370 



Reed : The mildews of the cereals 



TABLE XVIIL Results with Trittcum die 



cecum Schrank 



.^ — Continued 



U^ 4-* 



o c 







s 



(ft 



St? 







u 



1 

 1 



Results 









rt ^-.. 



rt 4J 



c 







4) C 



Date 



] 



Source of conidia 



Age 6f p' 

 (days 



N 0. of p 

 inocula 







u 



1 







Numb 

 ex peril 



Date 



igo8 



Tnoc, 



plants 



Controls 



.-. w 1 



1908 



r 



i 







57b» 



Feb. I 



Trittawi Spelta 



8 



4 



5 



Feb. 10 





— 



69c9 



" 10 



<c ce 



9 



2 



3 



a J7 



^10 



_ 



95b9 



Mar. 3 



(( << 



7 



3 



3 



Mar. 10 







49b» 



Jan. 24 



Triticum vulgare 



10 



4 



2 



Jan, 30 





1 



5ob9 



'' 24 



a (( 



10 



3 



2 



" 30 







S4a« 



" 24 



4 



10 



3 



3 



" 30 



t 





89b® 



Feb. 22 



ii << 



9 



4 



•4 



Feb. 29 



, 





90h« 



'* 22 



1 



1 



9 



3 



3 



" 29 



^ -H 





96a^ Mar. 3 



u is 



7 



3 



3 



Mar. 10 







97b9 ** 3 



i< cc 



7 



3 



3 



" 10 







lOJC^ 



May 16 i 



cf ii 



10 



2 



I 



May 24 



+ +" 





104c® 



*' 30 



i 



6 



2 



3 



June 10 







108c'' July 7 



<< <c 



4 



3 



2 



July 14 



^^^^ 



1 



i43a^ 1 Oct. 31 



u <«- 



7 



5 



9 



Nov. 7 









1 65 a' 



Nov. 20 



(C (( 



6 



5 



5 



'' 26 







185c' 



a 27 



<< << 



13 



212 



I 



^ ^"-^»-rf 



i Dec. 5 





^ Triticum sativtun dicoccum Hackel. 

 ^ Black Winter Emmer. 

 ^Two leaves of each plant inoculated. 

 *A slight infection of one control plant, 

 ^ Red Emmer. 

 * Common Emmer. 

 ' Russian Emmer. 

 One seedling had a different appearance from the others and was well infected 



with the mildew. Evidently the seedling was not a plant of Russian Emmer. 



^ White Emmer. 



^*Slight discolored areas were present on one of the inoculated leaves. ' 

 ^'A good infection of one leaf of one plant, the mildew appearing on the leaf- 

 sheath and the lower portion of the blade. 



"The second leaf and sheath of each plant inoculated. 



Five varieties of Emmer {Triiiciini dicoccum) were tested with 

 the wheat mildew. As seen from the table, two varieties (Black 

 Emmer and Red Emmer) were entirely susceptible to the mildew. 

 Every plant inoculated became infected, and the growth of the 

 fungus was as vigorous as ever appeared upon wheat. The other 

 three varieties (White Emmer, Common Emmer, and Russian 

 Emmer) proved quite resistant to the mildew. Out of forty-four 

 leaves of Common Emmer inoculated, four showed infection. Out 

 of sixty-seven leaves of White Emmer inoculated, three became 

 infected ; and none of the twenty-seven plants of Russian Emmer 



