7i8o 



SUGAR CROPS 



considerably the character of the juice. Extraordinary variations have ben 

 met with in a seedling in analysing the different canes in the clump. This 

 has led to increased care in sampling and the discovery that certain varieties 

 produce, in a given clump, two kinds of cane, differing both in certain 

 morphological characters and in time of origin. In anah'sing the juice of 

 canes this classification into earty and late varieties cannot be ignored. 



Taking the whole series of selected seedlings during the last 3 seasons, it 

 is seen that the sucrose content in the seedlings has risen continuously as 

 follows : 



Table IV. — Sucrose in the Juice of Selected Seedling. 



IV. Correlation between IMorphologicai, Characters of Seed- 

 lings AND Richness or thir Juice. — The advantages that would 

 accrue, as regards economy of time and trouble, trom the discovery of cor- 

 relations between morphological characters of the young seedlings with 

 richness in juice are obvious ; but there are special difficulties in the way and 

 the principle has been adopted of trying first to find such correlations in 

 mature canes at crop time and later to attempt to correlate infant and 

 mature characters. The first step alone has been tried at present and the 

 following correlations have been studied between mature characters and 

 sucrose in the juice, the results being summarised in table V appended: — 

 correlation between the amount of sucrose in the juice and various 

 leaf and cane measurements (width, length and module, or length 

 divided by width) and colour of cane, and correlations between leaf 

 width and thickness of cane, tillering power and total weight of seedling. 



