QTL mapping of spike fertility index in bread wheat

IF 1.5 4区农林科学 Q2 Agricultural and Biological Sciences

Crop Breeding and Applied Biotechnology Pub Date : 2021-01-01 DOI:10.1590/1984-70332021V21N1A3

M. P. Alonso, L. Vanzetti, J. M. Crescente, N. Mirabella, J. Panelo, A. C. Pontaroli

引用次数: 1

Abstract

: Spike fertility index (SF) is a trait easily measured at maturity and strongly associated with the number of grains per unit area. In order to identify genomic regions involved in SF control, a biparental (Baguette 10 × Klein Chajá) population of 80 recombinant inbred lines (RIL) was used. Seven field trails were conducted to determine the SF BLUP value per RIL. RILs were genotyped using a commercial chip (Axiom® 35K SNP Wheat Breeder’s Array, Affimetrix). A linkage map was constructed with 857 SNP markers, and SF QTL mapping was performed. The narrow-sense heritability of SF was 0.89. Three genomic regions (QTL) associated with SF were found on chromosomes 2D, 4A, and 7A. The proportion of genetic variation explained by these three QTL was 32%, with no significant epistatic interaction between QTL.

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面包小麦穗肥力指数的QTL定位

穗肥力指数(SF)是一种在成熟时易于测量的性状，与单位面积粒数密切相关。以80个重组自交系(RIL)的双亲本(Baguette 10 × Klein chaj)群体为研究对象，确定了与SF控制相关的基因组区域。进行了7次现场试验，以确定每RIL的SF BLUP值。使用商用芯片(Axiom®35K SNP Wheat Breeder 's Array, affmetrix)对ril进行基因分型。用857个SNP标记构建连锁图谱，并进行SF QTL定位。SF的狭义遗传力为0.89。在染色体2D、4A和7A上发现3个与SF相关的基因组区(QTL)。这3个QTL解释的遗传变异比例为32%，QTL间不存在显著的上位交互作用。

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 农林科学-农艺学

CiteScore

2.40

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 The article must be unpublished.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.