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Genetic Analysis for Fodder Yield and Quality Parameters in Single cut Forage Sorghum [Sorghum bicolor (L.) Moench]

KrishiKosh

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Title Genetic Analysis for Fodder Yield and Quality Parameters in Single cut Forage Sorghum [Sorghum bicolor (L.) Moench]
 
Creator MUNGRA, KANULAL D.
 
Contributor JADHAV, B.D.
 
Subject environment, hybrids, biological phenomena, sorghum, yields, diseases, heterosis, planting, animal husbandry, crossing over
 
Description The present investigation to access the magnitude of
heterosis, combining ability and stability parameters for fodder yield and
its contributing characters was made in forage sorghum following diallel
crossing method-2, Model-1 involving 8 diverse genotypes of sorghum.
The experimental material consisting of 8 parents their 28 hybrids and
one national check were tested in randomized block design with three
replications at Navsari and Surat locations of Navsari Agricultural
University during kharif 2007 (Navsari and Surat) and summer 2008
(Surat). Observation on yield, quality concerns and yield related
characters were recorded in all 3 environments.
The analysis of variance indicated significant differences
among genotypes for all the characters under study. The magnitude for
heterosis was high for green fodder yield, dry matter yield and HCN
content and low for leaf spot diseases and early vigour. Significant
heterotic effects and high per se performance with regard to green
fodder and dry matter yield was recorded by the hybrids SRF 286 x SRF
305 and GFS 3 x GFS 4. Crosses exhibiting high heterobeltiosis and
standard heterosis for fodder yield also indicated high heterosis for one
or two yield attributing traits over their better parent and standard
check.
The combining ability analysis indicated importance of both
additive and non-additive type of gene actions for expression of these
traits. However, for yield and some other traits non-additive type of
gene action was predominant while for earliness, stem diameter, leaf
width, protein content and HCN content additive type of gene action
was predominant.
The parent SRF 286, SRF 305 and RSSV 104 were good
general combiners for yield characters and other yield and quality
contributing characters. The close association between the hybrid mean
performance and sca effects were also observed. Further, high yielding
hybrids SRF 286 x SRF 305, GFS 3 x GFS 4 and RSSV 104 x AKFSV2 showed
significant sca effects for green fodder as well as dry matter yield and
one or more of its related characters can be utilized for commercial
hybrid development . The hybrid SRF 305 x RSSV 104 with good per se
performance and high standard heterosis with negligible amount of sca
effect can be utilized for isolating transgressive segregants.
The genotype x environment (G X E) components were
substantial for all most all the characters under study. Further the large
portion of G x E (linear) is significant and higher than corresponding nonlinear
parts.
Amongst parent SRF 286, SRF 305 and SRF 311 for green
fodder yield; GFS 4 and SSG 59-3 for earliness and stem diameter and
RSSV 104 for dry matter yield were noted as stable.
The high yielding hybrids SRF 286 x SRF 305, RSSV 104 X
AKFSV 2, RSSV 104 x GFS 4 and SRF 286 x SRF 311 registered as stable for
green fodder yield. The stability of these hybrids also synchronized with
its stability for major yield related and quality imparting traits. Further,
the hybrids and parents specifically suited for favourable and
unfavourable environmental situation are also identified.
On the basis of per se performance, heterosis, combining
ability estimates, nature of gene action and stability involved in the
expression of yield and its components SRF 286 x SRF 305, RSSV 104 x
AKFSV 2, RSSV 104 x GFS 4 and SRF 286 x SRF 311 have been advocated
for exploitation in practical breeding programme
 
Date 2016-03-19T11:20:40Z
2016-03-19T11:20:40Z
2008-11
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/65303
 
Language en
 
Format application/pdf
 
Publisher Navsari Agricultural University, Navsari