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We found that the Sw-5 gene confers resistance to one of the Polish isolates of tomato spotted wilt virus (TSWV). A series of tomato breeding accessions was analysed along with standards of resistance and susceptibility to TSWV. The presence of the Sw-5 gene was determined using the available PCR marker. Subsequently plants from these accessions were grown in the presence of the TSWV isolate from...
This review was prepared mainly on the basis of papers published after 1997. It describes the current knowledge on the use of gametic embryogenesis for haploid production in vegetable crops. Data on the results of research on androgenesis and gynogenesis are presented for different species, induction methods and factors affecting the efficiency of the processes.
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