Genetic analysis of F6 and F6:7 soybean generations

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.V04N01A06

R. L. F. Gomes, N. Vello, J. A. A. Filho

引用次数: 4

Abstract

For estimating genetic parameters and selecting superior lines for grain yield, forty-five soybean (Glycine max L.) crosses in F6 and F6:7 generations were evaluated. The soybean lines FT-Cristalina, EMGOPA-301, IAC-4, IAC-5, IAC-6, IAC-8, IAC-9, IAC-11, Santa Rosa, and OCEPAR-9-SS-1 were used in the crosses. The F6 progenies of 44 crosses (except EMGOPA-301 x IAC-5) and the ten parents were evaluated as well as the F6:7 progenies from all 45 crosses and the ten parents in the next crop. The number of days to maturity (NDM), plant height at maturity (PHM), agronomic value (AV) and grain yield (GY) were evaluated for both generations. There was some difficulty to select early top yield lines due to the high positive genotypic correlation between GY and NDM. The heritability estimates were high (> 0.70) and moderate (0.40 – 0.70) for NDM and PHM, respectively. The presence of transgressive segregates indicated the possibility of selecting lines with high grain yield.

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大豆F6和F6:7代的遗传分析

以F6和F6:7代45个大豆(Glycine max L.)杂交组合为材料，进行遗传参数估算和产量选育。大豆品系FT-Cristalina、EMGOPA-301、IAC-4、IAC-5、IAC-6、IAC-8、IAC-9、IAC-11、Santa Rosa和OCEPAR-9-SS-1进行杂交。对44个杂交组合(EMGOPA-301 × IAC-5除外)和10个亲本的F6后代进行了评价，并对所有45个杂交组合和10个亲本的F6:7后代进行了评价。对两代水稻的成熟期(NDM)、成熟期株高(PHM)、农艺价值(AV)和籽粒产量(GY)进行了评价。由于GY与NDM的基因型正相关较高，早顶品系的选择存在一定难度。NDM和PHM的遗传力分别为高(> 0.70)和中等(0.40 ~ 0.70)。越界偏析现象的存在，预示着选育高产品系的可能性。

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.