Abstract:

The changes of flower color, pigments composition of Lupinus polyphyllus ‘Nanus Russell Gallery Blue’ in five soil pH were studied. The flower color was measured according to the Royal Horticultural Society Colour Chart (RHSCC) and by a NF333 spectrophotometer, respectively. A high performance liquid chromatography (HPLC) with a photodiode array detector (HPLC-PAD) and spectrophotometer were employed for qualitative and quantitative analysis of anthocyanins, flavonols, chlorophyll and carotenoids. The results indicated that the wing L*、a*、C* reduce and b* rise with soil pH reducing，total anthocyanins(TA) and Chlorophyll content increased. TA also increased in the banner, but others content no obvious relativity from different soil pH. That tentatively identified soil pH does effect accumulation of anthocyanins in flower, and effect flower color of L. polyphyllus ‘Nanus Russell Gallery Blue’.