 373.3 246.7 314.2 34.14 10.87
茎径Stalk diameter (cm) 2.7 1.7 2.2 0.27 12.07
锤度Brix (%) 24.2 14.8 18.5 2.07 11.17
单茎重Single stalk weight (kg) 1.8 0.7 1.2 0.30 24.51
有效茎数（×103条/hm2）Effective stalk number (×103 stalk/hm2) 163.6 46.9 79.8 24873.37 31.17
蔗茎产量Sugarcane stalk yield (t/hm2) 219.7 43.4 98.5 41.56 42.20
糖产量Sugar yield (t/hm2) 28.2 5.1 12.9 5.59 43.37

Table 6

Correlation of main agronomic traits of tested materials"

性状
Trait		 株高
Plant
height		 茎径
Stalk
diameter		 锤度
Brix		 单茎重
Single stalk
weight		 有效茎数
Effective
stalk number		 蔗茎产量
Sugarcane
stalk yield		 糖产量
Sugar
yield
株高Plant height 1.00 -0.17 -0.10 0.30 0.52** 0.57** 0.52**
茎径Stalk diameter 1.00 0.00 0.89** -0.12 0.40 0.36
锤度Brix 1.00 -0.05 0.07 -0.01 0.33
单茎重Single stalk weight 1.00 0.11 0.64** 0.58**
有效茎数Effective stalk number 1.00 0.83** 0.80**
蔗茎产量Sugarcane stalk yield 1.00 0.94**
糖产量Sugar yield 1.00

Table 7

Eigenvalues, contribution rates and cumulative contribution rates of the tested materials"

性状Trait PC1 PC2 PC3
株高Plant height 0.33 -0.30 -0.12
茎径Stalk diameter 0.22 0.61 0.30
锤度Brix 0.02 0.14 -0.39
单茎重Single stalk weight 0.35 0.47 0.21
有效茎数Effective stalk number 0.37 -0.26 -0.36
蔗茎产量Sugarcane stalk yield 0.48 0.06 -0.16
糖产量Sugar yield 0.46 0.09 -0.28
特征值Eigenvalue 3.87 1.80 1.65
贡献率Contribution rate 43.02 20.04 18.33
累计贡献率Cumulative contribution rate 43.02 63.06 81.39

Table 8

PC, Z(Xj), D value, and comprehensive evaluation results of the tested germplasms"

编号Number 材料名称Material name PC1 PC2 PC3 Z(X1) Z(X2) Z(X3) D 排序Order
YR12-9-45 云瑞12-9-45 2.071 0.624 0.892 0.639 0.648 0.706 0.656 3
YR12-9-4 云瑞12-9-4 -1.881 -0.998 0.652 0.139 0.351 0.662 0.309 19
YR12-9-5 云瑞12-9-5 0.455 1.175 -0.160 0.435 0.749 0.512 0.530 10
YR12-9-6 云瑞12-9-6 -0.056 1.696 1.043 0.370 0.845 0.734 0.569 7
YR12-9-7 云瑞12-9-7 -2.398 -0.348 -1.785 0.074 0.471 0.212 0.203 23
YR12-9-8 云瑞12-9-8 -0.462 -1.718 0.212 0.319 0.220 0.581 0.353 18
YR12-9-9 云瑞12-9-9 4.923 -1.397 -1.887 1.000 0.278 0.193 0.641 4
YR12-9-10 云瑞12-9-10 -0.805 2.263 0.103 0.275 0.949 0.560 0.505 11
YR12-9-1 云瑞12-9-1 -2.981 1.588 -0.596 0.000 0.825 0.432 0.300 20
YR12-38-29 云瑞12-38-29 1.373 1.307 -0.251 0.551 0.774 0.495 0.593 5
YR12-38-30 云瑞12-38-30 0.958 -2.917 0.791 0.498 0.000 0.688 0.418 14
YR12-38-31 云瑞12-38-31 0.183 -0.459 0.232 0.400 0.450 0.584 0.454 13
YR12-38-32 云瑞12-38-32 0.203 -0.406 -1.669 0.403 0.460 0.234 0.379 16
YR12-38-34 云瑞12-38-34 -1.307 -0.337 1.147 0.212 0.472 0.753 0.398 15
YR12-38-48 云瑞12-38-48 -1.286 0.817 -2.935 0.215 0.684 0.000 0.282 21
YR12-38-47 云瑞12-38-47 -2.176 -0.491 1.703 0.102 0.444 0.856 0.356 17
YR12-38-46 云瑞12-38-46 1.441 0.535 -0.511 0.560 0.632 0.447 0.552 9
YR12-38-45 云瑞12-38-45 0.350 -0.616 0.378 0.421 0.421 0.611 0.464 12
YR12-38-43 云瑞12-38-43 -2.845 -1.362 -1.210 0.017 0.285 0.318 0.151 24
YR12-38-42 云瑞12-38-42 0.901 -0.541 1.955 0.491 0.435 0.902 0.570 6
YR12-38-40 云瑞12-38-40 -0.347 0.691 2.485 0.333 0.661 1.000 0.564 8
YR12-38-27 云瑞12-38-27 3.657 -0.357 -0.002 0.840 0.469 0.541 0.681 1
YR12-38-19 云瑞12-38-19 -1.676 -1.295 -0.445 0.165 0.297 0.459 0.264 22
YR12-38-18 云瑞12-38-18 1.705 2.544 -0.141 0.593 1.000 0.516 0.676 2

Fig.1

Cluster diagram of 24 germplasms and their reciprocal offsprings"

Table 9

Cluster groups and their trait"

性状
Trait		 类群Group
Ⅰ (n=6; 25.00%) Ⅱ (n=9; 37.50%) Ⅲ (n=9; 37.50%)
平均值
Mean value		 变异系数
CV (%)		 平均值
Mean value		 变异系数
CV (%)		 平均值
Mean value		 变异系数
CV (%)
株高Plant height (cm) 301.2aA 11.02 314.4aA 12.28 322.3aA 9.43
茎径Stalk diameter (cm) 2.0bB 10.21 2.2bB 9.94 2.4aA 7.54
锤度Brix (%) 19.4aA 8.64 17.3aA 9.80 19.1aA 11.93
单茎重Single stalk weight (kg) 0.9cB 16.54 1.1bB 14.59 1.5aA 12.31
有效茎数（×103条/hm2）
Effective stalk number (×103 stems/hm2)		 781.2aA
 25.20
 82.2aA
 41.88
 89.0aA
 37.48
蔗茎产量Sugarcane stalk yield (t/hm2) 72.1bA 33.31 95.4abA 53.48 130.0aA 35.37
糖产量Sugar yield (t/hm2) 10.2bA 39.97 11.5bA 59.02 17.5aA 31.50
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