Genetic Assessment of Combining Ability for Seed-Yield and Its Related Traits in Soybean [Glycine max (L.) Merrill]

2020 ◽  
Author(s):  
Gbemisola Oluwayemisi Ige ◽  
Godfree Chigeza ◽  
Subhash Chander ◽  
Abebe Tesfaye Abush ◽  
David Kolawole Ojo ◽  
...  
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Agronomic Traits ◽  
Block Design ◽  
Days To Flowering ◽  
Randomized Complete Block Design ◽  
Glycine Max L ◽  
Improvement Programme ◽  
Genetic Assessment ◽  
Made In

Crosses were made in line × tester mating design between a set of five IITA soybean released varieties and three plant introduced (PI) accessions obtained from World Vegetable Center, Taiwan. In order to produce sufficient seeds, F1 crosses were selfed, subsequently F2 populations along with their parents were planted in a randomized complete block design at two locations in Nigeria with three replications. Agronomic traits viz. days to flowering, days to poding, plant height, number of pods/plant and seed yield/plant were measured. Testers and lines showed significant differences for all the measured traits except days to flowering for testers. Considering the significance and magnitude of general combining ability (GCA) effect, line TGx 1988-5F was observed desirable for earliness, while line TGx 1989-19F was the best combiner for number of pods/plant and seed yield/plant. On the other hand, best tester for seed yield was PI 230970. Crosses TGx 1835-10E × PI 459025B and TGx 1987-62F × PI 459025B had significant and highest SCA effect for seed yield/plant. These two crosses appeared to be most promising for soybean yield improvement programme.

scholarly journals Relationship between grain yield and blossoming in upland rice lines

2020 ◽  
Vol 1 (1) ◽  
pp. 98
Author(s):  
Monique Carolina Nunes Fernandes ◽  
Douglas Goulart Castro ◽  
Flávia Barbosa Silva Botelho ◽  
Amanda Mendes de Moura ◽  
Laís Moretti Tomé ◽  
...  
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Upland Rice ◽  
Block Design ◽  
Phenotypic Correlation ◽  
Days To Flowering ◽  
Randomized Complete Block Design ◽  
Simultaneous Selection ◽  
Genotype Correlation ◽  
Low Magnitude

For upland rice, it is desired, among many objectives, to obtain highly productive and early genotypes, consequently reducing the risk of establishing a crop regarding climatic adversities. Therefore, this study aimed to verify the correlation between the agronomic traits days to flowering and grain yield of 14 upland rice lines. The experiment was conducted in seven environments, in the 2013/14, 2014/15 and 2015/16 crop years, in a randomized complete block design with three replications. Both the genotypic and phenotypic correlation were significant and positive, whereas the genotype correlation was superior to the phenotype. However, it was noted a low magnitude of the correlation values. It was concluded that a favorable and simultaneous selection is possible for high grain yield and plants with early blossoming cycle in upland rice.

scholarly journals Integrated Nutrient Management on Soybean in a Coastal Charland of Bangladesh

2017 ◽  
Vol 20 (1) ◽  
pp. 77-83
Author(s):  
ISM Farhad ◽  
MA Rahman ◽  
E Jahan ◽  
MG Azam ◽  
NR Khan
Keyword(s):  
Seed Yield ◽  
Nutrient Management ◽  
Block Design ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Integrated Nutrient Management ◽  
Gross Margin ◽  
Plant Seeds ◽  
Randomized Complete Block Design ◽  
Glycine Max L

A field experiment was conducted at Char Jangalia under MLT site, Laxmipur, a coastal district of southern Bangladesh, during Rabi season of 2015-16 to evaluate the effect of integrated nutrient management on growth and yield performance of soybean (var. Glycine max L.). Six treatment combinations, viz. T1= Control, T2= Farmers practice (25-15 Kg NP ha-1, T3= 100% recommended dose (30-25-55 Kg NP ha-1, K), T4= 50 % recommended dose + 1.5 t ha-1 vermi compost, T5= 50 % recommended dose + 5 t ha-1compost and T6=50 % recommended dose + 1.2 kg ha-1 bio fertilizer were tested. The experiment was laid out in randomized complete block design with 3 replications. There were significant differences among the different treatment combinations in terms of yield and yield contributing characters. Integrated nutrient management with application of 50% of the recommended doses of urea, TSP, MoP, and biofertilizer (Bradyrhizobium) at the rate of 1.2 kg ha-1 significantly increased most of the parameters, such as the plant height, number of nodule per plant, pods per plant, seeds per pod and seed yield. The highest seed yield (2.93 t ha-1) was recorded from T6 while the lowest seed yield (1.83 t ha-1) was obtained from T1. The highest gross return (Tk.117200 ha-1) and gross margin (Tk. 71840 ha-1) was obtained from T6, whereas the lowest gross return (Tk. 70400 ha-1) and gross margin (Tk.27880 ha-1) was obtained from T1. The overall results indicated that the application of integrated nutrient management of a combination of bio fertilizer with 50% N-P-K (15- 12.5-27.5 Kg ha-1) of the recommended dose produced the maximum nodulation and seed yield of soybean in the southern coastal char land.Bangladesh Agron. J. 2017, 20(1): 77-83

scholarly journals Heterodera glycine race 2 and the yield of common bean in Puerto Rico.

