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Table 5 Seed-set from backcrossing verified tetraploid progeny plants of 440–1 to white clover (WC)

From: Experimental evidence for the ancestry of allotetraploid Trifolium repens and creation of synthetic forms with value for plant breeding

Female WC male No. heads No. seeds Seeds/head
440–1 OP-3 (PxB)-17 4 64 16
440–1 OP-8 C21557-1 1 22 22
440–1 OP-8 Will-2 3 53 18
440–1 OP-9 (PxB)-5 1 damaged 2 2
440–1 OP-21 (PxB)-5 3 39 13
440–1 OP-57 (PxB)-5 3 32 11
440–1 OP-70 C21557-1 2 5 3
440–1 OP-72 C21557-1 3 68 23
440–1 OP-76 C21557-1 2 7 4
440–1 OP-88 (PxB)-5 3 122 41
440–1 OP-90 C21557-1 2 2 1
440–1 OP-110 C21557-1 3 0 0
WC control (PxB)-5 1 105 105
440–1 OP-3 self-5 (PxB)-5 3 10+3 small 3–4
440–1 OP-3 self-12 (PxB)-5 3 14+7 small 4–7