The T<>'-ii''">'i^ <>^ Heredity 



mm 



ROUND TIP TOBACCO SHOWING UNIFORMITY OF GROWTH 



This new tyi)e of toljacco has prrxhict'd 2,^00 [kjuikIs per am- uikKt ideal ronditions as com- 

 pared to aljout 1,500 pounds per acre from types that are commonly grown. It has a greater num- 

 ber of leaves, ovate in shape, thus affording a greater yield of cigar wrappers. (Fig. 3.) 



The two varieties were crossed and a 

 small first hybrid generation grown. 

 The j)lants were uniformly intermediate 

 in type, though perhaps approaching 

 the Sumatra rather than the Hroadleaf. 

 They grew very qui<kh-, and appar- 

 ently did not possess a very desirable 

 root system since a slight windstorm 

 would send them to the ground. The 

 leaves were very coarse- veined and 

 worthless commercially. The second 

 hybrid generation was extremely varia- 

 ble, transcending the grand-jiarenta! 

 limits in such characters as leaf num- 

 bers. Among the plants of the second 

 hybrid were about twenty with the 

 characteristics desired so far as one 



could tell from field observation. Selfed 

 seed from these indi\itluals was ob- 

 tained, and a number of F3 families 

 tested. Some were variable, some were 

 apparently constant. After careful 

 statistical study in the field, half a 

 dozen selections were carried to the 

 fourth hybrid generation and further 

 eliminations made after the leaves had 

 been sorted and cured. The selection 

 surA"i\ing this luie-grained seive was 

 named the Round Tip. 



QUALITIES OF THE NEW TYPE 



The new tol)acco possesses a leaf 

 nearly as large as that of the Broadleaf 

 when grown on fertile soil. Its leaves 



