208 



POLLINATION AND CROSS-FERTILIZATION IN THE JUAR PLANT 



Cross V. 

 From 1910-1913 Thaithur, which had been a pure white for the two 

 previous years, produced a small Dumber of red grained plants in the single 

 plant cultures. This was unexpected and the explanation lay in one of two 

 directions: — Either these leds were rogues, i.e., plants from stray seeds, or 

 they were crosses. The small number of red plants might support either 

 supposition. On xesowing they proved to be crosses. 



Cross VI. 



Nilwa in 1910 produced in the line culture seven red giained plants, the 

 rest of the line being white giained. On resowing, these red giained plants 

 proved to be crosses splitting into red and white. Nilwa appears to be a variet y 

 very liable to cross-pollination, the percentage of crosses being as high as 6%. 



The following table sets out the combined figures obtained from the last 

 two natural crosses Avhich occurred in varieties having a loose type of panicle 

 with short glumes : — 



Table V. 



