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Studies on the Gender and Breeding System of Kadua Haupuensis (Rubiaceae), an Endemic Species from Kaua'i, Hawaiian Islands

出版	National Tropical Botanical Garden, 2017
URL	http://books.google.com.hk/books?id=5Ct3swEACAAJ&hl=&source=gbs_api

註釋"The breeding system of Kadua haupuensis (Rubiaceae), an endangered endemic plant species from Kaua'i, Hawaiian Islands, is described in detail by examining a population of 10 genotypes grown from wild collected seed. Measurements of floral parts of 5-10 flowers from each individual were recorded and two morphological flower types were found. The occurrence of pollen and of seed capsules (in open pollination), the number of capsules produced, and the germination of seeds were recorded and two phenotypes were evident, females and hermaphrodites. The gender of the progeny of the females was 1:1 hermaphrodites to females, and that of the hermaphrodites was 3:1 hermaphrodites to females. The implications of these measurements for the characterization of the breeding system and the stability and resistance to extinction of Kadua haupuensis are discussed. Knowledge of rare plant breeding systems will inform conservation strategies and out-planting programs and may suggest that relict in situ populations with similar breeding systems require particular vigilance"--Page 1.