i04 BULLETIN 697^ U. S. DEPARTMENT OF AGEICULTUEE. 



Figures 7 and 8 show the average number of seeds per fruit pro- 

 duced by trees of the different strains in the performance-record plats. 



/ fiOUGtt STM/N 

 /9 MAPS^ STPA/N 



5 /i/G/ifST, PRODUC/NG , 



(ALL MARSH STRA/NJ 



/ SMOOT/i Sf^fDY Sr/?A//V 48. 7 



Ay£RACr NUMBER Of SffPS P£R rfiU/T 

 2.2m 



2.6 m 

 2.8 ja 



5 LOWEST PffODUC/NG 5/.5\ 



4 ROUGH SEEDY STRA/N 522 1 



P209iaHP I 



Fig. 7.— Average number of seeds per fruit found on trees of various strains of Marsh grapefruit in the j 

 investigational performance-record plat A in a grove planted in 1898, being a summary of the data j 

 secured during the 6-year period, 1910 to 1915, inclusive. i 



These data indicate that the most productive and most desiraole j 

 strains and groups of trees bear fruit with the least number of seed, j 

 The high seed con- 

 tent of the fruits of 

 the seedy strains is 

 strikingly shown in 

 figure 7. 



Figures 9 and 10 

 show the percentages 

 of fruits of a variable 

 character found in 

 the total crops of the 

 trees of the various 

 strains in the per- 

 formance-record plats, 

 minor importance. 



AvrRAGr NUAfBCR Of scrcs PfR rRu/r 



S fi/G/irjr FRODUC/NG , 3.2 



(ALL M/\f)Sn STR/^/Nj 



40 MARStf STRA/N 

 3 UNPf^ODUCT/V£- STRA/N 

 S LOWfTSr RROPi/C/A/G 

 9 ALT£-RNAT£ BfAR/NG STRA/N 3.8 



P20920HP 



Fig. 8.— Average number of seeds per fruit found on trees of various 

 strains of Marsh grapefruit in the investigational performance 

 record plat B in a grove planted in the fall of 1903, being a 

 summary of the data secured during the 4-year period, 1912 to 1915, 

 inclusive. 



Practically all of these fruits were forms of 



Figures 1 1 and 

 12 show the aver- 

 age production by 

 weight of the differ- 

 ent commercial 

 sizes and grades 

 from the five high- 

 est producing trees 

 in each of the per- 

 formance-record 

 plats in comparison 

 with the corre- 

 sponding yields of the five lowest producing trees of these plats, 

 respectively. These summaries are for the 6-year period, 1910 to 

 1915; inclusive, except that the data relating to culls cover only the 



yAR/ABL^ FRU/rS R£R CfNT BY A/U/^B£-R 



/ S/^OOrtt SffOY STRA/A/ 0.20 



/ RO(/G/y STRA/N 

 /9 MARS/i STRA/N 

 S tf/G/i£:ST.PRODUC/NG , 



(all MA>tSH sr/f/MN/ 



S LOWEST PROPUC/A/G 

 '4 ROUGH S£EPY STRA/N 



P20926HP 



Fig. 9.— Percentage of variable fruits found on trees of various 

 strains of the Marsh grapefruit in the investigational performance- 

 record plat A in a grove planted in 1898, being a summary of 

 the data secured during the 4-year period, 1912 to 1915, inclusive. 



