NEW foiik 



■OT A NJil,. ••",■: 



UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



BOTANY 



Vol. 5, No. 17, pp. 457-582, 2 figures in text, plates 55-85 April 14, 1922 



INHERITANCE IN NICOTIANA TABACUM 



I 



A REPORT ON THE RESULTS OF CROSSING CERTAIN 



VARIETIES 



BY 



WILLIAM ALBERT SETOHELL, THOMAS HARPER GOODSPEED, 

 AND ROY EL WOOD CLAUSEN 



CONTENTS PAGE 



I. Introductory : 458 



II. Plan of the work ; 460 



III. Angustifolia-7nacrophylla series 462 



1. Parents oi the angustifolia-macrophylla series 463 



2. Fi of the angustifolia-macrophylla series ;., 467 



3. F2 of the angustifolia-macrophylla series 469 



4. F3 and subsequent generations of the angustifolia-macrophylla series 472 



a. Stenophylla derivatives 475 



h. Latifolia derivatives 476 



c. Lanceolata derivatives 478 



d. Loriifolia derivatives 478 



e. AuRicuLATA derivatives 479 



/. Sessilifolia derivatives 480 



5. Summary of flower color observations in F2 and subsequent generations 482 



6. Later sowings of F2 and F3 of the angustifolia-macrophylla series 483 



7. Crosses of derivatives with the parents 487 



8. Discussion of results of the angustifolia-macrophylla series 490 



IV. Cahjcina-virginica series ., 494 



1. Parents of the calycina-virginica series 494 



2. Fi of the calycina-virginica series 496 



3. F2 of the calycina-virginica series '. 497 



4. F3 and subsequent generations of the caZ?yana-?;i>^imca series 499 



5. Discussion of results of the calycina-virginica series 504 



V. Alha-macrophylla series .- 504 



L Parents of the alha-macrophylla series ; 504 



2. F) of the alha-macrophylla series 505 



3. ¥2 oi the alha-macrophjiUa series 505 



4. F3 and subsequent generations of the alha-macrophylla series 507 



5. Discussion of results of the alha-macrophylla series. 510 



