PERFORMANCES AND CORRELATIONS OF PARENTAL LINES AND THEIR HYBRIDS FOR ECONOMICAL TRAITS OF CANOLA, Brassica napus L. | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 30, Issue 11, November 2005, Page 6603-6620 PDF (5.79 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237741 | ||||
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| Authors | ||||
| A. M. EI-Adl,1; A. H. Abd EI-Hadi1; M. M. Keshta2; E. F. EI-Azzony2 | ||||
| 1Dept. of Genetics, Faculty of Agriculture, Mansoura University, Egypt. | ||||
| 2Oil Crops Res. Sec. Field Crops Res. Inst., A.R.C., Giza, Egypt. | ||||
| Abstract | ||||
| This investigation was conducted to study the mean performances of 10 parental lines of canola and the F, hybrids among them. Complete diallel crosses mating design were used to obtain 45 F, hybrids and 45 F, reciprocal hybrids at three environments. These environments were: EI-Gamalia 200212003 (E1), EI-Serw 2002/2003 (E2) and EI-Serw 2003/2004 (E3). Different vegetative, yield traits and oil percent were studied. In the same time, the nature of association among pairs of studied traits were evaluated. The presence of significant variation which noticed among all studied traits makes it possible and necessary to compare the means of all genotypes to evaluate their performances. However, the inbred line 325 (Pa) appeared to be the earliest, while the parental line Serw 6 (P2) was the tallest and the best parent for N.se'/sil. The line Serw 37 (P3) had the larger N.pr.br./pl., while the line Serw 4 (P,) started its flowering branches lower than the earlier parents and it was the largest for S.Y./pl.. The Line '64 (Pro) was the best parent for 1000 S.W.gms. and oil %. The Line Serw sa (P5) was the best for N.sil./pl.. The combined data showed that the hybrid between P4 x P7 produced more oil % of 46.7 %, while the hybrid between P, x Ps produced the less oil of 36.7 %. The results also showed that the N.se'/sil. and N.sil'/pl. were very effective in the determination of S.Y./pl. in grams, while 1000 S.W.gms. trait was less effective. Therefore, selection for more N.sil'/pl. and more N.se'/sil. could increase the yield. The most desirable rph and rg correlations were obtained among S.Y./pl. gms. and N.sil.lpl. which showed positive and significant values. Therefore, these two traits showed a desirable association. This finding indicated that selection program to increase one trait would, indeed, increase the other. It could be also mention that all negative rph and rg correlations were insignificant. This result indicated that this type of association was not important, where the values of rph and rg correlations were small. The negative rph and rg correlations between 1000 S.W. gms. and N.sil'/pl. indicated that when plant had more siliqua, the size and weight of seeds become less. | ||||
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