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Table 2 The Correlation Efficiency Between Quality Traits and Environmental factors

From: Deciphering the Environmental Impacts on Rice Quality for Different Rice Cultivated Areas

Area Environmental factors Brown rice Milled rice Head rice Chalkiness grain Chalkiness level Grain length Grain width Aspect ratio Alkali consumption Gel consistency Amylose contents Protein contents
Entirety Solar radiation 0.286** 0.285** 0.166* 0.056 0.072 −0.254** 0.109* −0.221** −0.188** −0.158** 0.063 −0.294**
Lux meter 0.246** 0.243** 0.017 0.085 0.108* −0.201** 0.127* −0.208** −0.293** 0.015 −0.066 −0.196**
Light hour 0.359** 0.357** 0.112* 0.077 0.097 −0.196** 0.223** −0.289** −0.257** −0.035 0.142** −0.518**
Air temperature 0.066 0.065 −0.194* 0.003 0.033 −0.057 0.035 −0.063 −0.363** 0.154** −0.386** 0.320**
Day temperature 0.130** 0.128** −0.170* 0.017 0.049 −0.074 0.083 −0.112* −0.401** 0.153** −0.335** 0.196**
Night temperature −0.01 −0.012 −0.221** −0.015 0.01 −0.015 −0.012 −0.002 −0.306** 0.157** −0.420** 0.438**
Daily range 0.297** 0.295** 0.181** 0.088 0.089 −0.109* 0.219** −0.238** −0.078 −0.055 0.364** −0.733**
Relative humidity 0.107* 0.112* 0.144** −0.095 −0.079 −0.129* −0.064 −0.013 0.019 −0.271** −0.017 0.160**
Day humidity −0.189** −0.184** 0.009 −0.118* −0.119* −0.015 −0.238** 0.192** 0.195** −0.191** −0.187** 0.584**
Night humidity 0.282** 0.283** 0.246** 0.021 0.028 −0.171** 0.122* −0.189** −0.029 −0.217** 0.286** −0.486**
SY Solar radiation −0.055 −0.054 −0.258** 0.149 0.160* −0.246** −0.058 −0.08 −0.315** 0.071 −0.334** 0.163*
Lux meter 0.029 0.029 −0.213** 0.128 0.137 −0.209** −0.021 −0.096 −0.273** 0.063 −0.285** 0.161*
Light hour −0.133 −0.132 −0.279** 0.139 0.156 −0.218** −0.032 −0.079 −0.221** 0.051 −0.325** 0.174*
Air temperature −0.066 −0.066 −0.280** 0.152 0.156 −0.234** −0.055 −0.077 −0.319** 0.076 −0.346** 0.156
Day temperature −0.064 −0.064 −0.276** 0.15 0.15 −0.235** −0.055 −0.077 −0.317** 0.075 −0.346** 0.159*
Night temperature −0.07 −0.069 −0.286** 0.154 0.154 −0.233** −0.055 −0.076 −0.321** 0.077 −0.346** 0.152
Daily range 0.124 0.124 0.192* −0.137 −0.135 0.131 −0.005 0.071 0.254** −0.025 0.188* −0.065
Relative humidity −0.068 −0.068 −0.303** 0.147 0.158 −0.212** −0.058 −0.064 −0.304** 0.093 −0.346** 0.102
Day humidity −0.074 −0.074 −0.309** 0.148 0.157 −0.202* −0.059 −0.058 −0.301** 0.094 −0.333** 0.089
Night humidity −0.051 −0.051 −0.277 0.137 0.152 −0.225** −0.052 −0.076 −0.300** 0.088 −0.362** 0.128
JS Solar radiation −0.1 −0.11 −0.181* 0.101 0.396** −0.343** −0.119 −0.091 −0.176* 0.161* −0.470** 0.434**
Lux meter −0.103 −0.123 −0.161* 0.1 0.149 −0.350** −0.113 −0.097 −0.184* 0.165* −0.464** 0.426**
