Fruwirth: Selection in Pure Lines 



93 



the i^lus-serics and minus-series should 

 deviate more and more from each other. 

 When in my experiments, therefore, 

 one c;;eneration sometimes shows a 

 higher per cent of bristles in the plus- 

 series and a lower per cent in the minus- 

 series than the previous generation 

 showed, I think I am justified in calling 

 this a non-inherited character of the 

 parent, and by no means an indication 

 of any change in the inherited factors. 

 Similar effects have been observed in 

 the trials with the Puy lentil and with 

 white mustard, an increase in coloring 

 of seeds being gained in one generation 

 but not augmented in the next. I have 

 called such an effect iibertragung — 

 transmission. 



Similar effects have been observed 

 with oats in the selection to augment 



or tliniinish the |)er cent of hairs per 

 l)lant. 



3. An internal or iDcrformance-char- 

 actcr has also been studied in the same 

 manner in oats: the character being 

 the per cent production of one-kernelled 

 or two-kernelled spikelets per plant. I 

 have measured this character in terms 

 of the per cent of two-kernelled spike- 

 lets. The results are given in the 

 accompanying Table II. 



The remarks to be made regarding 

 this table are substantially the same as 

 with the preceding one. 



Just as I was closing my experiments 

 and publishing their results in full, with 

 remarks on several other subjects, in 

 the Zeitschrift flir Pfianzenziichtung^'^ 

 (1915), Kiessling at Weihenstephan 

 reported on his trials with two-rowed 



"Zeitschrift fur Pflanzenziichtung, 1915. Heft 2. 



