Genetic studies in segregating single and double cross F2 populations of striped brinjal (Solanum melongena L.)
KrishiKosh
View Archive InfoField | Value | |
Title |
Genetic studies in segregating single and double cross F2 populations of striped brinjal (Solanum melongena L.)
|
|
Creator |
H.G.Ravishankar
|
|
Contributor |
R.V.Patil
|
|
Subject |
Horticulture
|
|
Description |
An investigation was undertaken in brinjal (Solanum melongena L.) to compare the single cross and double cross F1 hybrids, to assess the magnitude of variability in F2 generation, to isolate economic segregants for yield and to study the response to selection for yield and yield attributing traits in segregating single and double cross F2 populations. The comparative study of SCF1s and DCF1s revealed that the double cross hybrids (729.11g/plant) did not out yield the mean of single cross hybrids (704.52g/plants) significantly showing the on-par performance with each other under prevailing sub optimal soil and environment conditions. But over the fluctuating environment, double crosses greatly stabilized the yield levels. The DCF1s, S.C.H.N.1 x S.C.H.N.4 (730.53g/plant) and S.C.H.N.2 x S.C.H.N.5 (727.7g/plant) and SCF1s, S.C.H.N.2 (760.05g/plant) were better economic hybrids for yield per plant. Analysis of variability indicated DCF2 population had greater genetic variability over SCF2 as exhibited by higher values for mean, range, CV (%), PV, GV, PCV and GCV values. S.C.H.N.4 among SCF2 and S.C.H.N.2 x S.C.H.N.5 in DCF2 were potential segregating population with highest variability. Among segregating population, S.C.H.N.5 (34.54%) and S.C.H.N.2x S.C.H.N.5 (56.36%) in double cross F2. Among SCF2, R-I/ S.C.H.N.1 (13-5), R-I/ S.C.H.N.2 (4-11) and R-I/ S.C.H.N.4 (13-9) and in DCF2, R-I/ S.C.H.N.1 x S.C.H.N.4 (2-17)(2-2), R-I/ S.C.H.N.1 x S.C.H.N.4 (2-17)(7-7), R-I/ S.C.H.N.2 x S.C.H.N.5 (2-7)(4-10) and R-I/ S.C.H.N.2 x S.C.H.N.5 (2-7)(4-10 were the selections made for further development into purelines after repeated selfing. Association analysis revealed that yield per plant had significant positive association with number of fruits per plant, average fruit weight. Path analysis showed that number of fruits per plant and fruit weight had positive direct effect on fruit yield. However, length of fruits, number of fruits per cluster, days to first flowering and number of branches showed negative direct effect |
|
Date |
2016-10-24T18:06:42Z
2016-10-24T18:06:42Z 2007 |
|
Type |
Thesis
|
|
Identifier |
http://krishikosh.egranth.ac.in/handle/1/81628
|
|
Format |
application/pdf
|
|
Publisher |
UAS, Dharwad
|
|