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Assessing Genetic Diversity of Newly Developed Winter Maize (Zea mays L.) Inbred Lines

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Title Assessing Genetic Diversity of Newly Developed Winter Maize (Zea mays L.) Inbred Lines
Not Available
 
Creator S B Singh
R K Kasana
Santosh Kumar
Ramesh Kumar
 
Subject Diversity, D2 analysis, Inbred lines, Principal component analysis, Winter maize
 
Description Not Available
Understanding the genetic diversity among the breeding materials is fundamental consideration for any crop
improvement programme. Ninety seven newly developed winters maize inbred lines along with thirteen released
inbreds were evaluated to assess the genetic diversity based on morphological traits. Analysis of variance
revealed significant differences for 13 characters studied. All the inbred lines were grouped into fifteen clusters
with ten solitary clusters. The D 2 statistics displayed that cluster I being largest group, with maximum inbred
lines (37) followed by Cluster II (24), Cluster III (16) Cluster IV (14) and Cluster V (9). The maximum intercluster
distance was observed between cluster V and cluster XV (26.96) followed by cluster IV and XV (26.12),
cluster V and XII (24.55) suggesting higher probability of heterotic combinations if parents selected from these
pairs of groups. Cluster IV has the highest intra-cluster distance (11.59). Maximum genetic divergence as per
cent was contributed by 100 kernel weight (39.45) followed by days to anthesis (22.64), grain filling duration
(10.31) and grain yield (10.50). On the basis of per se performance, intra and inter cluster distance, inbred
lines IMLSB-2005, IMLSB-1000-2, IMLSB-182-1, IMLSB-719-1, IMLSB-164-1, IMLSB-457-2, IMLSB-2083,
IMLSB-1298-2, IMLSB-1298-5 and IMLSB-246-2 were identified that might be used in maize improvement
programme to develop superior hybrid combinations.
ICAR-IIMR
 
Date 2020-12-16T06:05:48Z
2020-12-16T06:05:48Z
2020-07-22
 
Type Research Paper
 
Identifier Singh, S.B., Kasana, R. K., Kumar, S. and Kumar, R. 2020. Assessing Genetic Diversity of Newly Developed Winter Maize (Zea mays L.) Inbred Lines. Indian J. Plant Genet. Resour. 33(1): 68–76
ISSN 0971-8184
http://krishi.icar.gov.in/jspui/handle/123456789/43333
 
Language English
 
Relation 33(1);
 
Publisher ICAR-NBPGR, New Delhi