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Medientyp:
E-Artikel
Titel:
Features of heterosis manifestation in interlinear hybrids of sweet pepper in unheated film greenhouses
Beteiligte:
Koroleva, Svetlana;
Polyakova, Nelly;
Pistun, Olga
Erschienen:
EDP Sciences, 2021
Erschienen in:E3S Web of Conferences
Sprache:
Nicht zu entscheiden
DOI:
10.1051/e3sconf/202128502039
ISSN:
2267-1242
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>The dynamics of changes in an important economic trait of sweet pepper “average fruit weight” and the manifestation of heterosis have been studied on the example of 10 hybrids and their parental lines with multiple harvests in an unheated film greenhouse. It was found that the average weight, regardless of its value, was maximum and relatively stable during the first 5 harvests, which corresponds to the return of an early yield in the first month of fruiting. At the last collection, there was a decrease in the average weight of the fruit by 1.3-2.5 times. It has been established that a decrease in fruit weight with late harvests in hybrids occurs at a later date and is less pronounced than in parental lines, which indicates their higher adaptive ability. With an early harvest in 3 combinations, the level of true heterosis was 5.4-19.7%, a hypothetical heterosis at the level of 5.4-24.4% was found in 7 hybrids. At an early harvest and a late harvest in 50% of sweet pepper hybrids, the value of heterosis varied, but had the same character; in 50% of hybrids, a change in the sign of heterosis to the opposite was noted.2 hybrid combinations with a more stable average fruit weight were identified with multiple harvests - (Bs1xF46Kt22706) and (San1xF46Kt2181) with varying traits within 77-99 g and 81-123 g. the effect in 80% of large-fruited (17.6-27.3%) and medium-fruited hybrids (8.5-49.3%) was noted after the early harvest on July 21.The maximum effect of heterosis does not correspond to the maximum value of fruit weight in the experiment and is associated with a more pronounced reaction of the parental lines compared to hybrids to extreme temperatures during the period of fruit formation.</jats:p>