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DISCOVERY OF A FERTILE PELAGOPHYCUS × MACROCYSTIS (PHAEOPHYTA) PUTATIVE HYBRID AND SUBSEQUENT PRODUCTION OF F 2 SPOROPHYTES IN THE LABORATORY 1
Author(s) -
Coyer James A.,
Engle John M.,
Zimmerman Richard C.
Publication year - 1992
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1992.00127.x
Subject(s) - sporophyte , biology , gametophyte , macrocystis pyrifera , spore , botany , germination , stipe (mycology) , thallus , frond , kelp , pollen
A fertile putative hybrid of Pelagophycus porra (Lem.)Setch. × Macrocystis pyrifera (L.) was discovered in Big Fisherman Cove, Santa Catalina Island, California, in March 1986. The plant possessed a single, solid primary stipe that bifurcated into two secondary stipes, each with a hooked‐shaped pneumatocyst. A total of 15 blades, 14 with sori, were produced on two to three dichotomies above and below each pneumatocyst. Gametophyte development of spores released from sori and the resulting early sporophtes (2–3 mm) were typical of Laminariales. Gametophytes appeared within a day of spore germination, 500‐cell stage sporophytts within 3–4 weeks, and 2–3 mm sporophytes within 5–6 weeks. The cultures expired before branching patterns could be determined.