Crops ›› 2017, Vol. 33 ›› Issue (5): 31-37.doi: 10.16035/j.issn.1001-7283.2017.05.006

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Comparative Analysis of Trait Correlation between Conventional Varieties (Lines) and Hybrids of Cotton

Luo Haihua1,2,Shao Deyi1,Chen Gong1,Xu Xiumin1,Gao Xin1,Yuan Changkai1,Peng Jinjian1,Tang Feiyu1   

  1. 1College of Agronomy,Jiangxi Agricultural University/Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education/Key Laboratory of Crop Physiology,Ecology and Genetic Breeding of Jiangxi Province,Nanchang 30045,Jiangxi,China
    2Jiangxi Cotton Research Institute,Jiujiang 332105,Jiangxi,China
  • Received:2017-05-08 Revised:2017-08-16 Online:2017-10-15 Published:2018-08-26
  • Contact: Feiyu Tang

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Abstract:

Twenty four cotton (Gossypium hirsutum L.) conventional varieties (lines) and seven crosses were divided into three types (high, medium, low) based on lint yield per hectare using clustering methodology. The results showed that all crosses belonged to the high and medium types, and the low type was only comprised of conventional varieties. Twelve economically important characteristics of the three types were separated using ANOVA procedure and the Duncan’s multiple range test. No. of boll per plant, No. of fruit branch, single boll weight, plant height and lint percentage high types were significantly higher than low types. The relationship among the 12 Characteristics were investigated using pearson correlation analysis, partial correlation analysis and path analysis. It was found that boll per plants was the largest contributor to lint yield for conventional cotton, followed by lint percentage and single boll weight, but lint percentage for hybrid cotton. Seed index was negatively correlated with lint yield per hectare in both conventional and hybrid cotton. Lint yield was negatively correlated to fiber length and strength, but positive correlated with micronaire in conventional cotton, indicating it was difficult to improve simultaneously lint yield and fiber quality properties. Lint yield was positively correlated to fiber strength, and exhibited little association with fiber length and micronaire in hybrid cotton, suggesting the negative correlation between lint yield and fiber quality could be broken up to some extent by heterosis utilization.

Key words: Upland cotton, Conventional variety (lines), Hybrid cotton, Cluster analysis, Correlation analysis

Fig.1

Cluster dedrogram of the 31 upland cotton varieties (lines) and crosses"

Table 1

Performance of yield, yield components and agronomic traits in high, medium and low yield types"

产量类型LYT 皮棉产量LY (kg/hm2) 株高PH (cm) 果枝数NFB (台) 株铃数TBN (个) 单铃重SBW (g) 衣分GO (%) 子指SI (g)
高High 1 178.22a 98.25a 15.15a 32.95a 4.37a 44.79a 10.46b
中Medium 747.40b 85.97a 13.36b 26.91b 3.93b 41.52b 11.33a
低Low 421.60c 73.99b 10.44c 18.94c 3.74b 38.24c 12.21a

Table 2

Performance of fiber quality traits in high, medium and low yield types"

产量类型LYT 纤维上半部平均长度Len (mm) 整齐度Uni (%) 断裂比强度Str (cN/tex) 马克隆值Mic 伸长率El (%)
高High 29.30b 85.35a 29.78b 5.30ab 6.90a
中Medium 29.24b 84.53a 30.46b 5.44a 6.92a
低Low 31.39a 84.77a 32.76a 5.20b 6.97a

Table 3

Test results of normality"

Kolmogorov-Smirnov Shapiro-Wilk
统计量
Statistic		 df Sig. 统计量
Statistic		 df Sig.
皮棉产量Lint yield 0.077 31 0.200* 0.967 31 0.432

Table 4

Simple correlation coefficients among the 12 main characters in cotton conventional varieties (lines) and hybrids"

