Influence of Environment on Sexual Expression in Hemp

@article{SchaffnerInfluenceOE,
  title={Influence of Environment on Sexual Expression in Hemp},
  author={John Henry Schaffner},
  journal={Botanical Gazette},
  volume={71},
  pages={197 - 219}
}
1. Experimental investigations are of interest in connection with woody plants both from a general biological point of view, and also from the standpoint of plant pathology. They are also of interest because they suggest the possibility of producing ornamental woods experimentally. 2. Three types of rays, aggregate, compound, and diffuse, which persist contemporaneously in Casuarina, are characteristic of angiospermous trees. The aggregate seems to be the more primitive one, from which the… Expand
Sex and Sex-Determination in the Light of Observations and Experiments on Diecious Plants
TLDR
Each one has a multitude of hereditary peculiarities which can not be duplicated in the other, and when the two organisms as to their sexual natures are compared the authors find a most remarkable agreement. Expand
Sex expression in spinach
TLDR
A description of the sexual conditions in spinach is presented, together with results of certain experiments to test the relation of sex expression to ecological and physiological factors. Expand
INFLORESCENCE PATTERNS AND SEXUAL EXPRESSION IN BEGONIA SEMPERFLORENS
TLDR
In Begonia semperftorens, Link & Otto, staminate and pistillate flowers normally occur not merely on the same plant, but in the same inflorescence, and this species in its monoecism may well illustrate one of the stages preceding dioecism. Expand
The Change of Opposite to Alternate Phyllotaxy and Repeated Rejuvenations in Hemp by Means of Changed Photoperiodicity
TLDR
After experimenting with hemp for a number of years and discovering a method of producing quite definite sex reversal, the writer discovered that the expression of the phyllotaxy and other characters, as well as theexpression of the sexual state, could be influenced decidedly. Expand
The Ecological Determination of Twisted Hypocotyl and Other Peculiar Expressions in Hemp
TLDR
A number of extreme and unusual character expressions which do not appear when the plant is grown in the usual or so-called normal conditions are called on. Expand
The Influence of Relative Length of Daylight on the Reversal of Sex in Hemp
TLDR
It will be seen that the problems of sex, sexual expression, and sex reversal apparently continue to be ecological in spite of the more recent trend. Expand
A GENETICAL INTERPRETATION OF THE ORIGIN OF HETEROSPORY AND RELATED CONDITIONS
TLDR
It appears, therefore, that the first differentiation of the spores was one of size, the larger always producing the female gametophyte, as well as the two types of spore derived from one which initially resembled the microspore. Expand
Sporogenesis and Sex Determination in Begonia schmidtiana
The following study of Begonia Schmidtiana Regel was originally undertaken as an investigation in sporogenesis, but because of the remarkable findings it later developed into an investigation of theExpand
THE FLUCTUATION CURVE OF SEX REVERSAL IN STAMINATE HEMP PLANTS INDUCED BY PHOTOPERIODICITY
TLDR
The aim of the present experiments was to obtain, if possible, IOO percent of sex reversal of the staminate plants, including the "supermales," of a given plot to find out how perfect the curve of reversal might be, and also to discover how definitely the percentage of reversal for any seasonal planting might be predicted. Expand
SEX DETERMINATION IN HEMP (OANN.ABIS
  • 2007
UNTIL recently sex determination in hemp was thought to be epigamic, sex being primarily determined by some physiological stimulus at some stage in· development after fertilisation. Schaffner (1921,Expand
...
1
2
3
4
5
...

References

SHOWING 1-4 OF 4 REFERENCES