Anthocyanin constitutions of flowers in newly established colored tuberoses (Polianthes)

The anthocyanin constitutions of the flowers of Polianthes tuberosa 'Single ', 'Double', P. howardii and their time hybrids with reddish purple, pale p urple, pale red, reddish pink and orange obtained by the crossings and back crossings were analyzed. Among the parents and hybrids, two white flowered cultivars of P. tuberosa had no anthocyanins. Other hybrids and P. howardii contained anthocyanins i n their petals. The main anthocyanidin in the petals of anthocyanin contain ing flowers was Cyanidin with Which Some hybrids also contained delphinidin . Reddish purple or pale purple flower hybrids contained delphinidin glycos ide with cyanidin glycoside, whereas only cyanidin glycosides were containe d in the flowers of orange, pale red and reddish pink. On the basis of these findings, several aspects for future breeding of tube rose were discussed.