Estimates of genetic parameters and expected genetic gains with selection in robust coffee

IF 1.3 4区农林科学 Q3 AGRONOMY

Crop Breeding and Applied Biotechnology Pub Date : 2004-03-30 DOI:10.12702/1984-7033.V04N01A14

J. C. Mistro, L. C. Fazuoli, P. Gonçalves, O. G. Filho

引用次数: 26

Abstract

The present paper aimed to study the genetic variation of 15 half-sib progenies of robust coffea ( Coffea canephora Pierre). The trial was conducted at the Instituto Agronomico de Campinas (IAC/APTA) in a randomized complete block design with seven replications and one tree-plot. Annual and joint analyses of variance were obtained to estimate the genetic paramet ers for yield, in order to quantify the genetic gain from selection in eight production years. The genotypic variation coefficient s indicated expressive genetic variability for improvement of the yield. On account of the high variation in annual production, it is recommended that selection should be based on the general mean of the years. In low yield years, larger heritability values, coefficients of genetic variation, index of genotypic determination, and genetic gains were estimated.

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鲁棒咖啡中遗传参数的估计和预期遗传增益的选择

本文旨在研究15个鲁棒咖啡(coffea canephora Pierre)半兄弟后代的遗传变异。该试验在坎皮纳斯农学研究所(IAC/APTA)进行，采用随机完全区组设计，有7个重复和1个树状图。通过年度方差分析和联合方差分析估计产量遗传参数，量化8个生产年的遗传选择收益。基因型变异系数s显示了产量改良的表达性遗传变异。由于年产量的变化很大，建议以年份的一般平均值为基础进行选择。在低产年份，估计遗传力值、遗传变异系数、基因型决定指数和遗传增益较大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Breeding and Applied Biotechnology AGRONOMY-BIOTECHNOLOGY & APPLIED MICROBIOLOGY

CiteScore

2.70

自引率

13.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The CBAB – CROP BREEDING AND APPLIED BIOTECHNOLOGY (ISSN 1984-7033) – is the official quarterly journal of the Brazilian Society of Plant Breeding, abbreviated CROP BREED APPL BIOTECHNOL. It publishes original scientific articles, which contribute to the scientific and technological development of plant breeding and agriculture. Articles should be to do with basic and applied research on improvement of perennial and annual plants, within the fields of genetics, conservation of germplasm, biotechnology, genomics, cytogenetics, experimental statistics, seeds, food quality, biotic and abiotic stress, and correlated areas. The article must be unpublished. Simultaneous submitting to another periodical is ruled out. Authors are held solely responsible for the opinions and ideas expressed, which do not necessarily reflect the view of the Editorial board. However, the Editorial board reserves the right to suggest or ask for any modifications required. The journal adopts the Ithenticate software for identification of plagiarism. Complete or partial reproduction of articles is permitted, provided the source is cited. All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY. All articles are published free of charge. This is an open access journal.