2^4 



NATURAL OHOSS-FERTILIZATION IN INDIA. 



further case was proved in 1908 in one of the plots of dwarf wheats 

 at that station. It was further stated that in a large number of 

 the plots at Lyallpur in 1908 (each grown from the produce of 

 single ears sown in 1906), many stray plants were found, often 

 more than one in a plot. These we considered were in all proba- 

 bility natural crosses in the Fj generation. They have since been 

 grown singly and their offspring examined.' 



The results, arranged under the botanical variety in which 

 the stray plants were found during the harvest of 1908, are given 

 in the following tables : — 



» Triticum dicoccum, Schrk. var. farrum, Bayle. 



In one of the plots of white chaff emmer belonging to the 

 above variety three stray ears were found with red chaff. These 

 in 1909 gave rise to the following : — 



As no red chaff emmer has yet been found in India, it is evid- 

 ent that the ordinary white chaff emmer has been crossed with a 

 red chaff wheat, and probably one with a red grain. These are 

 the only cases of natural crossing in emmer we have observed at 

 Lyallpur. No cases have so far been observed at Pusa, where this 

 variety has been grown for five years. 



I These cultures were made in the Botanical area at the Cawnpore Experiment Station, as 

 the conditions there are more favourable than at Piisa for the growth of Punjab wheats. We 

 aie indebted to Mr. PI. M. Leake for facilities extended to us for this work and for the care of 

 the cultures in the rabi season of 1908-09. 



