Effect of functional female and male fertilities on crossability in diploid potato breeding |
| |
| Authors: | B Yu Anoshenko V E Podlisskikh |
| |
| Institution: | (1) Institute of Genetics and Cytology, National Academy of Sciences, 27 Akademicheskaya Street, 220072 Minsk, Belarus |
| |
| Abstract: | Summary Functional female fertility (FFF) and functional male fertility (FMF) were studied in diploid potato clones, includingS. tuberosum haploids, F1 hybrids between haploids and otherSolanum species, and in progenies from subsequent hybridisations. The results of 402 crosses between 91 diploid potato clones revealed
that 60% of all genotypes had low levels of FFF as well as low levels of FMF regardless of their origin and degree of hybridity.
Failed crosses (without any fruits at all) and those with a low level of success (with less than 3 seeds per pollinated flower)
constituted 69% of all studied crosses. Most of these had resulted from parents with low levels of FFF and FMF, and these
two characteristics were expressed independently. Functional female fertility affected crossability behaviour no less than
FMF, therefore both FFF and FMF should be controlled in diploid potato clones involved in breeding. Reliable FFF and FMF estimates
can be based only on crossing results. The coefficient of multiple correlation between seeds per pollinated flower in crosses
and FFF and FMF estimates of the parental clones was 0.80 (P<0.01). Hence the compilation and analysis of the results of diploid
potato crosses allow a reliable assessment of FFF and FMF and consequently the prediction of crossability with a degree of
sufficient accuracy. |
| |
| Keywords: | crossability behaviour diploid potato breeding functional female fertility functional male fertility Solanum spp |
| 本文献已被 SpringerLink 等数据库收录！ |
|
