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Estimation of Heterosis of some productive traits for hybrids of maize(Zea mays) under industrial infection by large corn stem borer Sesamiacretica

تقدير قوة الهجين لبعض الصفات الإنتاجية لهجن من الذرة الصفراء (Zea mays) تحت ظروف العدوى الصناعية بحفار ساق الذرة الكبير Sesamiacretica

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 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




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This study was conducted at the of field research station Sianow belong to the General Commission for Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of maize hybrids produced by using half Diallel the cross according to the design ofrandomized completeblocks (R.C.B.D), under industrial infection by large corn stem borer Sesamia cretica. Hybrids were compared with the control (Ghouta- 82). The hybrid (P1 × P2) Showed positive and highly significantheterosis for Ear diameter and tolerance forlarge corn stem borer compared with the average of the parents and the best parents and the check (Ghouta- 82). The hybrid (P2 × P6) showed positive and highly significant heterosis for the number of kernels per row compared with the average of the parents and the best parents and the check (Ghouta- 82). Also the hybrid (P1 × P6) showed positive and highly significant heterosis for the number of kernels per row relative to the average of the parents and the best parents and the check (Ghouta- 82). hybrid (P4 × P6) showed positive and highly significant heterosis for the recipe grain yield compared with the average of the parents and the best parents and the check (Ghouta- 82). The hybrid(P5 × P6) also showed positive and highly significant heterosis for the Percentage of dead hearts of the developing summit compared with the average of the parents and the best parents, and compared with the check (Ghouta- 82), therefore it can be considered as a sensitive hybrid.

References used
ABD EL-ATY.M.S and KATTA.Y.S. Estimation of Heterosis and combining ability for yield other agronomic traits in maize hybrids (Zeamays.L), J.Agric.Sci. Mansoura Univ, 27(8). 2002. P: 5137- 5146
ABD EL- SATTAR, A. A.; A. A. EL- HOSARY AND M. H. MOTAWEA. Genetic analysis of maize grain yield and its components by diallel crossing. Minufiya. J. Agric. Res., 24(1), 1999. P: 43-63
AL-AHMAD، S. A. Studies on some hybrids and strains of yellow maize. Ms. D. Fac. Of. Agric, Ain Shams, Univ, Egypt. 2001
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It was evaluated the susceptibility of 6 lines of maize, and fifteen maize crosses, against by large corn stem borer, Sesamia cretica Led under conditions Industrial infection. A study of the correlation coefficient showed linear relationship of yields by 100- Kernel weight.
The study was done at the field research station Sianow of General Commission for Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of 6 strains of maize Zea mays. L, and fifteen maize crosses obtained by half Diallel cro ss, against under conditions Industrial infection by large corn stem borer , Sesamia cretica Led. The experience was designed at randomized complete blocks (R.C.B.D). Strain IL.257-09)P1( expressed general high capacity to the attributes of Number of kernels per row(3.089), number of holes (-1.261). Strain IL.298-09 (P2) also expressed general high capacity to the attributes of Ear length (0.717), Intensity of damage (-0.432),% of yield loss (-6.022). strain IL.286-09 (P3) general high capacity to the attributes of diameter Ear (0.292), number of rows per ear (2.806). Strains IL.255-09 )P4) )0.036( and IL.228-09)P5) (0.969) also expressed general high capacity to the attributes of grain yield. Strain IL.262- 09(P6) expressed general high capacity to the attributes of 100- Kernel weight (1.942), infestation grain yield) 0.784), tunnel length (-5.629), Percentage of dead hearts (-1.132).
This study was conducted at the field of the research station Sianow of General Commission for Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of 6 strains of maize ( IL.257-09(P1), IL.298-09(P2 ) , IL.286-09 (P3 ), IL. 255-09( P4), IL.262-09 (P5), IL.228-09 (P6 )), against the natural infestation by large corn stem borer , Sesamia cretica Led. They were Compared with control (Ghouta 82).because it is the most growing variety in Syria.
This study was carried out during 2010-2011 growing seasons at the Maize Researches Department (G.C.S.A.R.) Damascus. To estimate heterosis for number of rows per ear, ear length, ear diameter, 100- kernel weight, and grain yield.

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