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A study of assimilation and translocation in Cuscuta hyalina Heyne ex Roth., Orobanche ramosa L. and Striga hermonthica Benth.
Author(s) -
ISMAIL A. M. A.,
OBEID M.
Publication year - 1976
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1976.tb00385.x
Subject(s) - striga hermonthica , parasitic plant , biology , botany , striga , orobanche , cuscuta , host (biology) , ecology , germination
Summary: Quantitative determinations of chlorophyll showed that Cuscuta hyalina and Striga hermonthica possess chlorophyll. No trace of chlorophyll was found in Orobanche ramosa. Autoradiographic evidence showed that both radiocarbon and radiophosphorous moved from host to parasite in alt three species. Photosynthesis occurs in S. hermonthica when the parasite is isolated from its host. The adventitious roots of S. hermonthica and O. ramosa appear to be functional in absorbing a proportion of the required inorganic substances and water. S. hermonthica is a hemiparasite, O. ramosa is a holoparasite but C. hyalina is best described as a partial parasite.