18 BULLETIN 306, U. S. DEPAETMENT OF AGEICULTUEE. 



REPRODUCTION OF SELECTED PLANTS FROM CUTTINGS. 



In the fall of 1913 cuttings were secured from the first-generation 

 plants and rooted in the greenhouse. Although the season had been 

 bad and the condition of the cuttings was rather poor, a good per- 

 centage of them rooted and by spring furnished plants 3 to 4 inches 

 high. These were transplanted to the field early in May. The severe 

 drought during that month caused a considerable number of the 

 plants to die, although they had developed a good root system. On 

 August 18, when the flowering was mostly over, the first picking was 

 made. On October 12, after most of the berries were ripe and some 

 new leaves had developed, a second picking was secured. In Table 

 VIII are given the percentages of alkaloids found in each individual 

 plant, the summary of seasonal averages being added at the close. 



Table VIII. — Alkaloids, at two different stages, in the leaves of belladonna plants grown 

 from cuttings from selected parents at Arlington, Va. 





Alkaloidal content (per cent). 



Lot and number. 



Alkaloidal content (per cent). 



Lot and number. 



First 



stage, 



Aug. 18. 



Second 

 stage, 

 Oct. 12. 



Average 



for 

 season. 



First 



stage, 



Aug. 18. 



Second 



stage, 



Oct. 12. 



Average 



for 

 season. 



Lot 6wi: 



5 



0.573 

 .512 



0.491 



.525 



.525 

 .593 

 .496 

 .620 

 .488 

 .749 



0.532 

 .517 



.525 



.659 

 .496 

 .613 

 .546 

 .493 



Lot 6wn— Contd. 

 9 



0.602 

 .871 

 .801 

 .680 



0.613 

 .669 

 .829 

 .420 

 .630 

 .238 

 .537 



0.608 





11 



.770 



2 



12 



.815 





13 



.550 



1 



15 



.630 



2 



.725 



16 



.510 



.374 



3 



17 



.537 



4 



.606 

 .604 

 .837 



19 



.665 







Lot 6W12: 

 2 







6 



.687 



.611 



.649 









.693 



.578 



.634 



.624 

 .731 



.610 



.398 

 .445 



.617 





.573 



.615 

 .585 

 .607 



.522 



.580 

 .343 

 .478 

 .589 

 .315 

 .442 

 .372 



.548 

 .597 

 .464 

 .543 

 .589 

 .315 

 .508 

 .444 



3 



.565 



1 



4 



.445 





Average 



Lot 7w 3 : 



2 







3 



.677 



.484 



.581 







5 



.477 



.429 

 .794 





5 





.453 



7 



.573 

 .516 



5 



.794 





Average 



Lot 7w 4 : 



1 









.477 



.611 



544 



Average 



, . 





.565 







.587 



.567 

 .557 

 .525 

 .666 







.795 

 .745 



.797 

 .749 



.796 



.747 



.577 



1 



2 



.557 



2 



3 



.562 

 .631 



.544 





5 



.648 



Average 



.770 



.773 



.772 



6 





7 



.436 



.669 



.553 



Lot 6W9: 



.770 



.516 



.643 



Average 



Lot 7w 5 : 



1 





6 



.553 



.597 



.575 



Lot 6W10: 



I 



.623 

 .660 



.618 

 .691 



.621 

 .676 





.569 

 .636 

 .784 

 .759 

 .620 

 .700 

 .578 





3 



.569 





2 





.636 



Average 



.641 



.654 



.648 



4 



.584 

 .837 

 .734 

 .639 

 .657 



.684 







.798 



Lot 6wn: 



.774 

 .602 

 .598 

 .682 

 .661 



.653 



.714 

 .602 

 .598 

 .717 

 .718 



6 



.677 



1 



7 



.669 



2 



8 



.668 



5 





Average 





6 



.752 

 .775 



.690 



.664 



.677 



s 