1969 ◽  
Vol 86 (3-4) ◽  
pp. 117-122
Author(s):  
James R. Smith
Keyword(s):  
Puerto Rico ◽  
Common Bean ◽  
Seed Yield ◽  
Yield Components ◽  
Block Design ◽  
Randomized Complete Block Design ◽  
Glycine Max L ◽  
Race 2 ◽  
Pod Number

Heterodera glycines, a destructive pathogen of soybean (Glycine max L. Merc), was recently discovered in Puerto Rico. Common bean (Phaseolus vulgaris L.) can also be a host for H. glycines, but there are no reports of the effect of H. glycines on seed yield of bean. The objective of this study was to determine the effect of the Puerto Rico race-2 population of H. glycines on yield components of common bean. Three resistant and three non-resistant bean lines were exposed to three infestation densities (0, 4,000, and 8,000 eggs and juveniles per pot) of H. glycines race 2, A factorial arrangement of lines and infestation densities was used in a randomized complete block design with six replications in a greenhouse in Isabela, Puerto Rico, in 2000. Data for seed number, pod number, and seed yield per plant were collected. H. glycines had no effect on any yietd component. Observed differences in yield components were due to genotypic factors unrelated to H. glycines. Initial conclusions indicate that H. glycines will not affect yield of common bean in Puerto Rico. Follow-up studies of common bean and H. glycines, using course-textured sous, are recommended.

scholarly journals Genetic Analysis of Various Traits in Oilseed Brassicas

2021 ◽  
Author(s):  
Hafiz Basheer Ahmad ◽  
Salsabeel Rauf ◽  
Waqas Shafqat Chattha ◽  
Abdul Khaliq ◽  
Amir Amin ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Interspecific Hybridization ◽  
Seed Yield ◽  
Combining Ability ◽  
Block Design ◽  
Brassica Species ◽  
Interspecific Crosses ◽  
Novel Traits ◽  
Randomized Complete Block Design ◽  
Oilseed Brassicas

Background: The combining ability and manifestation of heterosis within and among the species of oilseed brassicas (B. campestris, B. napus and B. juncea) were studied for yield and yield related traits in 12F1 combinations. Methods: All crosses (12F1) along with their parents (7 parents) were sown in randomized complete block design (RCBD) with three replications. Result: The analysis of variance showed extensive variability among the genotypes. The physical appearance of interspecific crosses was intermediate. B. campestris showed significant GCA effects among lines and B. juncea among testers for seed yield per plant. General combining behaviour of B. campestris was better as compared to B. napus and B. juncea. The SCA effects were higher within species than among the species. This also revealed that within the species B. juncea had more SCA (17.45) than B. napus (9.82) and B. campestris (8.01) for seed yield. The SCA showed the improvement of B. Juncea, is the best than other two species. It is also concluded that to obtain better yield, crossing within the species is more appropriate than among the species. Moreover, to introduce novel traits in brassica species is possible through interspecific hybridization.

scholarly journals Determinación de un patrón heterótico a partir de la evaluación de un dialelo de diez líneas de maíz subtropical.

2016 ◽  
Vol 8 (1) ◽  
pp. 01 ◽  
Author(s):  
Santos González ◽  
Hugo Córdova ◽  
Segio Rodríguez ◽  
Humberto De León ◽  
Víctor M. Serrato
Keyword(s):  
Experimental Design ◽  
Seed Yield ◽  
Combining Ability ◽  
Design Method ◽  
Block Design ◽  
Heterotic Groups ◽  
Combined Analysis ◽  
Randomized Complete Block Design ◽  
Group B ◽  
B Lines

