Table 2.

Influence of exogenous gamma-amino butyric acid (GABA) application on yield and related components of fragrant rice under Pb toxicity.

Rice cultivars	Treatments	Productive tillers/pot	Grains/panicle	Filled grain %	1000-grain weight (g)	grain yield/pot (g)
GXZ	Ck	30.41 ± 0.41 a	167.17 ± 1.69 ab	79.45 ± 3.75 a	20.05 ± 0.36 a	69.54 ± 3.68 ab
	GABA	31.53 ± 0.87 a	176.90 ± 3.55 a	78.14 ± 2.95 a	20.04 ± 0.17 a	75.58 ± 3.41 a
	Pb + GABA	26.63 ± 0.86 b	163.87 ± 2.19 b	72.76 ± 0.21 a	19.82 ± 0.10 a	62.34 ± 1.31 b
	Pb	23.00 ± 1.15 c	163.27 ± 6.14 b	69.93 ± 5.19 a	18.37 ± 0.38 a	51.17 ± 2.03 c
	Means	27.89	167.80	72.27 3.89	19.57	64.66
	LSD0.05	3.17	12.55	10.64	1.08	10.49
NX-18	Ck	26.83 ± 1.17 a	162.80 ± 6.40 a	81.87 ± 5.73 a	20.02 ± 1.03 a	57.46 ± 2.12 b
	GABA	27.48 ± 1.06 a	151.20 ± 1.94 a	81.82 ± 1.35 a	20.48 ± 0.35 a	63.39 ± 1.68 a
	Pb + GABA	22.67 ± 1.45 b	147.33 ± 5.21 a	70.83 ± 1.89 ab	19.96 ± 1.13 a	48.28 ± 2.71 c
	Pb	20.33 ± 1.45 b	144.00 ± 6.66 a	57.33 ± 5.58 b	17.40 ± 0.60 b	28.70 ± 0.40 d
	Means	24.33	151.33	75.32	19.47	49.46
	LSD0.05	3.91	20.89	15.94	1.36	4.46

Ck: without Pb (control); GABA: 1 mM l⁻¹ GABA; Pb + GABA: 1 mM GABA + 800 mg of Pb kg⁻¹ of soil; Pb = 800 mg kg⁻¹ of soil. GXZ, Guixiangzhan; NX-18, Nongxiang-18.