Botanical Gazette, Volumen40John Merle Coulter, M. S. Coulter, Charles Reid Barnes, Joseph Charles Arthur University of Chicago Press, 1905 Publishes research in all areas of the plant sciences. |
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Página 13
... the former case the cells were longer and the hairs were not only thus farther separated , but fewer cells produced hairs . millimeter was calculated by multiplying the average length by the 1905 ] 13 SNOW - DEVELOPMENT OF ROOT HAIRS.
... the former case the cells were longer and the hairs were not only thus farther separated , but fewer cells produced hairs . millimeter was calculated by multiplying the average length by the 1905 ] 13 SNOW - DEVELOPMENT OF ROOT HAIRS.
Página 84
... , crosses , Ys , Ts , and rings . The fourfold nature of the group is most clear in the ring form . In fig . 10 a the four daughter chromosomes of the tetrad are shown entirely separated from one another . Fig 84 [ AUGUST BOTANICAL GAZETTE.
... , crosses , Ys , Ts , and rings . The fourfold nature of the group is most clear in the ring form . In fig . 10 a the four daughter chromosomes of the tetrad are shown entirely separated from one another . Fig 84 [ AUGUST BOTANICAL GAZETTE.
Página 85
... separated from one another . Fig . II illustrates another case where the daughter chromosomes of the tetrad are separated . In this figure the two groups are drawn in correct relative positions , the one showing an almost homogenous ...
... separated from one another . Fig . II illustrates another case where the daughter chromosomes of the tetrad are separated . In this figure the two groups are drawn in correct relative positions , the one showing an almost homogenous ...
Página 89
... separation of the daughter chromosomes . The distribution is effected . very quickly , for great numbers of nuclei in metaphase have been observed and a great many in telophase , but very few in anaphase . Little indication is given as ...
... separation of the daughter chromosomes . The distribution is effected . very quickly , for great numbers of nuclei in metaphase have been observed and a great many in telophase , but very few in anaphase . Little indication is given as ...
Página 90
... separation of the spores is complete ( fig . 26 ) . The contiguous walls split apart and the spores become free . They next increase in size , becoming almost spherical , and the wall thickens and is finally marked with delicate points ...
... separation of the spores is complete ( fig . 26 ) . The contiguous walls split apart and the spores become free . They next increase in size , becoming almost spherical , and the wall thickens and is finally marked with delicate points ...
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acid algae apex appear ascus BOTANICAL GAZETTE branches buds cents CHICAGO PRESS chromatin chromosomes color cotyledons cultures curves dark described dishes division embryo sac endosperm endospore enzyme exospore experiments flora flowers formation gametophyte genus germination glass growing growth hairs holdfasts hyphae Hypocrea alutacea illustrated laboratory Lake Lantern Slides later layer leaf leaves light LITHIA WATER longa longis megaspore mitosis mother cell nitrogen nucleus Oaxaca occur organs oxygen paper peat PIANO plants plates pollen pollen tube postpaid present primordia Professor proteids protoplasm published PUCCINIA removed rhizobia rhizoids roots Salix Sceptridium seedlings seeds shoots shown shrubs societies soil solution species specimens Sphaeria spindle spirem sporangium spore membrane spores stage starch stem substratum surface tamarack temperature tetrad tion tissue transpiration tube Typewriter Ueber University of Chicago vegetation York zone zoospores
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Página 358 - ... at the centre, looking along a radius, and along a side adjacent to it, starting at the centre again, taking the next radius and the next side, say in a right-handed sense of rotation, etc. But this explanation of the phenomenon of seeing the figure as a swastika is of no fundamental interest to us. It is of interest to us only in so far as it helps one to see that the expression "seeing the figure as a swastika...
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