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Introgression of the low phytic acid locus (lpa2) into elite maize (Zea mays L.) inbreds through marker‑assisted backcross breeding (MABB)

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Title Introgression of the low phytic acid locus (lpa2) into elite maize (Zea mays L.) inbreds through marker‑assisted backcross breeding (MABB)
Not Available
 
Creator K. R. Yathish
Chikkappa Gangadhar Karjagi
Shivraj Singh Gangoliya
A. Kumar
J. Preeti
Hemant Kumar Yadav
Shraddha Srivastava
Santosh Kumar
H. K. M. Swamy
Alla Singh
Ramesh Kumar Phagna
Abhijit Kumar Das
Javaji Chandra Sekhar
Firoz Hossain
Sujay Rakshit
Ravindra N. Gadag
 
Subject Inorganic phosphorus · Maize · Marker assisted backcross breeding · Near-isogenic lines · Phytic acid
 
Description Not Available
Phytic acid (PA) is an important antinutritional
component in maize that affects the availability
of major micro-nutrients like di- and multivalent
mineral cations like iron (Fe) and zinc (Zn).
The long-term consumption of maize as a staple food
crop leads to micronutrient malnutrition especially
iron and zinc deficiency in the human population. In
addition, it also acts as a storehouse of a major part of
mineral phosphorous (P), approximately 80% of the
total P stored as phytate P is not available to monogastric
animals like humans and poultry birds, and it gets excreted as such, leading to one of the major
environmental pollution called eutrophication. Of the
various low phytic acid (lpa) mutants, lpa2-2 generated
through mutagenesis reduces PA by 30%. BML 6
and BML 45, the parents of the popular maize hybrid
DHM 121 with high PA were selected to introgress
lpa2-2 through marker-assisted backcross breeding
(MABB). The percent recurrent parental genome
(RPG) in the selected BC2F2
plants ranged from 88.68
to 91.04% and 90.09–91.51% in the genetic background
of BML 6 and BML 45, respectively. Based
on the highest percentage of RPG, best five BC2F2
plants, viz., #3190, #3283, #3230, #3263 and #3292
with RPG 88.68–91.04% in the genetic background of
BML 6 and #3720, #3776, #3717, #3828 and #3832
with RPG 90.09–91.51% in the genetic background
of BML 45 were advanced to BC2F3.
The newly
developed near-isogenic lines (NILs) possessed low
phytate content (2.37 mg/g in BML 6 and 2.40 mg/g
in BML 45) compared to 3.59 mg/g and 3.16 mg/g in
recurrent parents BML 6 and BML 45, respectively
thereby reducing the phytate by an average of 34 and
24 per cent, respectively. These newly developed
progenies were similar to their recurrent parents for
various morphological traits. These inbreds assume
great significance in alleviating Fe and Zn deficiencies
in worldwide.
Not Available
 
Date 2023-02-03T15:17:55Z
2023-02-03T15:17:55Z
2022-08-16
 
Type Research Paper
 
Identifier Yathish KR, Chikkappa GK, Shivraj SG, A. Kumar, J. Preeti, Hemant KY, Shraddha S, Santosh K, H. K. M. Swamy, A Singh, Ramesh KP, Abhijit K Das, JC Sekhar, F Hossain, S Rakshit and Ravindra N. Gadag (2022) Introgression of the low phytic acid locus (lpa2) into elite maize (Zea mays L.) inbreds through marker‑assisted backcross breeding (MABB). Euphytica 218:127 https://doi.org/10.1007/s10681-022-03076-y.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/75967
 
Language English
 
Relation Not Available;
 
Publisher Springer Nature