Results 131 to 140 of about 455 (164)
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The fine structure of fern root cells showing apospory
Developmental Biology, 1970Abstract Isolated roots of the fern, Pteridium aquilinum were grown on growth-supporting medium (White's plus 5% coconut milk) and on apospory-promoting medium (Knudson's inorganic salts with or without 10−7 M kinetin). In the latter medium growth of the root ceased and diploid gametophytes were formed in 8 to 10 weeks from outer cells of the root ...
M H, Munroe, P R, Bell
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A Study of Apospory in Pteridium aquilinum
American Fern Journal, 1949thesis on the Ferns of Quebec,7 Brother Marie-Victorin included this fern, remarking that since it occurs in Vermont almost up to the Canadian boundary, it is surely present in Quebec also. Although this was doubted by others, the fern was later discovered near Bedford, in Quebec a few miles north of the Vermont border, as reported by Mousley.8 In ...
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The cytohistological basis of apospory in Hypericum perforatum L.
Sexual Plant Reproduction, 2010St. John's wort (Hypericum perforatum L., 2n = 4x = 32) is a medicinal plant that produces pharmaceutically important metabolites with antidepressive, anticancer and antiviral activities. It is also regarded as a serious weed in many countries. H. perforatum is furthermore an attractive model system for the study of apomixis.
G, Galla +5 more
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Parthenogenesis, apogamy and apospory in Alaria crassifolia (Laminariales)
Marine Biology, 1973In cultures of Alaria crassifolia Kjellman, unfertilized eggs developed normally into haploid sporophytes which differentiated into a holdfast, stipe and blade with a midrib. The terminal cells of a male gametophyte grew apogamously into haploid sporophytes with narrow blades which lack the midrib.
H. Nakahara, Y. Nakamura
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Laboratory-Induced Apogamy and Apospory in Ceratopteris richardii
2010All land plants progress through a life cycle that alternates between two multicellular generations, the haploid gametophyte and the diploid sporophyte. The lifespan and autotrophy of the two generations have evolved from bryophytes to seed plants in opposite directions: the sporophyte generation became long-lived and autotrophic whereas the ...
Angela R. Cordle +3 more
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Environmental and Genetic Factors Affecting Apospory Expressivity in Diploid Paspalum rufum
Plants, 2021Juliana Stein +2 more
exaly
Spotting the Targets of the Apospory Controller TGS1 in Paspalum notatum
Plants, 2022Maricel Podio +2 more
exaly
Experimental Studies of Apospory in Ferns
Annals of Botany, 1981E. SHEFFIELD, P. R. BELL
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