530 WHITE— STUDIES OF INHERITANCE IN PISUM. 



Purple Sugar Pea, Graue Riesen — Bateson & Kilby (i). 



Graue Riesen, Svalof P. arv. No. IV., and No. X. — Tschermak (86). 



Irish Mummy, Gray Sugar and others (unpubHshed data) — White. 



Wrinkled, Angular. 

 British Queen, Laxton's Alpha, Telephone — Darbishire (19). 

 WilHam I. ?, Telephone, Laxton's Alpha, Serpette nain blanc. Dark 

 Jubilee, Early Giant, British Queen, Windsor Castle — Gregory 



(37)- 



Laxton's Alpha, Serpette nain blanc, Telephone, Veitch's Perfec- 

 tion — Bateson & Kilby (i). 



Telephone, Satisfaction, Nonsuch, British Queen — Lock (54). 



William Hurst, Laxton's Alpha, Goldkonig — Kappert (48). 



British Queen — Hurst (42). 



Prince of Wales, Telephone and others — Tschermak. 



Goldkonig, Quite Content, Nott's Excelsior, Laxtonian, and many 

 others — (unpublished data) White. 



Results from Crossing. 



Round smooth, white flowers X round smooth, white flowers 

 always gives round smooth seeds and white flowers in F^ and suc- 

 ceeding generations. 



Round smooth, white flotvers X round smooth, colored flowers 

 in F^ (of cotyledons) gives round smooth seeds, but in F^ of seed 

 coats (Fo of cotyledons) gives all indent seeds. In Fo of seed coats 

 (F.. of cotyledons) the number of F^ plants bearing all indent seeds 

 to those with only smooth seeds approximates 9 : 7. The reciprocal 

 of this cross in Fj (of cotyledons) as well as in F^ of seed coats 

 (Fo of cotyledons) gives all indent seeds, while in Fo the results are 

 the same as when the white-flowered smooth-seeded variety is used 

 as the maternal parent. 



According to Tschermak (80, 81, 86), Lock (54), Bateson (3) 

 and others w'ho have experimented with indent varieties, the indent 

 seeds are always borne on plants with colored flowers and there has 

 never been an exception to this association recorded. According 

 to the same observers, white-flowered plants in such crosses always 

 have smooth and never indent seeds. Plants with colored flowers, 



