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245	1	0	_aGenetics of Self-compatibility in Dihaploids of Solanum Tuberosum L. I. Breeding Behaviour of Two Self-compatible dihaploids
490	0		_vEuphytica, 25, p.597-607, 1976
520	3		_aTwo highly fertile and self-compatible dihaploids (2n 2x 24)from Solanum tuberosum L. (2n 4x 48)were investigated to elucidate the genetic basis of their self-compatibility. To this end the two dihaploids were selfed and reciprocally intercrossed and the resulting I1 and F1 plants tested for self-compatibility. Reciprocal backcrosses of I1-plants and F1-plants were made. Complete diallels both within self-compatible and within self-incompatible F1-plants were carried out as well as reciprocal matings between self-compatible and self-incompatible Fl-plants. From the wealth of data it could be concluded, that the dihaploids have two intact S-alleles, one being common to both. Six hypotheses were tested for explaining self-compatibility in these particular dihaploids. All but one had to be discarded. It is concluded that the self-compatibility most likely is brought about by the presence of an S-bearing translocation, which is not linked to the S-locus. The ratio se :si in the F1'S point either to certative disadvantage of translocation-bearing pollen or to lethality of translocation homozygotes. The importance of this self-compatibility mechanism for genetic and breeding research in potato is discussed.
650	1	4	_aGENETICS
650	1	4	_aSELF-COMPATIBILITY
650	1	4	_aDIHAPLOIDS
650	1	4	_aSOLANUM TUBEROSUM L
650	1	4	_aBREEDING
650	1	4	_aBEHAVIOUR
650	1	4	_aDIHAPLOIDS
700	1	2	_aOlsder, Janny
700	1	2	_aHermsen, J.G.
856	4	0	_uhttps://drive.google.com/file/d/1Ne3B3Mm4XK_R_k3R2LL8SoTVsxpWuxqf/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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