Table III.

Phenotypic variation observed in mutant seeds

Mutant	No. Seeds Examined	Percentage of Seeds Observed with Specified Mutant Phenotype
		Endosperm titan phenotypea			Arrested embryo phenotype
		Strong	Moderate	Weak	Preglobular	Globular	NDb
ttn1-2	100	78	0	22	84	0	16
ttn1-3	100	67	9	24	96	0	4
ttn4	96	72	12	16	73	0	27
ttn6-1	100	81	14	5	28	70	2
ttn6-4	93	68	22	10	13	87	0
ttn9	100	73	14	13	50	0	50

^a Seeds with giant endosperm nucleoli were classified as strong, those with nucleoli of intermediate sizes were called moderate, and those with smaller nucleoli were considered weak. 

^b ND, Not detected because the embryo was too small.