13 Seed desiccation tolerance and dormancy of three endangered New Zealand species: Carmichaelia williamsii, Clianthus puniceus and Hibiscus diversifolius M.J. PARK1,3, C.R. MCGILL1, W.M. WILLIAMS2 and B.R. MACKAY1 1Institute of Natural Resources, College of Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand 2Margot Forde Forage Germplasm Centre, AgResearch Grasslands, Private Bag 11-008, Palmerston North, New Zealand 3Korea Seed & Variety Service, Anyang-Si Gyeonggi-do, Republic of Korea
[email protected] Abstract conventional conditions, the loss of At least one third of New Zealand’s dormancy of C. puniceus at very low indigenous plant species are threatened with moisture contents is of concern. More work extinction and strategies for conserving is needed to confirm the long-term storage endangered flora are urgently required. One behaviour of these species. strategy is to use ex situ seed storage as a Keywords: ex situ conservation, seed complement to in situ conservation. storage behaviour, New Zealand flora Successful ex situ storage of seed requires knowledge of the seed storage behaviour, Introduction optimal storage conditions and germination New Zealand possesses a unique and requirements of the species being stored. diverse flora of 2,300-2,470 taxa, with most For many threatened species, however, this species (80%) being endemic (Dopson et al. information is either incomplete or 1999). Currently 34% of these taxa are unavailable. In this study, preliminary classified as threatened or naturally experiments were conducted with three uncommon, with 11 presumed to be extinct threatened species, Carmichaelia williamsii, (Warmington et al.