GENETIC ANALYSIS OF GRAIN YIELD PER PLANT AND OTHER TRAITS ON MAIZE EARLY INBRED LINES, | ||
| Journal of Plant Production | ||
| Article 5, Volume 27, Issue 4, April 2002, Pages 2019-2026 PDF (2.81 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2002.253954 | ||
| Authors | ||
| A. A. EI-Shenawy,; H. E. Mosa; R. S. H. Aly | ||
| Maize Research Program,Field Crops Research Institute, A.R.C.,Egypt. | ||
| Abstract | ||
| A half-diallel set of crosses involving nine white early inbred lines of maize were evaluated at the two locations Sakha and Sids. The objectives were to estimates the type and relative amount of genetic variance components and their interaction with the environment for tasseling date, ear position, late wilt resistance, number of ears/100 plant, 100-kernels weight and grain yield/plant. Genetically analyzed by the procedures developed by Griffing (1956) method-2 model-1 . Mean squares of locations (L) were significant for all studied traits. The significance of genotypes and their partitions parents (P), crosses (C) and P vs C (heterosis) were detected for all studied traits except ( P vs C) for ear position. The mean squares of interaction between genotypes and their partitions with locations were significant for all studied traits except C x Land P vs C x L for 100-kernel weight. Both additive and non-additive genetic effects were controlling the genetic system for all studied traits. The additive genetic effects played an important role in the expression of all studied traits except grain yield/plant. The interaction between GCA and SCA with location were significant for ali studied traits except SCA x location for 100-kernel weight. The parental inbred lines Sd-62E and Sk-6056 seemed to be the best combiner for grain yield/plant. Sk-6054 and Sk-4051 were the best for earliness. Sd- 62E and SO-7E were the first comber for late wilt resistance.The highest desirable SCA effects were detected in the crosses; (Sd-7E x Sk-4051), (Sd-7E x Sd-34E), (Sk- 34E x Sk-4054), (Sk-4051 x Sk-6056), (Sd-62E x Sk-4054) and (Sd-34E x Sk-6056) for grain yield/plant and most studied traits. | ||
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