282 Neue Literatur. 



Fortpflanzung und Vererbung. 



Allen, C. E., s. unter Moose. 



Aumiot, J., Rajeunissement et perfectionneinent de la pomme de terre. (C. R. 



Ac. Agiic. France, /p/p. 5, 905 — 910.) 

 Babcock, E. B., Crepis — a promising genus for genetic investigations. (Amer. 



Naturalist, igzo. 54, 270 — 276.) 

 Blakeslee, A. F., Belling, J., and Parnham, M. E., Chromosomal duplicatiou 



and Mendelian phenomena in Datura mutants. (Science II. ig2o. 52, 388 — 390.) 

 Blaringhem, L., Les problemes de l'heredite e.\periraentale. Flammarion, Paris. 



/p/p. 317 S. 

 — , Production par traumatisme d'une forme nouvelle de Mais ä'caryopses multiples, 



Zea Mays var. polysperma. (C. R. Acad. Sc. Paris, igzo. 170, 677 — 679.) 

 — , Stabilite et fertilite de l'hybride Geum urbanum L. X G. rivale L. (Ebenda. 



1284— 1286.) 

 — , Her^dite et nature de la pelorie de Digitalis purpmea L. (Ebenda. 171» 



252 — 254-) 

 — , Couleur et sexe des fleurs. (C. R. Soc. Biol. de France, igzo. 83, 892 — 893.1 

 — , Variations de la sexualite chez les composites. (Ebenda. 1060 — 1062.) 

 — , s. unter Angiospermen. 

 Becker, K. E., Untersuchungen über die Ursache der Sterilität bei einigen Prunaceen. 



Diss. Halle. ig2o. 43 S. 

 BezssonofF, TS., Sur l'obtention experimentale de la sexualite chez les Champignons et 



orient(^e sur la structure typique du plasma sexuel. (C. R. Acad. Sei. Paris. 



ig2o. 170, 288—290.) 

 Bonnier, G., Sur les changements, obtenus experimentellement, dans les formes- 



vegetales. (Ebenda. 1356 — 1359-) 

 Caron-Eldingen, v., Physiologische Spaltungen ohne Mendelismus. (Dtsch. lancl- 



wirtsch. Presse, igig. 515 — 51b.) 

 Cockerell, T. D. A., The varieties of Helianthus tuberosus. (Amer. Natural. 



/p/p. 53, 188 — 192.) 

 Daniel, L., Obtention d'une race nouvelle d'Asphodele par l'action du climat marin. 



(C. R. Ac. Sc. Paris. ig20. 170, 1332 — 1333.) 

 Ducloux, E., s. unter Bakterien. 

 East, E. M., Studies on self-sterility. III. The relation between self-fertile and 



self-sterile plants. IV. Selective fertilization. V. A family of seif sterile plants 



wholly ctoss-sterile inter se. (Genetics. igig. 4,314 — 345,346 — 355,356 — 363.) 

 Franz, W., Die Vervollkommnung in der lebenden Natur. Verl. G. Fischer, Jena. 



ig2o. 138 S. 

 Fräser, A., The inheritance of the weak awn in certain Avena crosses and its^ 



relation to other characters of the oat grain. (Cornell Univ. Agr. Exp. Stat. 



Mem. igig. 23, 635 — 676.) 

 Gallastegni, G. A., Some factor relations in maize with reference to linkage, 



(Amer. Naturalist, igig. 53, 239 — 246.) 

 Gates, R. R., A preliminary account of the meiotic phenomena in the pollen mother- 



cells and tapetum of Lettuce (Lactuca sativa). (Proc. Royal Soc. B. ig2o. 91» 



216 — 223.) 

 Goldsehmidt, K., Mechanismus und Physiologie der Geschlechtsbestimmung. Verl. 



Borntraeger, Berlin. ig20. 250 S. 

 Harlan, H. V., and Hayes, H. K., Occurrence of the fixed intermediate, Hordeun 



intermedium haxtoni, in ciosses between H. vulgare pallidum and H. distichuir. 



painiplla. (Journ. Agr. Res. ig2o. 19, 575 — 591.) 

 Hayes, H. K., Parker, J. H., and Kurtzweil, C, Genetics of rust resistance 



in crosses of varieties of Triticum vulgare with varieties of T. durum and T. 



dicoccum. (Ebenda. 97 — 102.) 

 ■^, The inheritance of the length of internode in the rachis of the barley spikc. 



(U. S. Dept. Agr. Bull. 869. ig2o. 1—26.) 



