98 Self-Incoiiipatihility in Hermaphrodite Plants 



One plant bloomed for 51 days; 18 flowers selfed produced 18 pods, 

 none over 5cm. long; 6 pods contained seeds as follows: 1, 2, 3, 2, 1, 

 and 3, all in flowers that opened during first 28 days of bloom ; no seeds 

 were produced in 7 flowers self-pollinated during the last 23 days of 

 bloom. 



Another plant bloomed for 58 days, 8 flowers were selfed, all produced 

 pods with seeds in 5 pods as follows : 1, 1, 3, 7, and 2, and in this case 

 the first flower to open produced 1 seed and the very last 2 seeds. 



One plant produced 2 seeds in each of the first 2 flowers to open 

 but none in the 7 flowers tested later. 



One plant gave 9 and 6 seeds in 2 pods from flowers that opened 

 during the mid-period of bloom and none in flowers pollinated earlier 

 or later. 



The other seven of the partially self-fertile plants produced capsules 

 and seeds as follows : 13 capsules, 1 seed; 11 capsules, two with 1 seed 

 each; 6 capsules, one with 2 seeds; 13 capsules, 1 seed; 8 capsules, 

 1 seed ; 8 capsules, 1 and 2 seeds ; 5 capsules, 1 seed. In all of these 

 the capsules bearing seed were fi-om flowers that opened before the 

 mid-date of bloom. 



' The single plant that was classed as highly self-fertile bloomed for 

 18 days and had only 6 flowers ; three of these self-pollinated, gave fine 

 pods bearing 26, (seed lost), and 15 seeds each. The first flower to open 

 gave 26 seeds. 



One plant of this series was grown in isolation in the field. It grew 

 vigorously, made a spread of nearly 8 feet in diameter, began bloom on 

 June 21st, and was still blooming on Nov. 6th when freezing temperatures 

 occurred. During the latter part of July and the first week of August 

 as many as 100 flowers opened each day. Insect visitors were abundant 

 during most of the flowering period and carried much pollen from flower 

 to flower, besides the autonomous fall of pollen to stigmas. The plant 

 was examined at intervals of about every third day and during the 

 earlier and later portions of the blooming period all flowers opening on 

 those dates were tagged. During the height of bloom many of the 

 flowers (up to 35 per day) were tagged. A total of 928 flowers were 

 tagged and examined later, and at least as many more opened. Not 

 a single ovary enlarged to a size of more than 1*5 cm. in length. The 

 plant was completely self-sterile producing neither seeds nor empty 

 pods. On four widely separated dates the plant was crossed with a 

 plant of Series 1, and every pistil produced a fine large pod with many 

 seeds. 