性状
Character		 皮棉产量
LY		 株高
PH		 果枝数
NFB		 株铃数
TBN		 单铃重
SBW		 衣分
GO		 子指
SI		 纤维上半部平均长度
Len		 整齐度
Uni		 断裂比强度
Str		 马克隆值
Mic		 伸长率
El
皮棉产量 0.451 -0.097 -0.153 0.423 0.612** -0.653** -0.017 0.126 0.474* 0.033 0.330
株高 0.583** 0.415 0.244 0.047 0.322 -0.569* -0.348 0.136 -0.049 -0.220 -0.138
果枝数 0.913** 0.569** 0.724** -0.083 -0.398 0.142 -0.236 -0.019 0.192 0.083 -0.374
株铃数 0.930** 0.639** 0.835** -0.279 -0.578** 0.229 -0.376 -0.130 0.169 0.171 -0.615**
单铃重 0.442* 0.242 0.403 0.532** 0.291 -0.277 0.261 -0.055 0.177 0.109 0.495*
衣分 0.742** 0.553** 0.808** 0.667** 0.320 -0.699** 0.321 0.351 0.228 -0.299 0.659**
子指 -0.754** -0.623** -0.651** -0.788** -0.492* -0.672** 0.073 -0.132 -0.085 0.329 -0.268
纤维上半部平均长度 -0.706** -0.485* -0.728** -0.601** -0.337 -0.801** 0.600** 0.468* 0.363 -0.088 0.682**
整齐度 -0.092 -0.099 -0.129 -0.024 -0.196 -0.210 0.037 0.320 0.358 -0.286 0.126
断裂比强度Str -0.714** -0.622** -0.678** -0.707** -0.258 -0.677** 0.653** 0.753** 0.218 0.072 0.310
马克隆值 0.632** 0.305 0.519** 0.700** 0.486* 0.495* -0.643** -0.665** -0.186 -0.519** 0.106
伸长率 -0.124 -0.071 -0.118 -0.088 -0.144 -0.400 0.174 0.499* 0.615** 0.412* -0.212

Table 5

Partial correlation coefficients among 12 main characters in cotton conventional varieties (lines) and hybrids"

性状
Character		 株高
PH		 果枝数
NFB		 株铃数
TBN		 单铃重
SBW		 衣分
GO		 子指
SI		 纤维上半部平均长度
Len		 整齐度
Uni		 断裂比强度
Str		 马克隆值
Mic		 伸长率
El		 皮棉产量
LY
株高 0.585 0.342 -0.106 0.190 -0.120 -0.276 0.364 -0.607 -0.234 0.197 0.482
果枝数 -0.234 0.258 0.184 -0.222 0.074 -0.013 -0.046 0.368 0.008 0.058 -0.312
株铃数 0.570* 0.342 -0.060 -0.097 -0.179 0.271 -0.344 0.503 0.349 -0.458 -0.255
单铃重 -0.232 0.018 0.409 -0.272 -0.106 0.028 0.017 -0.193 -0.108 0.289 0.388
衣分 0.103 0.461 -0.013 -0.125 -0.286 -0.249 0.362 -0.019 -0.367 0.578 0.259
子指 -0.329 0.167 0.106 -0.293 -0.320 0.138 -0.003 0.158 0.287 -0.083 -0.280
纤维上半部平均长度 -0.446 -0.392 0.701** -0.241 -0.214 -0.199 0.648* -0.127 -0.429 0.718* 0.069
整齐度 -0.434 -0.324 0.472 -0.284 0.136 -0.220 -0.356 0.448 0.282 -0.615 -0.297
断裂比强度 -0.050 0.047 -0.366 0.313 0.160 0.176 0.431 0.080 -0.313 0.388 0.713*
马克隆值 -0.563* -0.418 0.728** -0.162 -0.059 -0.292 -0.760** -0.446 0.269 0.602 0.444
伸长率 0.460 0.478 -0.390 0.058 -0.332 0.078 0.476 0.655** 0.140 0.430 -0.342
皮棉产量 -0.388 0.252 0.703** -0.301 -0.100 -0.284 -0.445 -0.276 0.151 -0.375 0.239

Table 6

Derict and in derict path coefficients between 11 characters and lint yield in per hectare in cotton conventional varieties (lines)"

