CAJ | 학술논문

以1年生喜树幼苗为材料,研究在不同NaCl质量分数胁迫下喜树幼苗的生长和生理特性.结果表明:随着NaCl处理质量分数的升高,幼苗植株的盐害指数升高;叶片细胞膜相对透性和可溶性糖质量分数显著增加;叶片游离脯氨酸(Pro)、丙二醛(MDA)质量摩尔浓度和超氧化物歧化酶(SOD)活性在NaCl质量分数低于0.45%时增加较少,而NaCl质量分数高于0.45%时增加较多.由此得出,喜树幼苗在NaCl胁迫下虽然具有一定的渗透调节能力和自由基清除能力,但对盐胁迫还是比较敏感的.
이1년생희수유묘위재료,연구재불동NaCl질량분수협박하희수유묘적생장화생리특성.결과표명:수착NaCl처리질량분수적승고,유묘식주적염해지수승고;협편세포막상대투성화가용성당질량분수현저증가;협편유리포안산(Pro)、병이철(MDA)질량마이농도화초양화물기화매(SOD)활성재NaCl질량분수저우0.45%시증가교소,이NaCl질량분수고우0.45%시증가교다.유차득출,희수유묘재NaCl협박하수연구유일정적삼투조절능력화자유기청제능력,단대염협박환시비교민감적.
An experiment was conducted to study the leaf physiological characteristics and growth of 1 year old Camptotheca acuminata seedlings treated with different concentrations of NaCl. Results showed that, with the increase of salt concentration, salt injury index of the seedlings increased and relative membrane permeability and soluble sugar content in leaves increased significantly. Contents of proline and malondialdehyde (MDA) and superoxide dismutase (SOD) activity increased slowly when the treatment concentration of NaCl was lower than 0.45%, while they increased rapidly when the treatment concentration was higher than 0.45%. Therefore, C. acuminata seedlings have osmotic regulation capacity and free radical scavenging capacity to a certain extent, but it is relatively susceptible to NaCl stress.