Selection between and within half-sibling progenies of Ilex paraguariensis for adventitious rooting of mini-cuttings

被引：1

作者：

Gazzana, Denise ^{[1
]}

Pimentel, Nathalia ^{[1
]}

Lohmann, Gabriele Thais ^{[1
]}

Spanevello, Janaina de Fatima ^{[1
]}

Bisognin, Dilson Antonio ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Ave Roraima, BR-97105900 Santa Maria, RS, Brazil

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2020年 / 20卷 / 04期

关键词：

Breeding; vegetative propagation; adventitious rooting; cloning; A; ST-HIL; GENETIC-PARAMETERS; MATO-GROSSO; ERVA-MATE; PRODUCTIVITY; IMPROVEMENT;

D O I：

10.1590/1984-70332020v20n4a56

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

This study aimed to evaluate half-sibling progenies for developing breeding strategies and to select mate clones with adventitious root competence, required for vegetative propagation by mini-cuttings. For rooting, single-bud mini-cuttings of 2 cm length were treated with indolebutyric acid at 2000 mg L-1. At 60 days of cultivation, the mini-cuttings were evaluated for percentages of survival and rooting, number and mean length of the three largest roots, and number of rooted mini-cuttings per mini-stump. These data were analyzed considering the mixed model described for a completely randomized design, an environment, half-sibling progenies, and a single plant per plot, by using the SELEGEN-REML/BLUP software. The 50 genotypes with the highest number of rooted mini-cuttings were selected. The genetic gain was 48.41% for the number of rooted mini-cuttings per mini-stump. Selection for adventitious rooting based on the number of rooted mini-cuttings can be used in mate breeding programs for vegetative propagation by mini-cuttings.

引用

页码：1 / 8

页数：8

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