性状
Character		 简单相关
系数
SCC		 直接通径
系数
DPC		 间接通径系数TIPC
株高
PH		 果枝数
NFB		 株铃数
TBN		 单铃重
SBW		 衣分
GO		 子指
SI		 纤维上半部
平均长度Len		 整齐度
Uni		 断裂比强度
Str		 马克隆值
Mic		 伸长率
El
株高 0.583** -0.164 0.116 0.545 -0.023 -0.030 0.082 0.166 0.010 -0.044 -0.066 -0.008
果枝数 0.913** 0.203 -0.093 0.712 -0.039 -0.043 0.085 0.249 0.013 -0.049 -0.113 -0.013
株铃数 0.930** 0.852 -0.104 0.170 -0.051 -0.036 0.103 0.205 0.002 -0.051 -0.153 -0.009
单铃重 0.442* -0.096 -0.040 0.082 0.454 -0.017 0.065 0.115 0.019 -0.018 -0.106 -0.015
衣分 0.742** -0.053 -0.090 0.164 0.569 -0.031 0.088 0.273 0.021 -0.048 -0.108 -0.043
子指 -0.754** -0.131 0.102 -0.132 -0.672 0.047 0.036 -0.205 -0.004 0.047 0.140 0.019
纤维上半部平均长度 -0.706** -0.341 0.079 -0.148 -0.512 0.032 0.043 -0.079 -0.032 0.054 0.145 0.053
整齐度 -0.092 -0.099 0.016 -0.026 -0.020 0.019 0.011 -0.005 -0.109 0.016 0.041 0.065
断裂比强度 -0.714** 0.072 0.102 -0.138 -0.603 0.025 0.036 -0.086 -0.257 -0.021 0.113 0.044
马克隆值 0.632** -0.218 -0.050 0.105 0.597 -0.046 -0.026 0.084 0.227 0.018 -0.037 -0.022
伸长率 -0.124 0.106 0.012 -0.024 -0.075 0.014 0.021 -0.023 -0.170 -0.061 0.029 0.046

Table 7

Derict and in derict path coefficients between 11 characters and lint yield in per hectare in cotton crosses"

性状
Character		 简单相关
系数
SCC		 直接通径
系数
DPC		 间接通径系数TIPC
株高
PH		 果枝数
NFB		 株铃数
TBN		 单铃重
SBW		 衣分
GO		 子指
SI		 纤维上半部
平均长度Len		 整齐度
Uni		 断裂比
强度Str		 马克隆值
Mic		 伸长率
El
株高 0.451 0.459 -0.104 -0.058 0.010 0.100 0.126 -0.023 -0.029 -0.031 -0.062 0.064
果枝数 -0.097 -0.249 0.191 -0.172 -0.018 -0.124 -0.031 -0.016 0.004 0.122 0.024 0.174
株铃数 -0.153 -0.238 0.112 -0.181 -0.061 -0.180 -0.050 -0.025 0.028 0.107 0.049 0.285
单铃重 0.423 0.220 0.022 0.021 0.066 0.090 0.061 0.017 0.012 0.112 0.031 -0.230
衣分 0.612** 0.311 0.148 0.099 0.137 0.064 0.154 0.021 -0.076 0.144 -0.085 -0.306
子指 -0.653** -0.221 -0.261 -0.035 -0.054 -0.061 -0.217 0.005 0.028 -0.054 0.093 0.124
纤维上半部平均长度 -0.017 0.066 -0.160 0.059 0.089 0.058 0.100 -0.016 -0.101 0.230 -0.025 -0.316
整齐度 0.126 -0.216 0.062 0.005 0.031 -0.012 0.109 0.029 0.031 0.227 -0.081 -0.058
断裂比强度 0.474* 0.633 -0.023 -0.048 -0.040 0.039 0.071 0.019 0.024 -0.077 0.020 -0.144
马克隆值 0.033 0.284 -0.101 -0.021 -0.041 0.024 -0.093 -0.073 -0.006 0.062 0.045 -0.049
伸长率 0.330 -0.464 -0.063 0.093 0.146 0.109 0.205 0.059 0.045 -0.027 0.196 0.030
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