26 



TEANSLOCATION" OF PLANT FOOD IN WHEAT SEEDLINGS. 



for the production of pentosans in the axes. Besides this amount, 

 however, which has been translocated to the plant, there has been 

 produced in the axes, through assimilation, an amount equal to 50 

 per cent of the original amount in the seed, produced in all probability 

 at the expense of the sugars. 



Table 11. — Pentosans found in residual seeds and axes when grown in solutions contain- 

 ing one nutrient. 



Parts of plant and 

 age. 



Control solution. 



Potash solution. 



Weight 

 of 100. 



Pentosans. 



Grams. 



Per 

 cent. 



Weight 

 of 100. 



Pentosans. 



Grams. 



Per 

 cent. 



Phosphoric acid solution. 



Weight 

 of 100. 



Pentosans. 



Grams. 



Per 

 cent. 



Original seed. 



Seeds: 



5 days.. 

 7 days.. 

 9 days.. 

 12 days.. 

 15 days.. 

 Axes: 



5 days. . 



7 days.. 



9 days. . 



12 days.. 



15 days.. 



Total plants: 



5 days.. 



7 days. . 



9 days.. 



12 days.. 



15 days.. 



Grams. 

 3.50 



1.3S0 

 .929 

 .616 

 .360 



1.126 

 1.343 

 1.540 

 1.564 

 1.480 



3.002 

 2.723 

 2.469 

 2.180 

 1.840 



0. 2561 



.2054 

 .1853 

 .1782 

 .1297 

 .1120 



.1377 

 .1729 

 .2526 

 .2755 

 .2596 



.3431 

 .3582 

 .4308 

 .4052 

 .3716 



7.3 



10. 

 13.4 I 

 19.2 

 21.1 

 31.1 I 



12.3 

 12.9 

 16.4 

 17.8 

 17.6 



11.4 

 13.2 

 17.4 

 18.6 

 20.2 



Grams. 

 3.50 



1.960 



1.481 



1.040 



.698 



.384 



1.100 

 1.424 

 1.514 

 1.729 

 1.773 



3.066 

 2.905 

 2.554 

 2.427 

 2.157 



0. 2561 



2176 

 2054 

 1853 

 1660 

 1280 



1315 



1896 

 2964 

 ,2578 

 ,2789 



,3491 

 ,3950 

 ,4817 

 ,4238 

 ,4069 



7.3 



11.1 ! 

 13.9 I 



17.8 I 

 23.8 ' 



33.3 ; 



11.9 

 13.4 

 19.6 

 14.9 

 15.8 



11.4 

 13.6 

 18.9 

 17.5 

 18.9 



Grams. 

 3.50 



1.738 



1.291 



.796 



.488 



.359 



1.195 

 1.552 

 1.948 

 1.762 

 1.873 



2.933 

 2.843 

 2.744 

 2.250 

 2.132 



0. 2561 



.2203 

 .1887 

 .1738 

 .1395 

 .1138 



.1306 

 .2168 

 1 . 4764 

 .2930 

 .3021 



.3509 

 .4055 

 1 . 6502 

 .4325 

 .4159 



7.3 



12.7 

 14.7 

 21.9 

 28.7 

 31.4 



11.0 

 14.0 

 24.4 

 16.6 

 16.1 



12.0 

 14.3 

 23.7 

 19.2 

 19.5 



Control solution. 



Nitrate solution. 



Complete solution. 



Parts of plant and 

 age. 



Weight 

 of 100. 



Pentosans. 



Grams. 



Per 

 cent. 



Weight 

 of 100. 



Pentosans. 



Grams. 



Per 

 cent. 



Weight 

 of 100. 



Pentosans. J 



Grams. 



Per 

 cent. 



Original seed . 



Seeds: 



5 days... 



7 days... 



9 davs... 



. 12 days... 



15 days... 



Axes: 



5 days.., 



7 days... 



9 days... 



12 days... 



15 days . . . 



Total plants: 



5 days. . , 



7 days... 



9 days. . , 



12 days.., 



15 days . . 



Grams. 

 3.50 



2.121 



1.568 



1.210 



.714 



.596 



1.010 

 1.232 

 1.481 

 1.330 

 1.481 



3.131 

 2.800 

 2.691 

 2.044 

 2.077 



0.2561 



.2124 

 .2124 

 .1922 

 .1738 

 .1369 



.1201 

 .1747 

 .2046 

 .2473 

 ,2300 



.3325 

 .3871 

 .3968 

 ,4211 

 ,3669 



7.3 



10.0 

 13.5 

 15.9 

 24.3 

 23.0 



11.9 

 14.2 

 13.8 

 18.6 

 15.5 



10.6 

 13.8 

 14.7 

 20.6 

 17.7 



Grams. 

 3.50 



2. 070 



1.409 



.934 



.561 



.463 



.957 

 1.230 

 1.552 

 1.666 

 1.713 



3.027 

 2.639 

 2.486 

 2.227 

 2.176 



0. 2561 



,2185 

 ,1983 

 ,1844 

 ,1430 

 ,1103 



,1103 

 ,1747 

 ,2435 

 , 3090 

 ,2631 



,3288 

 ,3730 

 ,4279 

 ,4520 

 ,3734 



7.3 



10.5 

 14.1 

 19.8 

 25.5 

 18.5 



11.5 

 14.2 

 15.7 

 18.5 

 15.4 



10.9 

 14.1 

 17.2 

 20.3 

 17.2 



Grams. 

 3.50 



2.074 



1.422 



1.012 



.490 



1.139 

 1.415 

 1.635 

 1.900 

 1.909 



3.213 

 2.837 

 2.647 

 2.390 

 2.407 



0. 2561 



,2256 

 2019 

 ,1808 

 ,1598 

 ,1192 



1395 

 1957 

 2429 

 2499 



.3651 

 .3976 

 .4237 

 .4097 

 ,3885 



10.9 

 14.2 

 17.9 

 32.6 

 23.9 



12.2 

 13.8 

 14.9 

 13.2 

 14.2 



11.4 

 14.0 

 16.0 

 17.1 

 16.0 



Probable error; no sample for check analyses. 



