Genetic variability of some agronomic traits in a collection of wheat (Triticum turgidum L. ssp) genotypes under South Mediterranean growth conditions

IF 2.6 3区农林科学 Q1 AGRONOMY

Italian Journal of Agronomy Pub Date : 2021-11-16 DOI:10.4081/ija.2021.1976

A. Bendjama, Soumia Ramdani

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引用次数: 3

Abstract

Genetic variability of some agronomic traits were investigated in 60 tetraploid wheat accessions (Triticum turgidum L. ssp) under rainfed conditions. The results indicated the presence of sufficient variability for all measured traits.The highest phenotypic and genotypic coefficient of variation was recorded for yield and awn length. High heritability coupled with high genetic advance and high expected response to selection recorded for thousand-grain weight, awn length, and the number of grains per spike. Cluster analysis grouped the 60 wheat genotypes into five clusters. Clusters are relatively formed according to the geographical origin of the genotypes. Cluster III carried entries having the best combinations for all the traits; in which genotypes PI 127106, PI 192658, PI 29051 and PI67343 can represent an important reservoir of useful genes for the development of new wheat cultivars. Thousand-grain weight, biomass, awn length and harvest index could be used as a selection criterion for hybridization programs in the future. Highlights - The genetic variability of 9 traits of 60 wheat varieties was investigated. - There was great variability among wheat genotype for all measured traits. - There were wheat varieties shows highest phenotypic and genotypic coefficient of variation. - Some wheat genotypes may be desired allele reservoirs. - Some traits can be an alternative in wheat selection.

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南地中海生长条件下小麦（Triticum turgidum L.ssp）基因型某些农艺性状的遗传变异

研究了60份四倍体小麦（Triticum turgidum L.ssp）在雨养条件下部分农艺性状的遗传变异。结果表明，所有测量的性状都存在足够的变异性。产量和芒长的表型和基因型变异系数最高。千粒重、芒长和每穗粒数的高遗传力与高遗传进展和对选择的高期望响应相结合。聚类分析将60个小麦基因型分为5个聚类。聚类是根据基因型的地理来源相对形成的。聚类III携带的条目具有所有性状的最佳组合；其中基因型PI127106、PI192658、PI29051和PI67343可以代表用于小麦新品种开发的有用基因的重要库。千粒重、生物量、芒长和收获指数可作为今后杂交项目的选择标准。亮点-对60个小麦品种的9个性状的遗传变异性进行了研究所有测定的性状在小麦基因型之间都存在很大的变异性有小麦品种表现出最高的表型和基因型变异系数一些小麦基因型可能是所需的等位基因库一些性状可以作为小麦选择的替代品。

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来源期刊

Italian Journal of Agronomy AGRONOMY-

CiteScore

4.20

自引率

4.50%

发文量

审稿时长

10 weeks

期刊介绍： The Italian Journal of Agronomy (IJA) is the official journal of the Italian Society for Agronomy. It publishes quarterly original articles and reviews reporting experimental and theoretical contributions to agronomy and crop science, with main emphasis on original articles from Italy and countries having similar agricultural conditions. The journal deals with all aspects of Agricultural and Environmental Sciences, the interactions between cropping systems and sustainable development. Multidisciplinary articles that bridge agronomy with ecology, environmental and social sciences are also welcome.