Results
Distribution of seed mass phenotypes
Seed masses of the two parents of the RI lines were very
different. 'Berken' had large seeds (approximately 6.10 g
per 100 seeds) and 'ACC41' had very small seeds (approximately
1.00 g per 100 seeds). The average seed masses of
the RI lines among the four seed sources were similar
(ranging from 2.37 to 2.71 g per 100 seeds) and they were
all lower than the average seed mass of the two parents
(3.55 g per 100 seeds). The distributions for seed mass of
the RI lines were statistically normal. None of the RI lines
produced seeds as large as those of the large-seeded parent
('Berken'). The largest seed from the RI lines was produced
in Australia (5.04 g per 100 seeds, Table 1). As expected,
strong correlations of seed mass were detected among the
four different seed sources used, ranging from r = 0.80 to
r = 0.95 (Table 3).