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Open Access Article

International Journal of Genetics Frontiers. 2020; 1: (1) 4; 18-23 ; DOI: 10.12208/j.ijgf.20200004.

Genetic Variations, Heritability and Genetic Advance Studies among Okra Accessions grown in different Agro-ecological Zones in Nigeria
在尼日利亚不同农业生态区种植的黄秋葵种质的遗传变异,遗传力和遗传研究

作者: Agbowuro, G. O.*, Salami, A. E., Awoyemi, S. O., Ogunwale G. I., Kehinde-Fadare, A. F., Olajide O. O.

伊丽莎白大学生物科学系

埃基蒂州立大学作物园艺与景观设计系

阿库雷联邦农业学院作物生产技术系

阿库雷联邦工业大学农业技术学院

*通讯作者: Agbowuro, G. O.,单位:伊丽莎白大学生物科学系;

发布时间: 2020/6/17 11:28:23 总浏览量: 322

摘要

在良好的植物育种方法的帮助下,作物品种内某种程度的变异对其改善至关重要。研究进行了一项野外研究实验,目的是估计尼日利亚不同农业生态区中生长的秋葵种质的遗传变异和遗传力。从尼日利亚不同农业生态区的不同地点获得了二十种秋葵。 2018年4月至2018年8月,在Ekiti州立大学教学与研究农场评估了20株秋葵。这二十种黄秋葵种质组成了这种处理方法,并在RCBD中将其分为三份重复样本。对于所有研究的性状,结果均具有高度显着性(p <0.01)。本研究中表型变异系数的幅度略高于基因型变异系数,这表明环境对遗传性能的估计影响不大。在所研究的性状中,表型和基因型变异系数较高。遗传力估计值从天数的75.04%到开花的50%到重量为100颗种子的98.85%不等。对所有研究性状均观察到高遗传力和高遗传优势,表明它们受加性基因作用的控制,这可以通过简单的选择来改善,除了开花到50%的天数,其最低遗传力值加上最低遗传优势值小于10%。

关键词: 遗传力,遗传进展,改良,遗传变异性,秋葵

Abstract

Some level of variation within crop varieties is highly important for its improvement with the aids of good plant breeding methods. A field research experiment was carried out with the aim to estimate genetic variation and heritability in the okra accessions grown in different agro-ecological zones in Nigeria. Twenty okra accessions were obtained from various locations in different agro-ecological zones of Nigeria. Twenty okra accessions were evaluated between April to August 2018 at Ekiti State University Teaching and Research Farm, Ekiti State. These twenty okra accessions constituted the treatment, which was lied out in a RCBD in a three replicates. The result were highly significant (p<0.01) for all the traits studied. Magnitude of the phenotypic coefficient of variances were slightly higher than genotypic coefficient of variances in this study which showed that environment did not much influence the estimates of genetic performance. The coefficient of phenotypic and genotypic variances were high in the traits studied. Heritability estimates ranges from 75.04% for days to 50% flowering to 98.85% for weight of 100 seeds. High heritability with high genetic advance were observed for all the studied traits indicating that they are governed by additive gene action and this could be improved through simple selection except days to 50% flowering with the lowest heritability value coupled with the lowest genetic advance value lesser than 10%.

Key words: Heritability, Genetic advance, Improvement, Genetic variability, Okra

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引用本文

Agbowuro, G. O., Salami, A. E., Awoyemi, S. O., Ogunwale G. I., Kehinde-Fadare, A. F., Olajide O. O., 在尼日利亚不同农业生态区种植的黄秋葵种质的遗传变异,遗传力和遗传研究[J]. 国际遗传前沿杂志, 2020; 1: (1) : 18-23.