陆地棉种子萌发期对低温胁迫的响应及耐冷性鉴定

张陇艳,程功敏,魏恒玲,王寒涛,芦建华,马峙英,喻树迅

Chilling Tolerance Identification and Response to Cold Stress of Gossypium hirsutum Varieties (Lines) During Germination Stage

ZHANG LongYan,CHENG GongMin,WEI HengLing,WANG HanTao,LU JianHua,MA ZhiYing,YU ShuXun

表2 萌发期各综合指标的系数及贡献率

Table 2 Coefficients and contribution of comprehensive indexes at germination stage

项目Items 指标 Indices CI1 CI2 CI3 特征向量 Eigenvector VI 0.335 0.053 0.060 SGC 0.333 -0.129 -0.042 AGS -0.333 0.141 0.011 GI 0.331 -0.141 -0.016 MGT -0.330 0.132 0.014 GR 0.321 -0.151 -0.024 RFW 0.315 0.107 0.079 RDW 0.284 0.186 0.086 MGR 0.258 -0.150 -0.031 GP 0.238 -0.066 -0.020 EDW 0.117 0.516 0.171 EFW 0.132 0.490 0.109 IR -0.077 -0.365 0.481 RIR -0.054 -0.298 0.632 PE -0.028 -0.315 -0.553 特征根Eigenvalue 2.877 1.656 1.148 贡献率Contribution (%) 55.169 18.274 8.786 累计贡献率Cumulative contribution (%) 55.169 73.443 82.229