CONTAMINATION OF lWVU,!J lZMX4TA SEEDS IN CALIFORNTA BY FUSARluM CIRCYNATUM
نویسنده
چکیده
The pitch canker fhgus, Fusarium circinatum (= F. SubgIutinans f sp. pini), causes several serious diseases of pines. The pathogen infects a variety of vegetative and reproductive pine structures at diierent stages of maturity and produces a diversity of symptoms. In addition to producing resinous cankers on the woody vegetative structures of its pine host, the causal fungus causes the mortality of female flowers and mature cones, deteriorates seeds of several pine species, and can cause mortality of seedlings in nurseries. Since 1986, pitch canker has been epidemic in California on Pinw radiata (Monterey pine) and has all the earmarks of an introduced disease.
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