Abstract
Interspecific crosses of Schiedea and Alsinidendron (Caryophyllaceae), endemic Hawaiian genera, produced segregation patterns of females, males, and hermaphrodites consistent with nuclear control of male sterility. Female excesses, typical in hybrids when mismatches occur between cytoplasmic factors controlling male sterility and nuclear factors restoring fertility, were not observed in any crosses. The nuclear gene controlling expression of the male (or hermaphroditic) sex in Schiedea is dominant; females are homozygous recessives. Results from intraspecific crosses and segregations among progeny raised from field-collected seeds were largely consistent with results obtained from interspecific and intergeneric crosses. In Schiedea gynodioecy is likely to represent an early stage in the evolution of dioecy. The transition from gynodioecy to full dioecy may be a relatively rapid event favoured by nuclear control of male sterility, a view supported by the occurrence of gynodioecy, subdioecy, and dioecy in Schiedea.
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Benjamin, R B, and Hainsworth, F R. 1986. Sex change with inbreeding: experiments on separate versus combined sexes. Evolution, 40, 843–855.
Charlesworth, B. 1984. Genetic constraints in the evolution of plant reproductive systems. In: Gregorius, H.-R. (ed.) Lecture Notes in Biomathematics 60 Population genetics in forestry, Springer-Verlag, Berlin, pp. 155–179.
Charlesworth, B, and Charlesworth, D. 1978. A model for the evolution of dioecy and gynodioecy. Am Nat, 112, 975–997.
Charlesworth, D. 1981. A further study of the problem of the maintenance of females in gynodioecious species. Heredity, 46, 27–39.
Charlesworth, D, and Ganders, F R. 1979. The population genetics of gynodioecy with cytoplasmic-genic malesterility. Heredity, 43, 213–218.
Connor, H E, and Charlesworth, D. 1989. Genetics of male-sterility in gynodioecious Cortaderia (Gramineae). Heredity, 63, 373–382.
Couvet, D, Bonnemaison, F, and Gouyon, P-H. 1986. The maintenance of females among hermaphrodites: the importance of nuclear-cytoplasmic interactions. Heredity, 57, 325–330.
Darwin, C. 1877. The Different Forms of Flowers on Plants of the Same Species. Murray, London.
Dudash, M R. 1990. Relative fitness of selfed and outcrossed progeny in a self-compatible, protandrous species, Sabatia angularis L. (Gentianaceae): A comparison in three environments. Evolution, 44, 1129–1139.
Eckhart, V. 1990. Variation in the fitness consequences of gender in Phacelia linearis, a gynodioecious annual. Bull Eco Soc, Am, 71, (Suppl.), 144.
Frank, S A. 1989. The evolutionary dynamics of cytoplasmic male sterility. Am Nat, 133, 345–376.
Ganders, F R. 1978. The genetics and evolution of gynodioecy in Nemophila menziesii. Can J Bot, 56, 1400–1408.
Gouyon, P-H, and Couvet, D. 1985. Selfish cytoplasm and adaptation: variations in the reproductive system of thyme. In: Haeck, J. and Woldendorp, J. W. (eds), Structure and Functioning of Plant Populations, 2, North-Holland Publishing Co., Amsterdam, pp. 299–319.
Kheyr-Pour, A. 1981. Wide nucleo-cytoplasmic polymorphism for male sterility in Origanum vulgare L. Heredity, 72, 45–51.
Kohn, J. 1988. Why be female? Nature, 335, 431–433.
Lloyd, D G. 1976. The transmission of genes via pollen and ovules in gynodioecious angiosperms. Theor Pop Biol, 9, 299–316.
Ross, M D. 1978. The evolution of gynodioecy and subdioecy. Evolution, 32, 174–188.
Sakai, A K, Karoly, K, and Weller, S G. 1989. Inbreeding depression in Schiedea globosa and S. salicaria (Carophyllaceae), subdioecious and gynodioecious Hawaiian species. Am J Bot, 76, 437–444.
Schemske, D W. 1983. Breeding system and habitat effects on fitness components in three neotropical Costus (Zingiberaceae). Evolution, 37, 523–539.
Sokal, R R, and Rohlf, F J. 1981. Biometry, 2nd edn. Freeman and Co., New York.
Sun, M. 1987. Genetics of gynodioecy in Hawaiian Bidens (Asteraceae). Heredity, 59, 327–336.
Van Damme, J M M. 1983. Gynodioecy in Plantago lanceolata L. II Inheritance of three male sterility types. Heredity, 50, 253–273.
Van Damme, J M M, and Van Delden, W. 1982. Gynodioecy in Plantago lanceolata L. I. Polymorphism for plasmon type. Heredity, 49, 303–318.
Weller, S G, Sakai, A K, Wagner, W L, and Herbst, D R. 1990. Evolution of dioecy in Schiedea (Caryophyllaceae: Alsinoideae) in the Hawaiian Islands: Biogeographical and Ecological Factors. Syst Bot, 15, 266–276.
Weller, S G, and Sakai, A K. (1990). The evolution of dicliny in Schiedea (Caryophyllaceae), an endemic Hawaiian genus. Plant Sp Biol, 5, 83–95.
Acknowledgements
Acknowledgements We thank Tim Flynn, Derral Herbst, Bob Hobdy, Steve Perlman, and John Obata for providing seeds and help in locating populations. Kathleen Brum, Dorothea Harvey, Carol Rincon, Nichole Brough, and Mamie Mitchell cared for the plants in the greenhouse. Joanna Norman, Denise Porter, Steve Porter, Kurt Potgieter, and Melissa Yu assisted in carrying out crosses and scoring offspring. We thank Brian and Deborah Charlesworth for their encouragement, and Deborah Charlesworth and Steven Frank for manuscript review. This research was supported by the National Geographic Society (3643-87) and the National Science Foundation (BSR-8817616).
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Weller, S., Sakai, A. The genetic basis of male sterility in Schiedea (Caryophyllaceae), an endemic Hawaiian genus. Heredity 67, 265–273 (1991). https://doi.org/10.1038/hdy.1991.89
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DOI: https://doi.org/10.1038/hdy.1991.89
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