CAJ | 학술논문

为了研究不同抗性花生品种对疮痂病的抗性差异，在田间试验条件下，采用喷雾法研究抗病品种‘贺油13’、感病品种‘泉花10号’接种疮痂病菌后其叶片生理特性及产量的变化。结果表明：可溶性糖含量在接种后呈先升高后降低的趋势，抗病品种其可溶性糖含量均高于其对照，而感病品种与其对照相比均有所下降，说明花生叶片中可溶性糖含量与植株抗病性有一定的相关性。抗感花生品种接菌后叶片可溶性蛋白质含量均高于其对照，但感病品种比抗病品种的峰值出现的要早，表明感病品种对病菌的侵染较敏感，品种的抗病性与对病菌侵染的反应呈负相关。接菌后抗感品种叶片超氧化物歧化酶（SOD）活性均呈先升高后降低的变化趋势，与其相应的对照相比，抗病品种比感病品种降低的幅度相对较小；花生叶片过氧化氢酶（CAT）和过氧化物酶（POD）活性随生育进程的推进整体呈现先下降后升高再降低的变化趋势，其相应的对照相比，接种后抗病品种的 CAT和 POD活性表现相对较高，由此说明保护酶在花生对疮痂病的抗性机制中起了重要作用。接种后2个品种叶片丙二醛（MDA）含量有所增加，表明其质膜受到不同程度的伤害。产量结果研究表明，接菌后抗、感品种均有所减产，但感病品种‘泉花10号’减产幅度较大。
위료연구불동항성화생품충대창가병적항성차이，재전간시험조건하，채용분무법연구항병품충‘하유13’、감병품충‘천화10호’접충창가병균후기협편생리특성급산량적변화。결과표명：가용성당함량재접충후정선승고후강저적추세，항병품충기가용성당함량균고우기대조，이감병품충여기대조상비균유소하강，설명화생협편중가용성당함량여식주항병성유일정적상관성。항감화생품충접균후협편가용성단백질함량균고우기대조，단감병품충비항병품충적봉치출현적요조，표명감병품충대병균적침염교민감，품충적항병성여대병균침염적반응정부상관。접균후항감품충협편초양화물기화매（SOD）활성균정선승고후강저적변화추세，여기상응적대조상비，항병품충비감병품충강저적폭도상대교소；화생협편과양화경매（CAT）화과양화물매（POD）활성수생육진정적추진정체정현선하강후승고재강저적변화추세，기상응적대조상비，접충후항병품충적 CAT화 POD활성표현상대교고，유차설명보호매재화생대창가병적항성궤제중기료중요작용。접충후2개품충협편병이철（MDA）함량유소증가，표명기질막수도불동정도적상해。산량결과연구표명，접균후항、감품충균유소감산，단감병품충‘천화10호’감산폭도교대。
In order to identify the resistance of peanut varieties against scab disease, the changes of physiological characteristics and yield in two peanut varieties ‘Heyou 13’ and ‘Quanhua10’ with different resistance effected by peanut scab were stud-ied in field experiment by spray. The results showed the soluble sugar increased firstly and then decreased both in the resistant and susceptible peanuts after inocu-lation. Compared with the control, the soluble sugar of resistant peanut was higher, and that of the susceptible peanut was lower, which implied that the peanut resis-tance to scab was positive correlated with soluble sugar content. The soluble pro-tein content in leaves of resistant and susceptible peanut varieties after inoculation was higher than that of the control. The peak of soluble protein content appeared earlier in the susceptible peanut than in the resistant peanut, which indicated that the susceptible peanut were more sensitive to the pathogen than the resistant peanut. The leaf SOD activity increased firstly and then decreased both in resistant and susceptible varieties, while the decrease in the resistant variety were lower than in the susceptible variety. With the growth process, the CAT and POD activities first decreased, then increased, and again decreased. Compared with the corresponding control, the resistant variety had relatively higher CAT and POD activities than the susceptible variety, which il ustrated that the protective enzymes played important roles in resistance mechanism to scab. The MDA content of the two peanut vari-eties after inoculation increased, indicating that plasma membranes were subjected to different degrees of damage. The yield of resistant and susceptible varieties after inoculation reduced, while the yield of the susceptible peanut of ‘Quanhua 10’ re-duced greater.