Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078938
Research center of Embrapa/Collection: Embrapa Florestas - Artigo em periódico indexado (ALICE)
Date Issued: 2017
Type of Material: Artigo em periódico indexado (ALICE)
Authors: STURION, J. A.
STUEPP, C. A.
WENDLING, I.
Additional Information: José Alfredo Sturion, Pesquisador aposentado da Embrapa Florestas; Carlos André Stuepp, UEPG; IVAR WENDLING, CNPF.
Title: Genetic parameters estimates and visual selection for leaves production in Ilex paraguariensis.
Publisher: Bragantia, Campinas, v. 76, n. 4, p. 492-500, 2017.
Language: en
Keywords: Erva mate
Correlação genética
Progeny trial.
Description: The selection of yerba mate superior genotypes, based on each plant leaf weight, is based on genetic parameters obtained from experimental plantations and it is practically impossible from the fourth year of age. Therefore, we estimate genetic parameters and check the feasibility of selection through notes and weight estimates of each tree at 18.5 years of age. The genetic material consists of a combined trial of provenances and progenies of half-sibs with 140 progenies from 7 provenances, installed in Ivaí, Paraná, Brazil, in a randomized block design with 10 repetitions. The genetic control of leaf production is of low magnitude (h2a = 0.175042 ± 0.0393) revealing high influence of the environment. The additive genetic correlations between the real weight of leaves × notes and real weight of leaves × visually estimated weight were of high magnitude (higher than 88%). Thus, the selection based on the leaves weight can be carried out without major losses in genetic gains by both methodologies when the purpose is the sexual selection, in which case the sort order has no importance. In the case of vegetative propagation, aiming clonal plantations, in which only the plants with the highest genotypic values should be selected, the selection by means of notes and leaves weight estimates proved to be inefficient.
Thesagro: Teste de Progênie
Espécie nativa
Ilex Paraguariensis.
NAL Thesaurus: Yerba mate.
Data Created: 2017-11-06
Appears in Collections:Artigo em periódico indexado (CNPF)

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