Selection of self-compatible genotypes in multigerm diploid populations of sugar beet
Barbara Skibowska
b.skibowska@ihar.edu.plZakład Genetyki i Hodowli Roślin Korzeniowych, Instytut Hodowli i Aklimatyzacji Roślin, Oddział w Bydgoszczy (Poland)
Abstract
Monogerm diploid sugar beet varieties are hybrids between CMS lines and multigerm diploid pollinators. In creating sugar beet hybrids inbreeding is necessary to obtain suitable parental lines. These lines should possess valuable agronomic traits associated with a high combining ability. The investigations described in this paper are of great importance because of the recent tendency to produce diploid varieties that are comparable to triploid ones. The aim of the work was to select highly selfcompatible plants originated from a population as well as from pair crosses of diploid plants. In progenies coming from the population seed setting after self-pollination ranged from 2% to 25% in S1 generation, while in S2 generation it was 26.7%. In progenies originated from pair-crossed plants of the same origin seed setting of S1 generation varied in the range 2.6% to 66.7%, and from 4 to 36% in S2. In S1 a high proportion of seeds (15.9%) with only well developed pericarp was noted. Moreover, progenies of S2 generation showing a green-coloured hypocotyl were selected. These can be used for evaluating a crossing level and identifying selected lines.
Keywords:
diploids, self-compatible lines, sugar beetReferences
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Authors
Barbara Skibowskab.skibowska@ihar.edu.pl
Zakład Genetyki i Hodowli Roślin Korzeniowych, Instytut Hodowli i Aklimatyzacji Roślin, Oddział w Bydgoszczy Poland
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Copyright (c) 2004 Barbara Skibowska
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