Self-incompatibility of sweet potato (Ipomoea batatas (L.) Lam.). A Review

Alfredo Morales Rodríguez, Dania Rodríguez del Sol, Xie Yi Zhi, Guo Xiao Ding, Jia Zhao Dong, Ma Pei Yong, Bian Xiao Feng


The presence of self-incompatibility has been a barrier in crossbreeding of sweet potato due to the limitations in the choice of parental cultivars. Self-incompatibility in this crop has been a topic widely researched by different scientists around the world. Ipomoea batatas presents a multi-allelic, sporophytic type self-incompatibility system and there have been identified a total of 49 different S-alleles in the wild populations of I. trifida. The objective of this work is to collect, reconstruct and clarify important aspects of self-incompatibility of sweet potato, as well as to define the nature of the genetic control mechanism of incompatibility more precisely and define understanding criteria of accumulated knowledge.

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