GENETICAL AND CYTOLOGICAL STUDIES 



ON THE RELATIONS BETWEEN ASIATIC 



AND EUROPEAN VARIETIES OF 



PISUM SA TIVUM 



I. PARTIAL STERILITY IN HYBRIDS OF A THIBETAN 

 AND A EUROPEAN VARIETY 



m 



CAROLINE PELLEW 



II. CHROMOSOME ASSOCIATION IN PISUM 



BY 

 EVA RICHARDSON SANSOME 



Feom journal of genetics, Vol. xxv. No. 1, 



pp. 25-54, NOTEMBBB, 1931 



V 

 'it 





CAMBBIDGB 

 AT THE UNIVERSITY PBBSS 



PBINISD IN OBEil BBIIAIN 



