ROOTSTOCK SCREENING FOR TOLERANCE TO LOW TEMPERATURE, WEAK LIGHT AND SALT STRESS IN CUCUMBER
To screen rootstocks for cucumber grafting with tolerance to low temperature, weak light, and salt stress, seedlings of 15 cultivars were treated in a growth chamber (5°C and 100 µmol·m-2·s-1 PAR) or in 100 mmol·L-1 of NaCl solution. The growth and physiological indicators were investigated, and tolerance was evaluated by establishing a subordinative function value and by using principal component and regression analyses. The results of cluster analysis showed that Yunnan figleaf gourd and Tielizhen had the highest tolerance to low temperature and weak light stress, followed by Shintosa, Japan figleaf gourd and Qingyan rootstock NO. 1; Improved Shintosa NO. 1, Armor, Just, Terutaro and Able were rootstocks with moderate tolerance; Huofenghuang, Sherpa and Grip were sensitive; Tokiwa power-Z and Glitter were most sensitive. For the tolerance to salt stress, Yunan figleaf gourd, Japan figleaf gourd, Tielizhen, Shintosa and Qingyan rootstock NO. 1 were higher tolerant, followed by Armor and Improved Shintosa NO.1; Just, Terutaro, Able, Tokiwa power-Z, Grip and Glitter were sensitive; Huofenghuang and Sherpa were more sensitive.
Li, Y., Tian, X.M., Wei, M., Wang, X.F., Shi, Q.H. and Yang, F.J. (2015). ROOTSTOCK SCREENING FOR TOLERANCE TO LOW TEMPERATURE, WEAK LIGHT AND SALT STRESS IN CUCUMBER. Acta Hortic. 1086, 167-176
NaCl, resistance, function value, principal component analysis, regression analysis, cluster analysis