Natural Sequence Variations and Combinations of GNP1 and NAL1 Determine the Grain Number per Panicle in Rice

Rice

Table 4 Performance of three homozygous transgenic lines under nature conditions

Generation	Genotype	FLL	FLW	PH	EPN	GNP	TGW	GYP	+% CK	+% NAL1	+% GNP1
T₂	Nongken58	21.3b	1.0b	69.4c	19.0a	58.2c	–	–
	NAL1(+)	24.5ab	1.3a	86.1b	15.7b	73.7b	–	–
	GNP1(+)	27.1a	1.0b	83.2b	18.3a	68.1b	–	–
	GNP1 + NAL1(+)	28.6a	1.3a	93.5a	19.1a	85.4a	–	–
T₃	Nongken58	18.3b	1.0b	69.7c	15.1a	50.2c	27.1a	434.7
	NAL1(+)	22.5a	1.3a	81.6b	12.8b	59.4b	27.5a	446.3	2.7
	GNP1(+)	23.2a	1.0b	79.4b	14.9a	57.9b	26.2ab	460.1	5.8
	GNP1 + NAL1(+)	26.6a	1.4a	96.1a	15.4a	66.9a	25.4b	501.4	15.3	12.3	9.0
T₄	Nongken58	23.3b	1.2b	96.0c	13.5a	70.7c	26.2a	530.3
	NAL1(+)	30.6a	1.5a	107.6b	10.9b	90.6b	26.8a	553.9	4.5
	GNP1(+)	32.4a	1.2b	110.6b	12.6ab	86.2b	25.8ab	567.2	7.0
	GNP1 + NAL1(+)	34.6a	1.5a	117.8a	13.0a	101.1a	24.8b	599.7	13.1	8.3	5.7

(+) indicate transgene-positive, CK Nongken58, GNP grain number per panicle, EPN effective panicle number per plant, TGW thousand grain weight (g), FLL flag leaf length (cm), FLW flag leaf width (cm), PH plant height (cm), GYP grain yield per plant (g/m²)
Letters are ranked by Duncan’s test at P < 0.05