Phenotypic and genetic variability induced in Lehmann’s love grass (Eragrostis lehmanniana) through gamma irradiation

IF 0.9 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE Tropical Grasslands-Forrajes Tropicales Pub Date : 2022-01-31 DOI:10.17138/tgft(10)63-68

Alan Álvarez-Holguín, C. Morales-Nieto, C. Avendaño-Arrazate, Raúl Corrales-Lerma, F. Villarreal-Guerrero

引用次数: 0

Abstract

This study assessed the morphological and nutritional diversity induced through gamma irradiation in Lehmann’slove grass. Seed were irradiated at doses of 0, 100, 200, 300, 450, 600, 900, and 1400 Gy. Ten agronomic traits relatedwith forage quality were evaluated and used to select the mutants, which were confirmed by cluster analysis andmultivariate analysis of variance and then characterized by nutritional and molecular characterization. Mutants with16–20% less (p<0.05) lignin and 36–68% more protein content than the control genotype were found. Genetic distances of 0.38 and 0.49 also revealed differences (p<0.05) between the mutants and control genotype. The phenotypic and genetic variability, induced through gamma irradiation, resulted in the identification of two first generation mutants with outstanding agronomic traits and nutritional quality.

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γ辐射诱导的Lehmann 's love grass (Eragrostis lehmanniana)表型和遗传变异

本研究评价了γ辐照诱导下莱曼草的形态和营养多样性。种子辐照剂量分别为0、100、200、300、450、600、900和1400戈瑞。利用与牧草品质相关的10个农艺性状进行筛选，通过聚类分析和多变量方差分析对突变体进行鉴定，并进行营养和分子鉴定。与对照基因型相比，突变体木质素含量减少16 - 20% (p<0.05)，蛋白质含量增加36-68%。突变体与对照基因型的遗传距离分别为0.38和0.49 (p<0.05)。通过γ辐照诱导的表型和遗传变异，鉴定出两个具有优异农艺性状和营养品质的第一代突变体。

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来源期刊

Tropical Grasslands-Forrajes Tropicales Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The Journal publishes, in English or Spanish, Research Papers and Short Communications on research and development, as well as contributions from practitioners (Farmer Contributions) and Review Articles, related to pastures and forages in the tropics and subtropics. There is no regional focus; the information published should be of interest to a wide readership, encomprising researchers, academics, students, technicians, development workers and farmers. In general, the focus of the Journal is more on sown (''improved'') pastures and forages than on rangeland-specific aspects of natural grasslands, but exceptions are possible (e.g. when a submission is relevant for a particularly broad readership in the pasture and forage science community). The Journal will also consider the occasional publication of associated, but closely related, research in the form of an additional scientific communication platform [e.g. a re-make of the former Genetic Resources Communication series of the former Division of Tropical Crops and Pastures of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia]. Areas of particular interest to the Journal are: Forage Genetic Resources and Livestock Production[...] Environmental Functions of Forages[...] Socio-economic Aspects[...] Topics within the aforementioned areas may include: Diversity evaluation; Agronomy; Establishment (including fertilization); Management and utilization; Animal production; Nutritive value; Biotic stresses (pests and diseases, weeds); Abiotic stresses (soil fertility, water, temperature); Genetics and breeding; Biogeography and germplasm collections; Seed production; Ecology; Physiology; Rhizobiology (including BNF, BNI, mycorrhizae); Forage conservation; Economics; Multilocational experimentation; Modelling.