Light hour −0.086 −0.128 −0.147 0.095 0.188* −0.375** −0.118 −0.108 −0.151 0.156 −0.452** 0.420**
Air temperature −0.1 −0.111 −0.180* 0.097 0.128 −0.353** −0.118 −0.097 −0.134 0.157 −0.460** 0.423**
Day temperature −0.099 −0.11 −0.178* 0.098 0.11 −0.353** −0.117 −0.098 −0.14 0.159* −0.462** 0.427**
Night temperature −0.102 −0.113 −0.183* 0.095 0.144 −0.353** −0.119 −0.096 −0.123 0.153 −0.454** 0.415**
Daily range −0.114 −0.124 −0.053 0.154 0.103 −0.241** −0.058 −0.086 −0.131 0.131 −0.357** 0.369**
Relative humidity 0.08 0.091 0.168* −0.158 −0.152 0.312** 0.1 0.09 0.165* −0.161* 0.437** −0.420**
Day humidity 0.078 0.118 0.163* −0.115 −0.270** 0.304** 0.096 0.09 0.171* −0.162* 0.441** −0.426**
Night humidity 0.102 0.093 0.182* −0.142 −0.361** 0.334** 0.116 0.086 0.126 −0.149 0.384** −0.365**
SC Solar radiation −0.048 −0.047 −0.399** 0.117 0.212** −0.135 0.074 −0.159 0.224** 0.138 −0.199* 0.353**
Lux meter 0.104 0.105 −0.088 0.063 0.061 −0.142 −0.033 −0.027 0.055 0.039 −0.027 0.062
Light hour −0.109 −0.109 −0.386** 0.170* 0.171* −0.185* 0.057 −0.174* 0.221** 0.176* −0.219** 0.419**
Air temperature −0.09 −0.091 −0.390** 0.158 0.144 −0.206* 0.042 −0.157 0.215** 0.132 −0.169* 0.454**
Day temperature −0.072 −0.073 −0.393** 0.168* 0.151 −0.187* 0.052 −0.156 0.219** 0.121 −0.156 0.422**
Night temperature −0.109 −0.11 −0.376** 0.141 0.131 −0.225** 0.029 −0.153 0.203* 0.142 −0.180* 0.479**
Daily range 0.096 0.098 −0.119 0.079 0.052 0.05 0.073 −0.044 0.107 −0.047 0.059 −0.028
Relative humidity −0.14 −0.14 −0.319** 0.186* 0.206* −0.190* 0.036 −0.15 0.161* 0.211** −0.275** 0.421**
Day humidity −0.147 −0.149 −0.280** 0.153 0.176* −0.193* 0.019 −0.133 0.137 0.203* −0.269** 0.418**
Night humidity −0.122 −0.122 −0.348** 0.216** 0.231** −0.185* 0.046 −0.159* 0.183* 0.211** −0.269** 0.404**
SZ Solar radiation −0.043 −0.153 0.095 0.084 0.014 0.102 0.019 0.019 0.024 0.113 −0.153 0.058
Lux meter −0.162* −0.162* 0.082 0.053 0.081 −0.043 −0.045 0.004 −0.042 −0.147 0.104 −0.228
Light hour 0.142 0.142 0.121 −0.062 −0.077 −0.164* −0.114 0.025 0.071 0.105 −0.152 0.240**
Air temperature 0.103 0.103 0.162* −0.062 −0.074 −0.193* −0.131 0.028 0.055 0.043 −0.160* 0.207*
Day temperature 0.094 0.094 0.169* −0.059 −0.067 −0.194* −0.132 0.028 0.058 0.035 −0.149 0.198*
Night temperature 0.108 0.109 0.153 −0.063 −0.079 −0.187* −0.129 0.03 0.053 0.049 −0.169* 0.215**
Daily range −0.163* −0.163* −0.021 0.046 0.08 0.034 0.049 −0.039 −0.054 −0.134 0.14 −0.228**
Relative humidity −0.052 −0.054 −0.056 0.051 0.085 0.208** 0.113 0.003 0.062 −0.032 0.193* −0.132
Day humidity 0.027 0.025 −0.077 0.028 0.042 0.212** 0.119 0.007 0.081 0.038 0.128 −0.021
Night humidity −0.098 −0.099 −0.035 0.061 0.103 0.174* 0.096 −0.004 0.037 −0.075 0.210** −0.190*
  1. *P < 0.05, **P < 0.01