Abstract
Photoperiodic responses among populations ofXanthium strumarium L. in eastern Asia from Vladivostok, USSR, to Hong Kong and Taiwan include a wide range of adaptation. Among indigenous populations of thestrumarium morphological complex, responses range from near day neutrality (Vladivostok) to approximately a night length requirement of 9.5 hr (Hong Kong). Introduced populations in Japan include a night length requirement of 9.75 hr in theitalicum morphological complex and of 10.25–10.5 hr in thechinense morphological complex. The range of photoperiodic adaptation is nearly as wide as among populations of North America.
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References
Kaul, V. 1971. Physiological-ecology ofXanthium strumarium Linn. IV. Effect of climatic factors on growth and distribution. New Phytol.70: 799–812.
Löve, D. andP. Dansereau. 1959. Biosystematic studies onXanthium: taxonomic appraisal and ecological status. Can. J. Bot.37: 173–207.
McMillan, C. 1970. Photoperiod inXanthium populations from Texas and Mexico. Amer. J. Bot.57: 881–888.
— 1971. Photoperiod evidence in the introduction ofXanthium (cocklebur) to Australia. Science171: 1029–1031.
— 1972. Photoperiod and chemical evidence of the introduction to India ofXanthium from America. Nature (London)240: 485–486.
— 1973a. Partial fertility of artfiicial hybrids between Asiastic and American cockleburs (Xanthium strumarium L.). Nature, New Biology246: 151–153.
— 1973b. Photoperiodic adaptation in desert populations ofXanthium strumarium. Amer. J. Bot.60: 397–405.
— 1973c. Photoperiodic adaptation inXanthium strumarium populations introduced to Australia. Can. J. Bot.51: 221–229.
— 1973b. Photoperiodic evidence in the introduction ofXanthium strumarium to Tihiti and Hawaii from Mexico. Amer. J. Bot.60: 277–282.
— 1974a. Photoperiodic responses in experimental hybrids of cockeburns. Nature (London)249: 183–186.
— 1974b. Experimental hybridization inXanthium strumarium of American complexes with diverse photoperiodic adaptation. Can. J. Bot.52: 849–859.
McMillan, C. Photoperiodic adaptation ofXanthium strumarium in Europe, Asia Minor, and northern Africa. Can. J. Bot. (In press a).
McMillan, C. Experimental hybridization ofXanthium strumarium from Asia and America. I. Response of F1 hybrids to photoperiod and temperature. Amer. J. Bot. (In press b).
Millspaugh, C.F. andE.E. Sherff. 1919. Revision of the North American species ofXanthium. Field Museum Nat. Hist. Publ. 204, Bot. Ser. IV: 9–49.
Minato, H. andI. Horibe. 1954. Studies on sesquiterpenoids. Part XI. Structure and stereochemistry of xanthumin, a steroisomer of xanthinin. J. Chem. Soc.1965: 7009–7017.
Ray, P.M. andW.E. Alexander. 1966. Photoperiodic adaptation to latitude inXanthium strumarium. Amer. J. Bot.43: 806–816.
Widder, F.J. 1923. Die Arten der GattungXanthium. In Reprium Nov. Spec. Regni Veg.20: 1–222.
— 1972. Das nordamerikanischeXanthium pungens Wallroth als Adventivpflanze anderer Kontinente. Bot. Notiser.125: 389–392.
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McMillan, C. Photoperiodic responses ofXanthium strumarium L. (Compositae) introduced and indigenous in eastern asia. Bot Mag Tokyo 87, 261–269 (1974). https://doi.org/10.1007/BF02489302
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DOI: https://doi.org/10.1007/BF02489302