7() INIIBRITANCE <>K RKI) COLOUIl IN .lUTE. 



hreecliiiL,' exporinients were coiiiinenced ; because, if cross-fertiliza- 

 tion under normal circumstances be at all common, special 

 precautions must be taken, to exclude insects from the parent 

 flowers. The results given below are, we think, sufficient 

 evidence that cross-pollination is rare enouj^h to be ordinarily 

 negligible. 



CUOSS-KEIITILIZATION wrfH PURR TYPES OF ReD AND 



Green Plant.s. 



In 1908 we took two races of C capsidnris, that had been 

 under oliservation long enough for us to be certain tluit iliey 

 reproduced pure, viz. : — 



(I) Desi of Dacca. 



(•2) Bhadya Red of Jalpaiguri. 



The first has no red colour, i.e., it is pure green throughout ; 

 while the second is deep red in stems, petioles and fruits. We 

 cross-fertilized flowers of plants belonging to these races, in both 

 directions, and we selected, from among others obtained in thi.s 

 way, four capsules with good seed, of which, in two cases, a 

 Bhadya plant was the female parent and, in the other two, a 

 plant of Desi. 



It was fountl that, at Pusa, the anthers dehisce about 

 sunrise ; so that it was neces.sary to emasculate the flower of the 

 female parent on the previous evening and to cross it as early as 

 [)o.ssible the next morning. A bag was tied over the ruptured 

 bud, to protect it during the night ; the bag being retained, 

 after pollination, until the capsule began to swell. As a control, a 

 considerable number of other flowers were also emasculated in 

 the evening, but not pollinated on the next morning. No one of 

 these latter set any seed, while the percentage of successes in the 

 case of the cro.ssed flowers was over fift}^ Considerably more 

 than four cros.sed flowers set seed, but the four plants already 

 niontioinMl were the only ones with which the experiment was 

 continued. The four capsules were nuinbured 102, 10.3, 120 and 

 125 respcctivel}'. 



