论文部分内容阅读
以高持绿性甘蔗细茎野生种(云瑞08-254)和低持绿性甘蔗细茎野生种(云瑞09-525)为试验材料,在干旱胁迫和正常浇水两个条件下,研究干旱胁迫对甘蔗叶片生理活性和生物量的影响。结果表明:干旱胁迫下,云瑞08-254的叶片SOD、CAT和MDA含量都明显增加,而云瑞09-525叶片SOD、CAT、POD和MDA含量均明显降低;云瑞08-254的相对电导率增幅显著小于云瑞09-525,云瑞08-254的质膜受损程度相对较小;与云瑞09-525相比,云瑞08-254在干旱胁迫后脯氨酸、可溶性糖和可溶性蛋白含量升高幅度较为明显,且本身即具有较高的脯氨酸、可溶性糖和可溶性蛋白含量。在干旱胁迫条件下,持绿性甘蔗细茎野生种能通过产生保护性物质降低对干旱的敏感性,通过调节SOD、CAT和POD活性以及MDA、脯氨酸、可溶性糖和可溶性蛋白含量以及持绿生物量的变化,从而减轻干旱的伤害,表现出更好的抗旱性。
Under the conditions of drought stress and normal watering, two wild species of high sugarcane sugarcane (Yunrui 08-254) and those of low sugarcane green stem (Yunrui 09-525) Effects of drought stress on physiological activity and biomass of sugarcane leaves. The results showed that under drought stress, the contents of SOD, CAT and MDA in Yunrui 08-254 increased obviously, while the contents of SOD, CAT, POD and MDA in Yunrui 09-525 decreased obviously. Compared with Yunrui 08-254, Compared with Yunrui 09-525, compared with Yunrui 09-525, Yunrui 08-254 had more proline and soluble sugar after drought stress than the Yunrui 09-525 and Yunrui 08-254, And soluble protein content increased more obvious, and itself has a higher proline, soluble sugar and soluble protein content. Under drought stress, the wild sugarcane-holding stems could reduce the sensitivity to drought by producing protective substances. By regulating the activities of SOD, CAT and POD and the content of MDA, proline, soluble sugar and soluble protein, Green biomass changes, thereby reducing drought damage, showing better drought resistance.