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]
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Creator |
MUNGRA, KANULAL D.
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Contributor |
JADHAV, B.D.
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Subject |
environment, hybrids, biological phenomena, sorghum, yields, diseases, heterosis, planting, animal husbandry, crossing over
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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 |
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Date |
2016-03-19T11:20:40Z
2016-03-19T11:20:40Z 2008-11 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/65303
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Language |
en
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Format |
application/pdf
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Publisher |
Navsari Agricultural University, Navsari
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