An in situ approach to characterizing photosynthetic gas exchange of rice panicle

Table 1 Panicle photosynthetic gas exchange parameters of the rice cultivars measured 5 days after heading

Year	Cultivar	Panicle A_net (nmol s⁻¹)	Panicle A_gross (nmol s⁻¹)	Panicle R_d (nmol s⁻¹)	Spikelet A_net (nmol s⁻¹)	Spikelet A_gross (nmol s⁻¹)	Spikelet R_d (nmol s⁻¹)
2015	YLY900	12 ± 2.4a	49 ± 2.8a	37 ± 1.5a	0.035 ± 0.003a	0.147 ± 0.011b	0.111 ± 0.013a
	CY1000	7.2 ± 1.3b	43.6 ± 7a	36.4 ± 7.3a	0.015 ± 0.004b	0.091 ± 0.005c	0.075 ± 0.005b
	SY63	11.8 ± 2.2a	42.8 ± 2.7a	31 ± 2.8a	0.051 ± 0.012a	0.185 ± 0.014a	0.133 ± 0.007a
	9311	10.9 ± 1.4ab	46 ± 3.4a	35 ± 3.9a	0.044 ± 0.009a	0.182 ± 0.007ab	0.138 ± 0.003a
	XS134	2.7 ± 1.1c	18.1 ± 3.4b	15.4 ± 2.5b	0.012 ± 0.005b	0.078 ± 0.022c	0.067 ± 0.017b
2016	YLY900	7.3 ± 2.4b	47.5 ± 4.1a	40.2 ± 5.6a	0.021 ± 0.007bc	0.136 ± 0.011b	0.115 ± 0.014b
	CY1000	6.9 ± 2.2b	44.3 ± 4ab	37.4 ± 4.6ab	0.017 ± 0.006bc	0.106 ± 0.013bc	0.089 ± 0.01bc
	SY63	15 ± 3a	49.6 ± 4.3a	34.6 ± 5.3ab	0.075 ± 0.016a	0.248 ± 0.021a	0.172 ± 0.023a
	9311	11.9 ± 2.6ab	53.6 ± 3.9a	45.5 ± 4.5a	0.052 ± 0.009a	0.243 ± 0.005a	0.205 ± 0.021a
	XS134	−3.3 ± 3.4c	17.1 ± 4.4d	20.3 ± 6.4c	−0.014 ± 0.014d	0.075 ± 0.018 cd	0.089 ± 0.026bc
	YY538	−0.4 ± 2.4c	25.8 ± 4.7 cd	26.2 ± 4.1bc	−0.001 ± 0.006 cd	0.06 ± 0.009d	0.062 ± 0.011c
	YY17	9.3 ± 3.1ab	36 ± 5.8bc	26.8 ± 5.6bc	0.024 ± 0.009b	0.091 ± 0.01 cd	0.068 ± 0.01c

Data presented are mean values with s.d. (n = 3 in year 2015; n = 5 in year 2016). Data followed by different letters are statistically different at p-value < 0.05

ISSN: 1746-4811