3.4. Fibre maturity
AUS data had a wider range of yield and maturity ratio compared with the US maturity percentage data (Fig. 4).
The intercept and slopes for AUS data were different,
with 2008 being not significantly different from zero (Table 2).
The regression explains 0.61 variation in the US data,
while only 0.37 in the AUS data.
Outliers in AUS data include the 2004 growing season which had a number of genotypes with high maturity ratio and high yields.
There were also a number of genotypes with low maturity ratio in 2006 and 2007.
The range of maturity percentage in US data were 73–96% but varied with year.
For instance, 2004 had a range of 73–81% while 2002 was 88–96%.
Outliers consisted of five FM cultivars,
Phytogen Seed Company ‘PSC355’ and NM 030212 for high maturity percentage; while the 2004 growing season accounted for eleven low maturity percentage outliers.