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MORPHOLOGICAL TRAITS AND DNA MARKER ASSAY BASED DIVERSITY IN SELECTED CLONES OF SUGARCANE (Saccharum officinarum L.)

KrishiKosh

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Title MORPHOLOGICAL TRAITS AND DNA MARKER ASSAY BASED DIVERSITY IN SELECTED CLONES OF SUGARCANE (Saccharum officinarum L.)
 
Creator GURUPRASAD, HIREMATH
 
Contributor Nagaraja, T E
 
Description The present diversity study comprising 35 selected clones of sugarcane was
conducted in RCBD with two replications during 2011-12 at Zonal Agricultural
Research Station, V.C. Farm, Mandya.
The analysis of variance indicated the presence of significant variability among
the genotypes for all traits studied. Cane yield, CCS (t/ha) and single cane weight
exhibited high GCV and PCV coupled with high GAM, whereas high heritability
coupled with GAM was exhibited by millable cane number, cane yield, sugar yield and
number of internodes indicating the role of additive genes for the expression of these
traits, hence the selection for these traits could be effective. Cane yield and CCS (t/ha)
had significant positive association with number of tillers, NMC, cane length and
single cane weight. CCS (t/ha) also had significant positive correlations with cane and
CCS cane yield. Cane length and CCS per cent exhibited highest direct effects on cane
and sugar yields, respectively.
Eight clusters were formed on grouping of clones based on Mahalanobis D2
distances. The results indicated that cluster V and VII involved highly diverse
genotypes can be chosen for recombination breeding and isolating desirable clone
combinations. Cluster IV (VCF 0721-01 and VCF 0842-03) and II (VCF 0830-04 and
VCF 0838-07) were found superior for quality and cane yield, respectively. The
clustering of 35 clones into six clusters based on 30 STMS marker analysis also
revealed divergence between the genotypes. Among six clusters, cluster III was the
largest with 26 clones. The genotype VCF 0705-05 and VCF 0815-08 and VCF 0838-
07 were highly diverse at molecular level.
The study also recognised that, the genotypes, VCF 0830-04, VCF 0629-04,
VCF 0712-02, VCF 0721-01 and VCF 0842-08 were superior for CCS (t/ha) and cane
yield. Hence these genotypes can be selected and advanced through further breeding
programme.
 
Date 2016-12-06T10:03:15Z
2016-12-06T10:03:15Z
2012-08-04
 
Type Thesis
 
Identifier TH-10280
http://krishikosh.egranth.ac.in/handle/1/89250
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore