淹水胁迫对不同抗性甜玉米自交系幼苗生长及生理特性的影响
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摘要
本研究以甜玉米自交系K 61(渍涝敏感型)与K 85(耐渍型)为试验材料,对淹水处理后2个品种的形态特征及生理特性进行研究。结果表明,K 61在淹水胁迫后根长及根鲜重均低于对照组,K 85的根长显著高于对照组,根鲜重则低于对照组;气生根数目两自交系均极显著高于对照组,但耐涝型材料气生根数目高于涝敏感材料。地上部分,在淹水处理后其中K 61表现为茎长及茎鲜重均受抑制,K 85则表现出茎鲜重高于对照组。淹水胁迫提高了K 61根系SOD酶活性,抑制了POD酶活性;K 85在淹水胁迫下导致2种酶活性升高。
The morphological and physiological characteristics of sweet corn inbred lines K 61(waterlogging-sensitive line) and K 85(waterlogging-tolerant line) under waterlogging stress were studied in this study. The results showed that root length and root fresh weight were lower than control group under waterlogging conditions. The root length of K 85 was significantly higher than control group, but root fresh weight was lower than that of the control group. Two inbred lines showed more aerial root number than that of the control group, and waterlogging-tolerant line showed more aerial root number than waterlogging-sensitive line. For aboveground part, the stem length and stem fresh weight of K 61 were suppressed under waterlogging condition, and K 85 showed higher stem fresh weight in this condition. Waterlogging enhancing SOD enzymes activity and reducing POD enzymes activity of K 61. To K 85, both SOD and POD enzymes activity was increased under waterlogging stress.
The morphological and physiological characteristics of sweet corn inbred lines K 61(waterlogging-sensitive line) and K 85(waterlogging-tolerant line) under waterlogging stress were studied in this study. The results showed that root length and root fresh weight were lower than control group under waterlogging conditions. The root length of K 85 was significantly higher than control group, but root fresh weight was lower than that of the control group. Two inbred lines showed more aerial root number than that of the control group, and waterlogging-tolerant line showed more aerial root number than waterlogging-sensitive line. For aboveground part, the stem length and stem fresh weight of K 61 were suppressed under waterlogging condition, and K 85 showed higher stem fresh weight in this condition. Waterlogging enhancing SOD enzymes activity and reducing POD enzymes activity of K 61. To K 85, both SOD and POD enzymes activity was increased under waterlogging stress.
引文
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[4]Blokhina O.Antioxidants,Oxidative Damage and Oxygen Deprivation Stress:a Review[J].Annals of Botany,2003,91(2):179-194.
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[6]涂攀峰,姬静华,龚林,等.淹水胁迫对鲜食玉米幼苗生长发育的影响[J].广东农业科学,2017(10):1-5.
[7]朱敏,史振声,李凤海.玉米耐涝机理研究进展[J].玉米科学,2015(1):122-127.
[8]何学利.植物体内的保护酶系统[J].现代农业科技,2010(10):37-38.
[9]李建鸽.土壤渍涝对玉米苗期生长及生理的影响机制[D].华中农业大学,2014.
[10]僧珊珊,王群,张永恩,等.外源亚精胺对淹水胁迫玉米的生理调控效应[J].作物学报,2012,38(6):1042-1050.
[11]姜华武,张祖新.淹水对玉米根系几种酶活性的影响[J].湖北农学院学报,1999(3):18-20.
[2]僧珊珊,王群,李潮海,等.淹水胁迫下不同玉米品种根结构及呼吸代谢差异[J].中国农业科学,2012(20):4141-4148.
[3]梁哲军,陶洪斌,王璞.淹水解除后玉米幼苗形态及光合生理特征恢复[J].生态学报,2009(7):3977-3986.
[4]Blokhina O.Antioxidants,Oxidative Damage and Oxygen Deprivation Stress:a Review[J].Annals of Botany,2003,91(2):179-194.
[5]Colmer T D,Cox M C H,Voesenek L A C J.Root aeration in rice (Oryza sativa):evaluation of oxygen,carbon dioxide,and ethylene as possible regulators of root acclimatizations[J].New Phytologist,2006,170(4):767-778.
[6]涂攀峰,姬静华,龚林,等.淹水胁迫对鲜食玉米幼苗生长发育的影响[J].广东农业科学,2017(10):1-5.
[7]朱敏,史振声,李凤海.玉米耐涝机理研究进展[J].玉米科学,2015(1):122-127.
[8]何学利.植物体内的保护酶系统[J].现代农业科技,2010(10):37-38.
[9]李建鸽.土壤渍涝对玉米苗期生长及生理的影响机制[D].华中农业大学,2014.
[10]僧珊珊,王群,张永恩,等.外源亚精胺对淹水胁迫玉米的生理调控效应[J].作物学报,2012,38(6):1042-1050.
[11]姜华武,张祖新.淹水对玉米根系几种酶活性的影响[J].湖北农学院学报,1999(3):18-20.