Ef f ect sofl i ghti nt ens i t y and s oi ls al i ni t y on pi gm ent cont enti n t hel eaveoft wo col or-l eaf ed pl ant s

The i nf l uence on t he l eave col or changi ng of Sambucus canadensi s and Phys ocar pus opul i f ol i us i n l i ght i nt ensi t y and soi lsal i ni t y wer e expl or ed,and t he change l aw ofchl or ophyl l ( chl )and car ot enoi d ( car )cont ent sofSambucus canadensi sand Physocar pusopul i f ol i uswer e anal yzed.The r esul t s showed t hatt he l eafcol orofSambucus canadensi s t ur n gr een af t er20 days undershadi ng t r eat ment ,l eafchl or ophyl lcont ent ( a+b)and car ot enoi d cont entr at i o was 3. 1颐1,whi ch washi ghert han t he r at i o i n t he f i r stday.The l eafcol orofPhysocar pusopul i f ol i ust ur n gr een af t er50 days,l eafchl or ophyl l cont ent ( a+b)and car ot enoi d cont entr at i o was 3. 4颐1,whi ch was hi ghert han t he r at i o i n June.Shadi ng t r eat mentcoul d af f ectt he l eafcol orexpr ess i on ofSambucus canadensi s and Physocar pus opul i f ol i us.Undert hr ee di f f er entsal tt r eat ment s 渊cont r ol ,200 mmol / L,500 mmol / L冤,t he chl or ophyl la cont entofSambucus Canadensi s i ncr eased wi t h i ncr easi ng ofsoi l sal i ni t y,and t he l eafcol orwas gol den yel l ow. The pi gmentchangi ng t r end ofPhysocar pus opul i f ol i us under 200 mmol / L t r eat mentwas consi st entwi t h cont r ol .The chl or ophyl la i ncr eased gr eat l y under hi gh sal tt r eat ment ,and par tofl eafwi l t wasbl ack.