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Induced polyploidy: a tool for forage species improvement

Rauf, Saeed and Ortiz, Rodomiro and Malinowski, Dariusz P. and Clarindo, Wellington Ronildo and Kainat, Wardah and Shehzad, Muhammad and Waheed, Ummara and Hassan, Syed Wasim (2021). Induced polyploidy: a tool for forage species improvement. Agriculture. 11 , 210
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Abstract

Polyploidy means having more than two basic sets of chromosomes. Polyploid plants may be artificially obtained through chemical, physical and biological (2n gametes) methods. This approach allows an increased gene scope and expression, thus resulting in phenotypic changes such as yield and product quality. Nonetheless, breeding new cultivars through induced polyploidy should overcome deleterious effects that are partly contributed by genome and epigenome instability after polyploidization. Furthermore, shortening the time required from early chromosome set doubling to the final selection of high yielding superior polyploids is a must. Despite these hurdles, plant breeders have successfully obtained polyploid bred-germplasm in broad range of forages after optimizing methods, concentration and time, particularly when using colchicine. These experimental polyploids are a valuable tool for understanding gene expression, which seems to be driven by dosage dependent gene expression, altered gene regulation and epigenetic changes. Isozymes and DNA-based markers facilitated the identification of rare alleles for particular loci when compared with diploids, and also explained their heterozygosity, phenotypic plasticity and adaptability to diverse environments. Experimentally induced polyploid germplasm could enhance fresh herbage yield and quality, e.g., leaf protein content, leaf total soluble solids, water soluble carbohydrates and sucrose content. Offspring of experimentally obtained hybrids should undergo selection for several generations to improve their performance and stability.

Authors/Creators:Rauf, Saeed and Ortiz, Rodomiro and Malinowski, Dariusz P. and Clarindo, Wellington Ronildo and Kainat, Wardah and Shehzad, Muhammad and Waheed, Ummara and Hassan, Syed Wasim
Title:Induced polyploidy: a tool for forage species improvement
Series Name/Journal:Agriculture
Year of publishing :2021
Volume:11
Article number:210
Number of Pages:16
ISSN:2077-0472
Language:English
Publication Type:Article Review/Survey
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:amphiploidy, disomic polyploidy, synthetic polyploidy, plant genome evolution, polysomic polyploidy
URN:NBN:urn:nbn:se:slu:epsilon-p-110894
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-110894
Additional ID:
Type of IDID
DOI10.3390/agriculture11030210
ID Code:22757
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:15 Mar 2021 08:23
Metadata Last Modified:15 Mar 2021 08:31

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