Figure 5.

Impact of GA20ox expression under the control of the chimeric STLS1/CaMV 35S promoter on potato tuber sprouting and sprout development. A, Sprouting behavior of wild-type (WT) and GA20ox-expressing tubers was monitored over 14 weeks until all tubers had started sprouting. Tubers were stored at room temperature in darkness (n = 30–45). B, Phenotypic changes of tuber sprouts from STLS1/35S:GA20ox transgenic lines 17, 27, and 47 compared with the wild type. Photographs of two representative tubers per line were taken 14 weeks after harvest. [See online article for color version of this figure.]