Inducement of Flowering in Taniers (Xanthosoma spp)

How to Cite

Beale, A. J., Green, Jr., V. E., & Parrado, J. L. (1982). Inducement of Flowering in Taniers (Xanthosoma spp). The Journal of Agriculture of the University of Puerto Rico, 66(2), 115–122.


Tanier has not been improved through breeding because of a lack of uniform flowering in some clones or a lack of flowering in others. Flowering of taniers was induced by foliar application of gibberellic acid (GA3). One foliar application of 250 p/m of GAapplied to 13-week-old plants induced 100% flowering within 19 weeks; three biweekly applications of 500 p/m induced 100% flowering within 15 weeks, and three biweekly applications of 100 p/m induced 88% flowering within 21 weeks of the first application. Both the white-fleshed and yellow-fleshed cultivars were induced to flower. More plants flowered, flowered sooner, and produced more flowers per plant when GA3 plus 6-benzyladenine (BA) was used than when GA3 was used alone. Flowers from the treated plants produced much pollen. Applications of GA3 at 250 p/m or more, either alone or in combination with BA, promoted a branching effect on the cormels. The plant shape in all GA3, and GA3 plus BA treatments was altered. As a result, from three to more than eight auxiliary shoots developed per plant.


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