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5 不同外源生长调节物质对不同盐分浓度下甜高粱种子吸水率的影响

Table 5 Effect of exogenous growth regulators on water uptake rate of sweet sorghum under salt concentration stresses

盐分浓度 Salt stress (mmol L^-1 )	生长调节物质 Exogenous growth regulator	吸水率Water uptake rate (%)
盐分浓度 Salt stress (mmol L^-1 )	生长调节物质 Exogenous growth regulator	0-4 h	4-8 h	8-16 h	16-24 h	24-36 h	36-48 h
0	0	12.64 b	21.91 b	28.70 c	52.08 b	67.7 c	78.20 b
	KT	12.80 b	25.60 ab	29.44 bc	54.87 b	71.2 ab	83.75 a
	GA₃	13.84 a	28.79 ab	41.05 a	66.26 a	74.1 a	84.89 a
	SA	12.85 b	27.43 ab	37.50 ab	56.09 b	72.0 b	84.21 a
	GABA	13.44 ab	27.98 a	39.11 a	58.14 ab	73.4 ab	84.73 a
	平均值Mean	13.03	26.34	35.16	57.49	71.7	83.16
50	0	13.33 a	23.50 a	30.83 b	52.95 b	71.5 b	81.83 b
	KT	13.67 a	26.78 a	30.79 b	55.04 b	72.5 ab	84.58 a
	GA₃	13.85 a	29.25 a	42.06 a	67.60 a	75.3 a	86.03 a
	SA	13.73 a	28.90 a	37.57 a	56.37 b	72.8 ab	85.51 a
	GABA	13.79 a	28.97 a	40.77 a	58.97 b	73.8 ab	85.74 a
	平均值Mean	13.68	27.48	36.41	58.19	73.2	84.74
100	0	8.41 a	14.35 b	17.11 a	28.64 a	41.9 a	43.73 c
	KT	10.34 a	16.54 a	17.60 a	30.21 a	42.6 a	44.70 bc
	GA₃	11.46 a	17.16 a	18.30 a	32.98 a	44.4 a	48.60 a
	SA	10.61 a	16.62 a	17.67 a	30.24 a	43.0 a	46.43 abc
	GABA	11.41 a	17.06 a	17.97 a	32.68 a	43.6 a	47.03 ab
	平均值Mean	10.45	16.34	17.73	30.95	43.1	46.10
150	0	4.08 a	6.87 b	9.48 a	22.61 c	25.2 d	27.15 a
	KT	5.13 a	6.99 b	9.77 a	23.59 c	32.3 c	35.10 a
	GA₃	5.85 a	8.83 a	10.21 a	28.89 a	35.6 a	38.19 a
	SA	5.49 a	7.15 b	9.78 a	27.20 b	33.8 b	36.52 a
	GABA	5.62 a	8.24 ab	9.92 a	27.87 ab	34.8 ab	37.45 a
	平均值Mean	5.23	7.62	9.83	26.03	32.3	34.88