Allelic variation within the S-adenosyl-L-homocysteine hydrolase gene family is associated with wood properties in Chinese white poplar (Populus tomentosa)

Table 5 Significant SNP associations identified in PtoSAHHA and PtoSAHHB using association-linkage analyses

Trait	Locus	Position	mutation	Association population (N= 460)			Linkage population (N= 1,200)
				P-value	Q-value	R² (%)	P-value	Q-value	Alleles of parents ¹	R² (%)
α-cellulose
	PtoSAHHB_1065	Intron 1	[A : G]^nc	0.0007	0.0299	4.00	0.0069	0.0893	[AA : AG]	2.82
	PtoSAHHA_2203	3'-UTR	[G : T]^nc	0.0064	0.0675	1.76	0.0015	0.0490	[GT : GT]	3.60
Holocellulose
	PtoSAHHA_1196	Intron 1	[C : T]^nc	0.0056	0.0602	1.80	/	/	/	/
	PtoSAHHA_1028	Intron 1	[A : T]^nc	0.0065	0.0675	1.73	0.0129	Q >0.10	[AT : TT]	1.55
Fiber length
	PtoSAHHB_410	Exon 1	[G : A]^ns	0.0001	0.0210	3.04	0.0013	0.0490	[GA : GA]	3.00
Tree height (H)
	PtoSAHHB_618	Exon 1	[A : C]^s	0.0004	0.0299	3.46	/	/	/	/
	PtoSAHHA_1313	Intron 1	[A : T]^nc	0.0040	0.0521	1.94	0.0104	Q >0.10	[AT : AT]	0.98
Stem volume (V)
	PtoSAHHA_2021	Exon 2	[A : T]^ns	0.0018	0.0480	2.27	/	/	/	/

R² = percentage of phenotypic variance explained; Q-value = correction for multiple tests [FDR (Q) ≤ 0.10];nonsynonymous polymorphism (ns); synonymous polymorphism (s); noncoding polymorphism (nc); /, no data were identified in this study;
¹Alleles of parents [female : male].

ISSN: 2730-6844