Table 1. Chromosome 3H^ch pairing at metaphase I in the first ear sampled from four independent plants per addition line. Applying a χ² test to test whether chromosome pairing was similar in the two lines suggested that the hypothesis should be rejected (p <0.001). del3H^chL: the line carrying the version of chromosome 3H^ch in which a deletion on the long arm has removed neither the long arm telomere nor the subtelomeric region, del3H^chS: the line carrying the version of chromosome 3H^ch in which a deletion on the short arm has removed the subtelomeric region. n: number of cells analysed.

Line	Number of spikes	Total n	Ring bivalents n (%)	Open bivalents n (%)	Univalents n (%)	P
del3HchL	4	275	273 (99.27)	2 (0.73)	0	2.2 × 10-16
del3HchS	4	511	0	503 (98.43)	8 (1.57)