Maximum yield per unit area may be obtained by growing maize hybrids that can withstand high plant density. Maize genotypes differ in plant density tolerance (PDT). The objectives of the present investigation were to identify the density tolerant genotypes, to estimate the superi...
Open access
Research Article10.9734/ARJA/2017/36053
Type of gene action, heritability and genetic advance from selection are prerequisites for starting a breeding program for developing plant density tolerant variety of maize. The objective of the present investigation was to estimate general (GCA) and specific (SCA) combining abi...
Open access
Research Article10.9734/AJAAR/2017/36040
Secondary Traits and Selection Environment of Plant Density Tolerance in Maize Inbreds and Testcrosses Secondary traits in maize are used in screening programs for selecting tolerant genotypes to a specific abiotic stress. Indirect selection would be effective if heritability of...
Open access
Research Article10.9734/JABB/2017/35510
Knowledge on combining ability and type of gene action of available germplasm would help maize breeder in identifying proper parents and breeding procedure for improving plant density tolerance (PDT). A split plot experiment with three replications was carried out; where plant de...
Open access
Research Article10.9734/JALSI/2017/35508
Information on the heterosis of maize germplasm is essential in maximizing the effectiveness of hybrid development. The objectives of the present study were to assess the effects of elevated plant density on mean performance and heterobeltiosis and to identify the best testcrosse...
Open access
Research Article10.9734/ACRI/2017/35509
Breeding wheat cultivars with improved adaptation to low soil-N, has gained importance worldwide in order to decrease N fertilizer consumption and overcome the ecological and economic problems of the misuse of this fertilizer. Identification of wheat crosses that show useful hete...
Open access
Research Article10.9734/BBJ/2016/21916
To start an accurate wheat breeding program for improving low-N tolerance, information on the type of gene action controlling the inheritance of grain yield and quality traits under contrasting N environments should be available, which is the objective of the present investigatio...
Open access
Research Article10.9734/ARRB/2015/21939
There is an increased interest worldwide in developing wheat cultivars that are more efficient in utilizing nitrogen (N) and better fitted to N limitations. The objective of this investigation was to study the effects of contrasting soil N levels on the genetic parameters control...
Open access
Research Article10.9734/ARRB/2015/21938
Developing nitrogen use efficient (NUE) genotypes of wheat could reduce crop N fertilizer requirement. However, selection for NUE alone can be difficult and less efficient than associating it with one or more of selection criteria. The aim of this study was to determine selection...
Open access
Research Article10.9734/JAERI/2016/21917
Screening wheat germplasm based on grain yield (GYPP) and nitrogen use efficiency (NUE) under contrasting N environments may be useful in identifying N-efficient (low-N tolerant) and responsive genotypes of great value in breeding programs. The main aim of the present study was t...
Open access
Research Article10.9734/IJPSS/2015/21915
One of the reasons Egypt do not achieve very high maize crop yield is that cultivars used commercially are bred and grown under low plant density (ca 20,000 plants/ fed; one fed= 4200 m2). Therefore, the objective of the present study was to identify maize genotypes of tolerance...
Open access
Research Article10.9734/JABB/2015/15118
Increasing plant density and improving N-fertilizer rate along with the use of high-density tolerant genotypes would lead to maximize maize grain productivity from unit land area. The objective of this investigation was to match the functions of optimum plant density and adequate...
Open access
Research Article10.9734/JAERI/2015/14260
Maize grain yield response to elevated levels of soil nitrogen is dependent upon genotype of the cultivar. Thus the optimum rate of N-fertilizer differs from maize genotype to another according to its nitrogen use efficiency (NUE). The main objective of this study was to determin...
Open access
Research Article10.9734/IJPSS/2015/14228