Genome Size in Diploids, Allopolyploids, and Autopolyploids of Mediterranean Triticeae

Table 1

Analysis of variance and variance components estimates of DNA content in different lines of 22 diploid Triticeae species (a), in different lines of 24 allopolyploid species of Aegilops and Triticum (b), and in different lines of diploid and autotetraploid cytotypes of Elymus and Hordeum (c) analyzed in a random effect model.

(a) Diploid species.

Source of variation	df	Sum of squares	Mean square	F	Variance components	Percent of total variance
Species	22	288.056	13.0935	1049.204^∗	0.878816	98.814
Lines (Species)	249	3.123	0.01254	1.8292^∗	0.003693	0.415
Plants (Lines, Species)	166	1.138	0.00686	—	0.006857	0.771
Total					0.889366	100.000

(b) Allotetraploid and allohexaploid species.

Group	Source of variation	df	Sum of squares	Mean square	F	Variance components	Percent of total variance
Tetraploids	Species	18	150.087	8.3382	80.444^∗∗	1.05737	90.97
	Lines (Species)	64	6.650	0.1039	0.979 n.s.	−0.00107	−0.09
	Plants (Lines, Species)	95	10.080	0.1061	—	0.10610	9.13
	Total					1.16246	100.00
Hexaploids	Species	6	4.232	0.7053	5.168^∗	0.14267	61.73
	Lines (Species)	14	1.720	0.1228	3.664^∗	0.05492	23.76
	Plants (Lines, Species)	16	0.536	0.0335	—	0.03352	14.51
	Total					0.23111	100.00

(c) Diploid and autotetraploid cytotypes.

Group	Source of variation	df	Sum of squares	Mean square	F	Variance components	Percent of total variance
Diploids	Cytotypes	3	5.725	1.9082	94.649^∗	0.54589	97.03
	Lines (Cytotypes)	11	0.261	0.0238	7.895^∗	0.01373	2.44
	Plants (Lines, Cytotypes)	24	0.078	0.0032	1.641	0.00113	0.20
	Residual					0.01850	0.33
	Total					0.56261	100.00
Tetraploids	Cytotypes	4	35.870	8.9676	101.618^∗	0.06829	56.63
	Lines (Cytotypes)	30	2.893	0.0964	8.671^∗	0.03500	27.49
	Plants (Lines, Cytotypes)	37	0.394	0.0106	0.576	0.00009	0.07
	Residual					0.02396	18.82
	Total					0.12735	100.00

^∗𝑃≤.01; ^∗∗𝑃≤.001.