Genetic Mapping of Milling Quality Traits in Lentil (Lens culinaris Medik.)

Overview
TitleGenetic Mapping of Milling Quality Traits in Lentil (Lens culinaris Medik.)
Authors
TypeJournal Article
JournalThe Plant Genome
Volume11
Start Page170092
DOI10.3835/plantgenome2017.10.0092

Abstract

Milling qualities are key traits for the red lentil (Lens culinaris Medik.) industry as price is largely determined by dhal recovery yield. Dhal milling involves removal of the seed coat and splitting of the cotyledon to produce either splits or footballs (cotyledons still attached). The objectives of the study were to determine the heritability of the milling traits dehulling efficiency (DE), milling recovery (MR), and football recovery (FR) and to identify the genomic regions controlling them. We used a lentil recombinant inbred population from the cross ‘CDC Robin’ × ‘946a-46’, which have contrasting seed characteristics. The mapping population consists of 127 F7–derived lentil recombinant inbred lines that were phenotyped for milling quality parameters from four site–years in Saskatchewan, Canada. A total of 534 single nucleotide polymorphism markers, seven simple sequence repeat markers, and four morphological markers were used for quantitative trait locus (QTL) mapping. The broad-sense heritability was moderate for DE and MR and relatively low for FR. Milling quality traits were significantly correlated with seed shape (seed diameter and seed plumpness). Multiple QTLs for milling traits were detected in six of seven linkage groups (LGs). The most stable QTLs governing DE and MR were clustered on LGs 1, 2, 3, and 7, whereas FR QTLs were clustered on LGs 4, 5, 6, and 7. The molecular markers identified for these traits could be used for improving milling quality in lentil breeding programs.

Citation

Subedi Maya , Bett Kirstin E , Khazaei Hamid , Vandenberg Albert . Genetic Mapping of Milling Quality Traits in Lentil (Lens culinaris Medik.). The Plant Genome. 2018; 11.

Related Species
Related Species 

Lentil (Lens culinaris Medik.) is an important pulse crop with annual production of 3-4 Mt across 70 countries (Cubero et al. 2009. DOI 10.1079/9781845934873.0000; pg. 13). Lentils are a good source of protein, carbohydrates, micronutrients and vitamins for human nutrition and is consumed in more than 120 countries. Furthermore, their small seed size and flat shape make them relatively quick cooking and easily decorticated compared to most other grain legumes (Sharpe et al. 2013. BMC Genomics. DOI 10.1186/1471-2164-14-192). The Lentil plant has a bushy growth habit with a height of about 40 cm; the seeds are lens-shaped and usually grow two per pod. ... [more]

 
Research Area
Research Area 
Breeding & Genetics

Plant breeding is the art and science of changing the traits of plants in order to produce desired characteristics. Plant breeding can be accomplished through many different techniques ranging from simply selecting plants with desirable characteristics for propagation, to more complex molecular techniques. ... [more]