Variable seed dormancy and germination in Hibbertia

Variable seed dormancy and germination in <i>Hibbertia</i>

Variable seed dormancy and ger­min­a­tion in Hibbertia

Several eco­lo­gic­ally import­ant plant fam­il­ies in Mediterranean bio­mes have seeds with morpho­physiolo­gical dormancy. Hidayati et al. study four spe­cies of the intract­ably dormant Australian genus Hibbertia (Dilleniaceae) and find that although they are con­gen­eric, sym­patric and pro­duce seeds of identical mor­pho­logy, they show a remark­able level of vari­ation in dormancy-break and ger­min­a­tion require­ments. The res­ults have import­ant implic­a­tions for cur­rent clas­si­fic­a­tion sys­tems of seed dormancy and high­light the dif­fi­culties, and cau­tion required, in extra­pol­at­ing dormancy require­ments in biod­i­verse regions such as the south-west Australian biod­iversity hotspot.

Annals of Botany Office.

The Annals of Botany Office is based at the University of Leicester.

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