【摘要】 用 ＬａＣｌ_３和ＣＰＺ（氯丙嗪）对水稻幼苗根系预处理以阻碍 Ｃａ^２＋·ＣａＭ（钙调素）信使传导后，降低干旱、盐和低温胁迫下水稻幼苗存活率、相对含水量（ＲＷＣ）、相对生长量，同时增大其质膜透性．表明Ｃａ^２＋·ＣａＭ信使系统参与水稻幼苗抗逆性调控，阻碍 Ｃａ^２·ＣａＭ信使传导后，水稻幼苗抗逆性下降．更多还原

【Abstract】 After blocking Ca^{2 +} CaM messenger transduction by pretreating rhizosphere of rice seedling with LaCl3 or CPZ （chlorpromazine）, survival rate, relative water content and relative biomass of rice seedlings subjected to drought , salt and chilling stresses decreased, at the same time membrane permeability increased. These results suggested that Ca2+. CaM messenger system was involved in controlling stress resistance of rice seedling, blocking messenger transduction, drought resistance, salt resistance and chilling resistance decreased.更多还原