A. B. Stout 111 



individual flowers. This generation descended from 6 of the Jj genera- 

 tion and these in turn from 2 plants of the 1916 crop. The complete 

 pedigree is given in Table IV and the records for typical plants of the two 

 families of the I^ generation are given in Tables II and III (pp. 112 — 113). 



The family R 10-8- . 



Series R 10-8-173- . The parent of this series (see Table I) was 

 judged as 14 °/'„ self-compatible. Of the 84 seed planted, 66 germinated 

 and 55 plants were grown to maturity and tested. Thirty-six plants 

 were self-incompatible and 19 were self-compatible, a ratio of 2 to 1. 

 The highest percentage of self-compatibility was 47 °/^. 



Series R 10-8-37- . The immediate parent was judged as 29°/,, 

 self-compatible. Of its seed, 126 were planted ; 86 seed germinated 

 and 56 plants were grown to maturity and tested. Thirty-nine plants 

 were self-compatible and 17 were self-incompatible, a ratio the inverse 

 of that in the series above. The percentages of self-fertility for 4 

 plants were above 50 and there were 11 plants with a percentage higher 

 than 25. 



Series R 10-8-1^0- . The self-compatibility of the parent was 

 judged to be 30 °l^. Mice destroyed many seed after planting but 49 

 plants were grown and tested. Of these 82 were self-compatible. 



The family R 12-11- . 



Three series were grown in the I^ of this family. The immediate 

 parents were judged as 60, 37, and 35 % self-compatible from data pre- 

 sented in Table I. 



Series R 12-11-59- . Of 175 seed planted, 155 germinated, of 

 which 136 plants were grown and tested. Forty-two were self-incom- 

 patible and 94 were self-compatible. Three plants evidently feebly 

 self-compatible were prematurely killed by pine mice ; the individual 

 fertilities of the others ranged to 59 °/„ with distribution as shown in 

 Table IV. Complete data for 3 plants of this series have already been 

 given and discussed on page 106. 



Series R 12-11-^9- . The immediate parent was judged as 35 "/„ 

 self-fertile. Of the 210 seed planted, 136 germinated, and 131 plants 

 were grown to maturity. Tests for self- fertility were made for 115 plants ; 

 77 were self-incompatible and 38 were self-compatible to some degree. 

 There was only one plant with a self- fertility above 25 7o- 



Table III, in which the results for three of the self-fertile plants of 

 this series are given, includes also certain special data. That for No. 12 



