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Diversification of QPM germplasm through magic Approach

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Title Diversification of QPM germplasm through magic Approach
Not Available
 
Creator Kumar R.
Das A.K.
Singh S.B.
Neelam S.
Chaudhary D.P.
Kaur Y.
Suby S.B.
Aggarwal S.K.
Sujay Rakshit
 
Subject Maize, Diversification
 
Description Not Available
Maize is considered as ‘Queen’ of cereals, however it is deficient in two essential
amino acids i.e. lysine and tryptophan. Quality Protein Maize (QPM) has double the
amount of tryptophan and lysine content as compared to normal maize. The QPM
germplasm has narrow genetic base thereby difficult to improve for high grain yield.
The QPM germplasm needs to be diversified through different means like Mass
Assisted Selection (MAS) and Multi parent Advanced Generation Inter cross
(MAGIC) approach. The present study was conducted keeping in mind the
diversification of QPM germplasm using MAGIC approach. A set of 48 inbred lines
(24 QPM and 24 normal lines) were selected on the basis of perse performance and
these lines were crossed with two diverse testers i.e. LM 13 & LM 14 to generate the
information on heterotic grouping and simultaneously diversity studies were also
carried out using SSR markers. The dendogram clearly showed that the QPM and
normal germplasm is falling in different clusters. Based on heterotic grouping data
and diversity analysis the lines were selected for making cross combinations within
heterotic groups. The normal lines of one group were crossed with QPM lines of the
same group and vice versa. Four crosses were made in similar fashion viz., for
heterotic group A, DML 2052  DQL 2111 and DML 1837  DQL 2303and for
heterotic group B, DML 1596  DQL 2180 and DML 1812  DQL 2290. The two
crosses made for group A will again be crossed among themselves similarly in case of
group A and then new lines will be synthesize. Desirable QPM lines will be advanced
to next generation based on the biochemical data and these lines after reaching S6 S7
stage, will be tested for per se performance and then best lines will be used for
crossing programme for development of new hybrids
MTAI
 
Date 2021-01-21T11:08:26Z
2021-01-21T11:08:26Z
2020-02-09
 
Type Proceedings
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/44947
 
Language English
 
Relation Not Available;
 
Publisher Not Available