The establishment of varieties in Coleus by the selection of somatic variations

Sterilities of wild and cultivated potatoes with reference to breeding from seed /

“…It would seem that the comparatively short blooming period of a potato plant limits and largely precludes the possibility of such noteworthy changes in sex as are seen in the successive flowers on a plant of Cleome spinosa (22). The influence of various infectious diseases on the quality of pollen has not been carefully studied by the writers.…”

“…July 23,1919July 22,1920 Aug 5,. 1917 July18,1919 July20,1920 July22,1920 July 21,1921 July 25,1921 Do July18,1919 Aug 5,. 1917 Do Aug 6,…”

“…July 24,1922 July 24, 1920 July 28,1920 June 5, 1922 June 7,1922 July 13, 1922 July 19,1922 Aug. 2,1920 July 22,1919 July 17,1920 July 22.1919 July 22,1920 Julv 20,1920 "Do Julv 21,1922 Ju.y 20,1922 Do July 13,1922 Do July 12,1922 July 19,1922 July 18,1S22 July 20,192220, Julv 21,1922 July 29,1920 July 26,1920 July 24,1920…”

On the Special Substance that inhibits Self-fertilization

“…These results show that the inhibiting substance is produced shortly before or after the opening of the flower , lacking in the young pistils of the flower buds. It was observed and studied by several investigators , such as DARWIN (1876), EAST (1917), andSTOUT (1920), that some self-incompatible plants often showed some self fertility towards the close of their flowering season. Some experiments were made on the nature of the old individual of Petunia to make the cause of this phenomenon clear .…”