[Vol. XXXV. No. 413. TjjE BOTANICAL MAGAZINE. 97 



Resume of Article in Japanese. 



KncHi MiYAKE and Yoshitake Imai :— Genetic Experiments with 

 Morning-Glories. III. 



The authors have, in the present paper, dealt with the inheritance 

 of an abnormal flower the so-called " Sbishizaki." In *' Shishizaki " 

 the petals are more or less curled up and feathered, often splitted 

 into numerous slender pieces. The "Sbishizaki" behaves as a simple 

 Mendelian recessive to the normal. The plant with " Sbishizaki " 

 flowers shows certain characteristic modifications in the leaves and 

 cotyledons. The heterozygote carrying the " Sbishizaki " factor can 

 be readily recognized from the dominant homozygote by the leaves. 

 Thus the segregation ratio is 1 : 2 : 1. 



The " Sbishizaki " flowers are sterile and bear no seeds. So this 

 kind of flower can only be obtained by the segregation from the 

 heterozygote. The " Sbishizaki " flower has a high degree of linkage 

 with the heart-shaped so-called round leaf which is also a simple 

 Mendelian recessive to the normal, its crossover being about 1.2^. 



