102 Self-Incompatihility in Hermaphrodite Plants 



produced pods, the self-compatibility of this plant appeared to increase 

 toward the end of the period of bloom. The plant was, however, some- 

 what self-compatible from the first. 



Another plant bloomed from Aug. 29 until Oct. 24. Two small pods 

 were obtained from two flowers selfed on the tenth day of bloom while 

 16 flowers selfed on five earlier dates entirely failed; 51 flowers selfed 

 on seventeen later dates, and including several of the last to bloom, all 

 failed. 



For another plant, of 38 flowers selfed on eleven different dates, there 

 were 10 pods of scattering dates from the first day of bloom. 



A plant that bloomed for 80 days was tested in 45 flowers on eighteen 

 dates. Only two small pods developed ; one on the eighth, and one on 

 the twenty-sixth day of bloom. 



Another plant gave 10 pods at scattering dates from the fifth day of 

 bloom to the last date, 55 days later. 



A plant which bloomed for 63 days was tested in 51 flowers ; two 

 small pods were produced, one on second day of bloom and one on the 

 thirtieth. Twenty-two flowers selfed on later dates failed. 



The complete record for one plant may be here given with dates of 

 pollinations, failures indicated by 0, and capsules by P. Aug, 6th, first 

 flower, 0; 9th, 0, 0; 12th, 0; l^th, 0, 0; 16th, 0, 0, 0; 19th, 0, 0; 21st, 0, 0, P 

 24.th, 0, ; Sept. 4th, 0, ; 6th, 0, 0, 0, 0, 0, 0, 0, 0, P ; 9th, 0, 0, 0, 0, P 

 11th, 0, 0, P, P, P; 14th, (i, 0, 0, 0, 0; 16th, 0, P, P ; 21st, 0, 0; 24.th, 0, 0, 0, 

 28th, 0, 0, ; 30th, and the last flower. This plant was feebly self- 

 fertile but its self-compatibility was mid-seasonal rather than end- 

 seasonal. 



Six sister plants of this series were grown to maturity in pots in a 

 greenhouse, a treatment which greatly reduces the number of branches 

 and flowers. These plants bloomed for periods of 9 to 51 days. Four 

 were completely self-incompatible. Two were feebly self-compatible. 

 For one of these the record is as follows : Aug. 10th, began bloom, 0, ; 

 14th, 0, 0, ; 16th, 0, ; 19th, 0, ; 22nd, 0, 0, ; Sept. 3rd, 0, 0, 0, P ; 

 9th, 0, 0, P ; 11th, 0, 0, P ; 16th, 0, P. This plant exhibited a good case 

 of end-season self-fertility. Another plant bloomed for only eighteen 

 days and produced but 10 flowers, 6 of which were selfed with the 

 following results : Sept. 3rd, ; 9th, ; 11th, P ; 16th, P, P ; 20th, 0. 



All the self-sterile plants produced fine pods for the greater number 

 of flowers which bloomed in the open subject to cross-pollinations by 

 insects and humming birds. Numerous tests for parthenocarpy and 

 apogamy were made in self-fertile plants but in no case did pods form. 



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