外源生长调节物质对甜高粱种子萌发过程中盐分胁迫的缓解效应及其生理机制

朱广龙,宋成钰,于林林,陈许兵,智文芳,刘家玮,焦秀荣,周桂生

Alleviation Effects of Exogenous Growth Regulators on Seed Germination of Sweet Sorghum under Salt Stress and Its Physiological Basis

Guang-Long ZHU,Cheng-Yu SONG,Lin-Lin YU,Xu-Bing CHEN,Wen-Fang ZHI,Jia-Wei LIU,Xiu-Rong JIAO,Gui-Sheng ZHOU

表9 盐分胁迫下不同生长调节物质对甜高粱种子抗氧化酶活性的影响

Table 9 Effect of different types of exogenous growth regulator on antioxidant enzyme activities of sweet sorghum under salt stress

盐分浓度 Salt concentration (mmol L^-1)	生长调节物质 Exogenous growth regulator	酶活性 Enzyme activity (U g^-1 FW)
盐分浓度 Salt concentration (mmol L^-1)	生长调节物质 Exogenous growth regulator	SOD	POD	CAT
0	0	31.35 e	257.98 d	251.04 c
	KT	40.94 d	287.47 c	267.88 b
	GA₃	51.35 c	361.24 b	271.99 b
	SA	62.02 b	534.74 a	437.42 a
	GABA	72.60 a	540.22 a	439.85 a
	平均值Mean	51.65	396.33	333.64
50	0	41.56 c	343.57 e	323.38 c
	KT	49.98 c	372.75 d	323.83 c
	GA₃	63.51 b	455.42 c	335.06 b
	SA	77.53 a	586.33 a	464.59 a
	GABA	81.56 a	549.64 b	471.70 a
	平均值Mean	62.83	461.54	383.71
100	0	15.38 e	185.61 e	199.89 e
	KT	27.55 d	211.66 b	213.30 d
	GA₃	43.78 b	318.92 c	245.10 c
	SA	62.20 a	450.79 a	298.31 b
	GABA	31.13 c	395.49 b	361.51 a
	平均值Mean	36.01	312.49	263.62
150	0	10.80 c	120.92 e	153.75 e
	KT	50.22 a	223.88 c	193.73 c
	GA₃	20.64 b	271.57 b	178.00 d
	SA	24.15 b	298.78 a	231.31 a
	GABA	28.99 b	185.78 d	212.83 b
	平均值Mean	26.96	220.19	193.92