遗传力和结合亲本信息来确定循环双列的杂交数

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:10.1590/1984-70332021v21n2c34

Gabriela Inocente, D. D. Garbuglio, P. Araújo, P. Ruas

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引用次数: 1

摘要

在许多农作物中，杂交育种中使用的亲本数量使获得所有可能的双列杂交品种变得困难。因此，本研究以玉米为模式植物，在高遗传力和低遗传力性状的基础上，对完全双列和循环双列，包括亲本和不包括亲本之间的一般配合力(GCA)和特定配合力(SCA)的相关估计进行了量化。对于高遗传力性状，可以用较低的s值获得GCA估计值，而对于SCA估计值，应该使用接近亲本数量一半的s值。对于低遗传力性状，必须使用来自亲本的信息来获得SCA估计值。对于GCA估计，考虑到s=7时r大于0.70的稳定性，循环模型中必须使用大于父母数量一半的s值。

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Heritability and combined parental information to define the number of crosses in circulant diallels

In many agricultural crops, the number of parents used in cross breeding make it difficult to obtain all possible hybrids in diallels. Therefore, using maize as a model plant and based on traits with high and low heritabilities, the aim of the present study was to quantify the correlation estimates of the general combining ability (GCA) and specific combining ability (SCA) between a complete diallel and a circulant diallel, with and without the inclusion of parents. For the high heritability trait, the GCA estimates can be obtained with low s values, whereas for the SCA estimates, s values close to half the number of parents should be used. For the low heritability trait, information from parents must be used to obtain the SCA estimates. For the GCA estimates, considering the stabilization of r above 0.70 for s=7, s values greater than half the number of parents must be used in the circulant models.

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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 The article must be unpublished.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.