-60- 



Conclus ions » 



One of the aims of this study ¥/as to obtain 



sal t; and 

 evidence as to what set of /salt proportions and what 



teraperatxc'e might give the most rapid germination of wheat/ 

 ■Hi early / 



and^most favorable /growth of the seedlings, so that 



definite recomjuendatlon might be niade for the preparation 

 of seedlings for solution cultures such as those outlined 

 in the "Plan for Gobperatlve Research." As far as the 

 results of these tests bear on the question, it msy be 

 said that of the 126 different solutions tested, no one 

 is clearly and definitely more promising than any other, 

 fctr the total concentration tere used (equivalent to 

 about 0.1 atm. /osmotic pressure) and for the first fo\xr 

 or five days after the dry --.r^.:^^ seed is placed in contact 

 with the medium. -Ithin the limits set by the Innate vari- 

 ability/ of the seed used, it r^iust be concluded that the 

 percentage' of germination and the rapidity of shoot 

 elongation v.-ere not measurably Influenced by the solution 

 tjTje or the salt proportions in these tests, ITils appears 

 to mean that.v/ith seed such as this and with the total solution 

 concentration here used, all of the 126 solutions tested 

 must be regarded as abor.t alike, within the ordinary 

 temperature range for wheat growth, in their suitability for 

 promoting the development of seedlings 4 — 5 cm. high. 



