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Identification and divergence studies of genotypes of Tamarindus indica (Fabaceae) with superior pod traits

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Relation http://oar.icrisat.org/6487/
 
Title Identification and divergence studies of genotypes of Tamarindus indica (Fabaceae) with superior pod traits
 
Creator Divakara, B N
Upadhyaya, H D
Fandohan, B
 
Subject Genetics and Genomics
 
Description Tamarind (Tamarindus indica L.) crop improvement depends on availability of diversity in the
germplasm collection. An evaluation of 35 genotypes of tamarind was carried out to assess variability and
character association and to identify diverse genotypes with superior pod traits. Variability studies for pod traits
revealed that, genotype CPT–9 was desirable for eight traits and genotype CPT–26 exhibited the lowest values
for six traits. A wide spread of variation was observed for pod weight (9.5 - 83.7 g), pulp weight (4.8 - 51.2 g),
seed weight (2.4 - 12.2 g), shell weight (2.3 - 18.1 g), pod length (9.0 - 25.5 cm) and pod width (1.8 - 5.5 cm).
Higher estimates of heritability for pod traits such as shell weight, pod weight, pulp weight, and vein weight
coupled with higher genetic advance indicated possibility of progress by selection. Pulp weight per pod showed
highest positive genotypic and phenotypic correlations with pod weight (rg = 0.99, rp = 0.98), vein weight
(0.92, 0.91), shell weight (0.93, 0.91), pod length (0.89, 0.79), pod width (0.92, 0.86), and pulp: seed ratio
(0.81, 0.77). The first three Principal Component (PCs) explained large portion (85.53 %) of the total variation.
Clustering analysis resulted into two broad clusters. Genotypes in cluster-2 (CPT–1, CPT–2, CPT–3, CPT–9,
CPT–10, CPT–11, CPT–17, CPT–22, and CPT–33) had combination of desirable traits and can be directly
selected for further improvement by breeding
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/6487/1/InJBioChem_Identification.pdf
Divakara, B N and Upadhyaya, H D and Fandohan, B (2012) Identification and divergence studies of genotypes of Tamarindus indica (Fabaceae) with superior pod traits. International Journal of Biological and Chemical Sciences. pp. 1-19. (In Press)