The main objective of the present investigation was to estimate combining ability, genetic variance components and heritability of 12 morphologic traits of maize under water stress (WS) and well watering (WW) at flowering stage. Fifteen F1 genotypes of incomplete diallel crosses...
Open access
Research Article10.9734/ACRI/2017/32618
Studying mode of gene action for maize traits under high plant density is a prerequisite for conducting an appropriate breeding program for developing high density tolerant varieties. The objective of this study was to assess maize diallel crosses for mean performance, combining...
Open access
Research Article10.9734/JABB/2017/31550
The objectives of the present investigation were to determine the type of gene action, heritability and expected genetic advance from selection for agronomic and yield traits of maize under high plant density (HD) stress and low density (non-stress) and to identify the parents th...
Open access
Research Article10.9734/JABB/2016/28413
Indirect selection would be effective if heritability of the secondary trait is greater than that of the primary trait and genetic correlation between them is strong. The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield...
Open access
Research Article10.9734/JABB/2016/28603
Aim: The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield under high plant density combined with drought stress at flowering and to identify whether the best selection environment is the optimum or stressed one. Study De...
Open access
Research Article10.9734/JALSI/2016/28582
The objectives of the present investigation were to determine the type of gene action, heritability and expected genetic advance from selection for agronomic and yield traits of maize under water stress and optimum irrigation and to identify the parents that contain favorable gen...
Open access
Research Article10.9734/ACRI/2016/28281
The objective of this study was to assess performance, heterosis and combining ability parameters and their interrelationships in six maize inbreds and their 15 diallel F1 crosses under different plant densities (D). Three experiments were carried out in each season of 2013 and 2...
Open access
Research Article10.9734/JALSI/2016/28067
The objectives of the present investigation were to determine genetic variance components, heritability and expected genetic advance from selection for agronomic traits of maize under water stress at flowering combined with high plant density; 95,200 plants/ha(WS-HD) as compared...
Open access
Research Article10.9734/JALSI/2016/28414
The objective of this study was to assess mean performance, heterosis and combining ability and their interrelationships in six maize inbreds and their 15 diallel F1 crosses under elevated plant density (D). Three experiments were carried out in each season of 2013 and 2014, usin...
Open access
Research Article10.9734/JABB/2016/28127
The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield under drought stress conditions and to identify whether the best selection environment is the optimum or stressed one. Diallel crosses among diverse inbreds in toleran...
Open access
Research Article10.9734/ARJA/2016/28552
The objective of the present investigation was to test the validity of predictions of GCA and SCA effects from mean performance and/or heterobeltiosis for agronomic and yield traits under elevated plant density (D) combined with water deficit. Six maize inbreds varying in high-D...
Open access
Research Article10.9734/ARJA/2016/28126
Information on heterosis and combining ability of available germplasm would help maize breeder in identifying proper genotypes and breeding procedures for improving tolerant varieties to water stress. The objective of this investigation was to assess the performance, heterobelti...
Open access
Research Article10.9734/ACRI/2016/27508
Selecting superior parents for hybrid combinations and studying the nature of genetic variation are prerequisites for starting a successful breeding program. The main objective of the present study was to assess performance, useful heterosis and combining ability among ma...
Open access
Research Article10.9734/JABB/2016/27507
High plant density and full irrigation along with the use of high density-tolerant genotype would lead to maximizing maize (Zea mays L.) grain productivity per unit land area. The objective of this investigation was to match the functions of optimum plant density and adequate irr...
Open access
Research Article10.9734/JABB/2016/26881
The use of high plant density (PD) along with tolerant genotypes to high PD would overcome the negative impacts of competition stresses and lead to maximizing maize yield of grain (GYPH), protein (PYPH), oil (OYPH) and starch (SYPH) from the unit land area (ha). The main objectiv...
Open access
Research Article10.9734/ARJA/2016/26730
Aim: The objective of this investigation was to match the functions of optimum plant density to produce the highest possible grain yield per unit area with the greatest maize genotype efficiency. Study Design: A split plot design in randomized complete block arrangement was used...
Open access
Research Article10.9734/JALSI/2016/26811
The main objective of the present investigation was to identify the optimum plant density for the best performance of grain protein, oil and starch contents and yields of different maize genotypes via quadratic regression functions. Diallel crosses among diverse maize inbreds wer...
Open access
Research Article10.9734/JABB/2016/26692
Maize is considered susceptible to drought stress, when occurs at flowering stage. Thus, the development of drought tolerant maize cultivars is of important priority for plant breeders. The objectives of the present study were: (i) to assess the effect of maize genotype (G), irri...
Open access
Research Article10.9734/JAERI/2016/25438
The main objective of this investigation was to study the effects of deficit irrigation (I) at flowering stage, genotype (G) and G × I interaction on maize grain quality and yield traits of 6 inbred lines and their 15 diallel crosses. The parents and F1's were evaluated in two se...
Open access
Research Article10.9734/IJPSS/2016/23570
Genetic variability in salt tolerance of bread wheat could be induced via crossing diverse parents and producing doubled haploid (DH) lines from such crosses. One hundred seventeen DH lines resulted via anther culture technique from the cross between Sakha-8 (salt tolerant old va...
Open access
Research Article10.9734/IJPSS/2015/15119
The objective of the present investigation was to study the effect of salt affected soils in different locations in Egypt on performance, variability, correlations, heritability, and genetic advance from selection of 117 bread wheat doubled haploids and 4 checks. The experiments...
Open access
Research Article10.9734/IJPSS/2015/18900
Although screening large numbers of wheat genotypes for salinity tolerance under controlled elevated salinity levels in the greenhouse is useful, the final screening in the field at different locations, where soils are naturally affected with salt and other uncontrolled factors i...
Open access
Research Article10.9734/JAERI/2015/18920
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
In an attempt to develop drought tolerant genotypes of bread wheat, two procedures, i.e., mutation and hybridization were used to induce new genetic variation. Selection for high grain yield/plant (GYPP) and other desirable traits was practiced in the M2 populations of 7 gamma ir...
Open access
Research Article10.9734/BBJ/2015/15898
Selection from established high yielding pure line wheat cultivars would rarely isolate a new genotype. Inducing new genetic variation in bread wheat populations via gamma ray irradiation and hybridization procedures and isolating drought tolerant genotypes from derived heterogen...
Open access
Research Article10.9734/IJPSS/2015/15018