Intervarietal karyotypic variation in Vicia faba L.

Figures & data

Table 1. Chromosomes characteristics of seven varieties of Vicia faba L.

Variety	Total chromosome length in haploid set (μm)		Longest/shortest chromosome length (μm) (S%)	No. of chromosomeswith arm ratios (long/short)			TF%	TCL in haploid set (μm)	Karyotype category
	Range	Mean		1–2	2–4	4–8
BPL-4070	6.00–17.00	8.59	2.83	1	1	4	26.88	51.55	3B
HBP-A	6.00–15.19	8.30	2.53	1	1	4	25.31	49.81	3B
L-82009	6.50–20.00	10.33	3.07	1	1	4	26.88	62.00	3B
IC-526385	7.40–18.80	10.22	2.54	1	1	4	24.70	61.36	3B
IC-424900	5.66–16.69	8.46	2.94	1	0	5	27.55	50.80	3B
IC-391651	6.40–18.00	10.12	2.81	1	0	4	23.72	60.77	3B
IC-361499	6.15–14.05	8.50	2.28	1	1	4	25.00	51.02	3B

Table 2. Karyotypic details of seven varieties of Vicia faba L.

Variety	Chromosome pair	Relative length (μm)	Total length (μm)	Arm ratio (long/short)	Karyotype formulae
BPL-4070	1	8.71 + 8.29^∗	17.00	1.05	2nm(SAT) + 4nsm + 6nst
	2	6.99 + 1.51	8.50	4.62
	3	6.25 + 1.08	7.33	5.78
	4	6.02 + 0.60	6.62	10.03
	5	4.86 + 1.14	6.00	4.26
	6	4.86 + 1.24	6.10	3.91
HBP-A	1	8.05 + 7.14^∗	15.19	1.12	2nm(SAT) + 2nsm + 8nst
	2	7.0 + 0.82	7.82	8.53
	3	6.55 + 0.95	7.50	6.89
	4	5.56 + 1.24	6.80	4.48
	5	5.06 + 1.44	6.50	3.51
	6	4.98 + 1.02	6.00	4.88
L-82009	1	11.00 + 9.00	20.00	1.22	2nm + 2nsm + 8nst
	2	9.33 + 2.00	11.33	4.66
	3	8.51 + 1.08	9.59	7.87
	4	5.29 + 2.24	7.53	2.36
	5	5.85 + 1.20	7.05	4.87
	6	5.35 + 1.15	6.50	4.65
IC-526385	1	10.00 + 8.80^∗	18.8	1.13	2nm(SAT) + 2nsm + 8nst
	2	7.66 + 2.00	9.66	3.83
	3	6.15 + 1.25	7.40	4.92
	4	8.21 + 1.00	9.21	8.21
	5	7.00 + 1.21	8.21	5.78
	6	7.18 + 0.90	8.08	7.97
IC-424900	1	8.51 + 8.18^∗	16.69	1.04	2nm(SAT) + 0nsm + 10nst
	2	6.55 + 1.43	7.98	4.58
	3	6.00 + 1.01	7.01	5.94
	4	6.02 + 1.26	7.28	4.77
	5	5.06 + 1.12	6.18	4.51
	6	4.66 + 1.00	5.66	4.66
IC-391651	1	10.00 + 8.0^∗	18.00	1.25	2nm(SAT) + 0nsm + 10nst
	2	9.55 + 1.82	11.37	5.24
	3	9.00 + 1.25	10.25	7.20
	4	5.40 + 1.00	6.40	5.40
	5	6.25 + 1.20	7.45	5.20
	6	6.15 + 1.15	7.30	5.34
IC-361499	1	7.05 + 7.01^∗	14.06	1.06	2nm(SAT) + 2snm + 8nst
	2	7.6 + 0.88	8.48	8.63
	3	7.03 + 1.05	8.08	6.69
	4	6.12 + 1.34	7.46	4.56
	5	5.26 + 1.54	6.8	3.41
	6	5.00 + 1.15	6.15	4.34
^∗Short arm inclusive of satellite length.(Abbreviations: nm = nearly median, nsm = nearly submedian, nst = nearly subterminal, SAT = satellite chromosome) (Abraham and Prasad 1983).

Figure 1 Microphotographs of somatic metaphase chromosomes (2n = 12) of the seven varieties of Vicia faba L. (A) BPL-4070; (B) HBP-A; (C) L-82009; (D) IC-526385; (E) IC-424900; (F) IC-391651; (G) IC-361499. Scale bars = 10 μm.

Figure 2 Ideograms of somatic metaphase chromosomes of Vicia faba L. Note the absence of a satellite arm in var. L-82009. Scale bar = 10 μm.

Abraham , Z and Prasad , N . 1983 . A system of chromosome classification and nomenclature . Cytologia , 48 ( 1 ) : 95 – 101 .

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