ISHS Acta Horticulturae 539: III International Symposium on Brassicas and XII Crucifer Genetics Workshop
PRELIMINARY RESULTS WITH A NOVEL METHOD OF HYBRID PRODUCTION - PAIR-CROSS HYBRIDS |
| Author: | S. Gowers |
| Keywords: | Brassica oleracea, kale, self-incompatibility |
| Abstract:
Any plant can be considered to be an F1 hybrid between two theoretical inbred lines. Crossing two plants together is, therefore, the equivalent of producing a double-cross hybrid. The sporophytic self-incompatibility system of brassicas can be used to multiply the progeny of a single plant. Crossing two such lines together produces a pair-cross= hybrid. Experimental pair-crosses of kale have been made to examine the degree of heterosis that could be produced with such hybrids; dry matter yields of over 25% higher than the highest parent cultivar have been obtained. Preliminary work with kale and turnips has produced lines with suitable S-alleles that enable the system to work. The advantages and disadvantages of the proposed method are discussed. | |
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