Duplicate genes for capsule fonii iu Bursa bursa-pasloris. l-Ji 



Plants. 



Avena sativa (oats) : — 



Black color of g:lumes (Nilssoii-Ehle 1908, 1909) 



Presence of a ligula i ^,., ,,, , 



T. . , , . f, (Nilsson-Khle 1909) 



Paniculate inflorescence I ^ ' 



Hairiness of glumes (Nilsson-Ehle 1908, von Tschermak 1911) 



Length of glumes 



Number of flowers per spikelet 



Weight of grains (Nilsson-Ehle 1908) 



Height of stem 



Width of leaves 



Vegetative period, 



i.e., time of ripening (Nilsson-Ehle 1908, 1911b) 

 Beta vulgaris (beet) : — 



Length of root 



Form of root 



Yellow root- color 



Red root- color 

 Brassica napus (Swedish turnip): — 



Bed root-color (Kajanus 1912b)') 

 Brassica rapa (tuinip): — 



Length of root (Kajanus i912b)'j 

 Bursa hursa-pastoris (shepherds purse): — 



Triangular form of capsule (ShuU 1911a, 1914) 



Cucurbita Pepo (gourd): — 



Size of fruit \ ,^^ ,„,, 



n, r r -^ (Emersoii 1910) 



Shape of fruit ) 



Linum angustifolium 



Linum crepitans 



Linum usitatissimum (flax): — 



Length of seeds (Tammes 1911, 1913, Johanusen 1913) 



Length of petals 



Width of petals ,_, . ,„,, ,^,„^ 



„ , , / (Tammes 1911, 191.3) 



Color of flowers 



Deliiscence of capsules ' 



(Kajanus 1912a) •) 



') Kajaniis presented mucli data from the Fj families in support of tlie view 

 that each of these characters is in certain cases independently produced by two or more 

 Mendelian genes. In a later study, however, (Ka.janus 1913) he entirely abandons 

 tliis interpretation. 



Induktive Abstanimungs- und Vererbungslehre. XII. 9 



