Tao, Guo-Qing; Letham, D Stuart; Yong, Jean; Zhang, Kerong; John, Peter Crook; Schwartz, Owen; Wong, Suan Chin; Farquhar, Graham
The bacterial cytokinin biosynthesis gene ipt under control of a chalcone synthase promoter (PCHS) was introduced into potato (Solanum tuberosum L.). Two transgenic lines were selected for detailed study, because in these, root development was reduced only moderately, thus, enabling the plants to be grown in pots. Expression of the PCHS-ipt gene elevated the level of zeatin cytokinins markedly in the apical bud, subapical stems and leaves. The transgenic (IPT) plants exhibited a lower and...[Show more]
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