Science, Volumen51John Michels (Journalist) American Association for the Advancement of Science, 1920 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Página 376
... zygospores are common and may be obtained from the sowing of a single vegetative spore . Such forms are therefore hermaphroditic or homothallic since their thalli or mycelia are alike sexually . In the second group , repre- 2 Citations ...
... zygospores are common and may be obtained from the sowing of a single vegetative spore . Such forms are therefore hermaphroditic or homothallic since their thalli or mycelia are alike sexually . In the second group , repre- 2 Citations ...
Página 377
... zygospores formed where the opposite sexes meet as shown in Figs . 52-55 . IMPERFECT HYBRIDIZATION It was soon established that in any given diecious species there are only two sexes present but at first there was no assurance that the ...
... zygospores formed where the opposite sexes meet as shown in Figs . 52-55 . IMPERFECT HYBRIDIZATION It was soon established that in any given diecious species there are only two sexes present but at first there was no assurance that the ...
Página 378
... zygospores with its normal mate in its own species . Thus Cunninghamella echinulata will readily give " imperfect hybridization " reactions with species of the genus Mucor at temperatures below 20 ° C. but will not itself form zygospores ...
... zygospores with its normal mate in its own species . Thus Cunninghamella echinulata will readily give " imperfect hybridization " reactions with species of the genus Mucor at temperatures below 20 ° C. but will not itself form zygospores ...
Página 379
... ZYGOSPORE GERMINATION It will be of interest to note what occurs at the germination of zygospores formed by the sexual races . A zygospore at germination produces a short germ - tube , terminated by a germ sporangium . The condition is ...
... ZYGOSPORE GERMINATION It will be of interest to note what occurs at the germination of zygospores formed by the sexual races . A zygospore at germination produces a short germ - tube , terminated by a germ sporangium . The condition is ...
Página 380
... zygospores are formed only above 20 ° C. Certain other species will not form zygospores , although able to produce sporangia at a temperature as high as 26 ° C. Further examples of other factors than tem- perature might be given in ...
... zygospores are formed only above 20 ° C. Certain other species will not form zygospores , although able to produce sporangia at a temperature as high as 26 ° C. Further examples of other factors than tem- perature might be given in ...
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