盐碱胁迫对海岛棉种子萌发及幼苗根系生长的影响

严青青,张巨松,李星星,王燕提

Effects of salinity stress on seed germination and root growth of seedlings in island cotton

Qing-Qing YAN,Ju-Song ZHANG,Xing-Xing LI,Yan-Ti WANG

表1 盐碱浓度(x, mmol L-1)与海岛棉株高、根干重及茎叶干重的特征分析

Table 1 Characteristics analysis of saline-alkali concentration (x, mmol L-1) and sea island cotton seedlings plant height, root dry weight and stem and leaf dry weight

性状 Trait (y) 盐类型 Salt genre 品种 Variety 回归方程 Regression equation R2 株高 Plant height (cm) 中性盐 Neutral salt XH31 y = -0.030x+13.7 0.75** XH35 y = -0.035x+14.6 0.89** XH43 y = -0.030x+13.1 0.73** XH48 y = -0.024x+13.1 0.62** 碱性盐 Basic salt XH31 y = -0.036x+12.8 0.91** XH35 y = -0.042x+14.0 0.88** XH43 y = -0.031x+11.4 0.91** XH48 y = -0.035x+14.1 0.69** 根干重 Root dry weight (mg) 中性盐 Neutral salt XH31 y = -0.024x+13.4 0.90** XH35 y = -0.026x+17.2 0.75** XH43 y = -0.025x+14.5 0.79** XH48 y = -0.024x+11.8 0.91** 性状 Trait (y) 盐类型 Salt genre 品种 Variety 回归方程 Regression equation R2 碱性盐 Basic salt XH31 y = -0.034x+13.0 0.91** XH35 y = -0.040x+17.1 0.89** XH43 y = -0.035x+13.8 0.89** XH48 y = -0.031x+11.0 0.95** 茎、叶干重 Stem and leaf dry weight (mg) 中性盐 Neutral salt XH31 y = -0.026x+67.0 0.24** XH35 y = -0.022x+64.2 0.33** XH43 y = -0.015x+63.1 0.09 XH48 y = -0.035x+63.8 0.37** 碱性盐 Basic salt XH31 y = -0.110x+76.8 0.23* XH35 y = -0.019x+59.9 0.06 XH43 y = -0.003x+62.5 0.01 XH48 y = -0.119x+78.1 0.29**