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Genetic studies in segregating single and double cross F2 population of purple brinjal (Solanum melongena L.)

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Title Genetic studies in segregating single and double cross F2 population of purple brinjal (Solanum melongena L.)
 
Creator Manoj C.Naik
 
Contributor R.V.Patil
 
Subject Horticulture
 
Description single cross and double cross F1 hybrids, to assess the magnitude of variability in F2
generation, to know the extent of residual heterosis present in F2 and to isolate economic
segregants for yield and yield attributing characters in segregating single and double cross F2
populations.
The study on comparison of the SCF1 and DCF1s revealed that the crosses S.C.H.N.12
x S.C.H.N.15 and S.C.H.N.12 x S.C.H.N.16 were potential heterotic DCF1s. The yielding
capacity of S.C.H.N.12 x S.C.H.N.15 was 1.87 kg per plant (32.16 % CV) and it had
145.30% and 54.93% heterosis over commercial check and best SCF1 respectively. The CV
of DCF1s range from 32.16 per cent to 50.86per cent for yield per plant, 13.68 to 17.09 per
cent for fruit weight and 39.09 to 46.13% for no. of fruits per plant. The analysis of
variability indicated DCF2 population had greater genetic variability over SCF2 for all
characters as exhibited by higher values for mean, range, CV (%), PV, GV, PCV and GCV
values. S.C.H.N.12 among SCF2 and R-I/12 x 15 (2-16), R-I/12 x 15 (3-22) and R-I/16 x 18
(4-34) in DCF2 were potential segregating population with highest variability as indicated by
higher PCV and GCV values.
The residual heterosis in F2 range from 57.22 [R-I/12 x 17 (4-41)] to 71.51per cent
(S.C.H.N. 18) in the population for yield per plant. All the DCF2 and S.C.H.N.12 had higher
mean values for yield per plant as compared to CC and local check. Among DCF2, R-I/12 x
15 (2-16) and R-I/12 x 16 (2-18) and S.C.H.N.12 in SCF2 exhibited higher frequency of
desirable economic segregants for yield per plant. The R-I/12 x 15 (2-16) (2-13 and R-I/16 x
18 (4-34) (3-22) were the selections made for further development into purelines after
repeated selfing.
 
Date 2016-10-24T18:08:04Z
2016-10-24T18:08:04Z
2007
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81629
 
Format application/pdf
 
Publisher UAS, Dharwad