. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 16 BULLETIN 306, IT. S. DEPARTMENT OF AGRICULTURE. rich stage was reached, and consequently the second picking, Sep- tember 5, corresponds very closely to the first picking at Arlington \.70 \.â¬0 ife I I I I I I â I I I 111 I I I I 3 3* £ 71V â¬W 3 3* 2 7W 6W 3 30 2 7W 6tV r/Mfr70//3WLL£, Fig. 9.âDiagram showing the alkaloidal content of the leaves of second-generation belladonna plants from cross-pollinated parents at two stages of growth at Arlington, Va., and Madison, Wis., and at one stage of growth at Timm
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 16 BULLETIN 306, IT. S. DEPARTMENT OF AGRICULTURE. rich stage was reached, and consequently the second picking, Sep- tember 5, corresponds very closely to the first picking at Arlington \.70 \.â¬0 ife I I I I I I â I I I 111 I I I I 3 3* £ 71V â¬W 3 3* 2 7W 6W 3 30 2 7W 6tV r/Mfr70//3WLL£, Fig. 9.âDiagram showing the alkaloidal content of the leaves of second-generation belladonna plants from cross-pollinated parents at two stages of growth at Arlington, Va., and Madison, Wis., and at one stage of growth at Timmonsville, S. O, during the first season, 1914. in so far as the stage of growth is concerned. It is evident from the results obtained that at all three stations these second-generation plants show the characteristics of the parents as regards their alkaloidal content. Naturally, there are individual variations, and the plants at one station may be uniformly lower in alkaloidal con- tent than at another station, but the point to be observed here is that at all the stations it is true in a general way that the plants selected originally from parents of high alkaloid-yielding tendencies show generally a greater percentage of alkaloids than those from parents of the opposite tendency. Table VI and figures 9 and 10 show this very plainly. It must be pointed out, how- ever, that only a few plants were included under lot 7w5, and this must be borne in mind when studying the averages. In order to gather some information regarding the influence of climatic conditions upon alkaloid production, a tabulation was made of the principal weather characteris- tics at or near the three stations for the four months, May to August, in- clusive, of the year 1914. This compilation is shown in Table 7W 6W Fig. 10.âDiagram show- ing the average alka- loidal content of all the individual second-gen- eration belladonna plants from each par- ent at Arlington, Va., Madison, Wis., and Timm
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