In this research 45 single crosses from a diallel of ten subtropical maize lines from CIMMYT and three checks were evaluated in five sites. The experimental design utilized was an Alfa lattice with two replications per location. Combined analysis across locations were made with a randomized complete block design. Method IV of Griffing’s was used to calculate estimates of general (GCA) and specific combining ability (SCA). The best crosses were 5x10, 5x8, 5x6, 4x10 and 5x7 with a yield of 11 t/ha aprox. The best cross was 5 x 10 which was 21% superior in seed yield and with better agronomic characteristics than the check CML78 x CML97. The line S89500F2-2-2-2-2-B-B showed the highest GCA effect. Two subtropical heterotic groups were formed with the following lines: “A”, lines one, four, five, and six; group “B” , lines two, three, seven, eight, nine, and ten. Line five can be used as a tester “A” and the line ten can be used as a tester “B”. The hybrids and lines selected could be used in subtropical environments.

scholarly journals Combining Ability of Selected Soybean [Glycine max (L.) Merrill] Parental Lines

2021 ◽  
Author(s):  
Gbemisola O. Otusanya ◽  
G. Chigeza ◽  
S. Chander ◽  
A.T. Abebe ◽  
O.O. Sobowale ◽  
...  
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Block Design ◽  
Soybean Genotypes ◽  
Glycine Max L ◽  
Parental Lines ◽  
F2 Generation ◽  
Result Analysis ◽  
Hybridization Programme ◽  
Partial Diallel

Background: The success of hybridization programme depends on the combining ability of parental lines. Methods: Seven soybean genotypes and all their partial diallel crosses in the F2 generation were evaluated in a randomized complete block design at two locations in Nigeria, during the 2017-2018 growing season. Result: Analysis of variance showed that both environments and genotypes were significantly different for all measured traits. The genotype TGx 1988-5F was the best general combiner for earliness in flowering and poding, while TGx 1448-2E was the best general combiner for number of pods/plant and seed yield/plant. Crosses having significant and positive specific combining ability effect for number of pods/plant and seed yield/plant were TGx 1485-1D × TGx 1448-2E and TGx 1988-5F × TGx 1989-19F, respectively. Genotypes TGx 1988-5F and TGx 1448-2E exhibiting good general combining ability for earliness and seed yield/plant, are thus, promising for utilization in the future hybridization programme for soybean improvement.

scholarly journals Selection of rapeseed mutants for higher yield and yield contributing traits

2017 ◽  
Vol 14 (2) ◽  
pp. 141-146
Author(s):  
MA Malek ◽  
MY Rafii ◽  
MK Khatun
Keyword(s):  
Seed Yield ◽  
Gamma Rays ◽  
Agronomic Traits ◽  
Block Design ◽  
Yield Attributes ◽  
Period Analysis ◽  
Randomized Complete Block Design ◽  
Maturity Period ◽  
Selection Of ◽  
Number Of Branches

Seven mutants along with the mother variety were evaluated following randomized complete block design with four replicates at four rapeseed growing areas of Bangladesh during 2013-2014 to observe their performances regarding seed yield and yield attributes, and to select promising mutants having higher seed yield with short maturity period. Analysis of variance showed highly significant variations among the mutants and the check for most of the characters studied in individual location and combined over locations. The mutant RM-01-07 required the shortest maturity period except Rangpur and the mother variety Binasarisha-4 required the longest. At Mymensingh and Rangpur, mutant RM-02-07 produced the tallest plant. Both at Mymensingh and Magura, RM-01-07 produced the highest number of siliquae plant-1 and the mother variety produced the lowest siliquae plant-1. At Ishurdi, RM-10-07 produced the highest number siliquae followed by RM-03-07. Combined means over locations showed that the six mutants matured earlier except the mutant RM-03-07 and most of the mutants produced higher number of branches plant-1 compared to the mother variety. Results over different locations also showed that the three mutants RM-01-07, RM- 10-07 and RM-04-07 produced significantly higher seed yield (1912, 1846 and 1862 kg/ha, respectively) which was 15.1, 12.1 and 11.1% higher than the mother variety, Binasarisha-4 with seed yield of 1661 kg/ha. These three mutants had also the higher number of siliquae than the mother variety. This suggests that gamma rays irradiation can be fruitfully applied to develop mutants with higher seed yield and other improved agronomic traits in oleiferous Brassica.J. Bangladesh Agril. Univ. 14(2): 141-146, December 2016

scholarly journals Nuevos híbridos de maíz (Zea mays L.) para el bajio y trópico seco mexicano: líneas recobradas por selección gamética.

2016 ◽  
Vol 7 (1) ◽  
pp. 53
Author(s):  
Cristina Vega ◽  
Gustavo Burciaga ◽  
Jesús Arreola ◽  
Enrique Navarro ◽  
José L. Gutiérrez
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Agronomic Traits ◽  
Block Design ◽  
Randomized Complete Block Design ◽  
Agronomic Quality ◽  
Gamete Selection

The aim of this study was to improve the agronomic quality of the tropical lines AN1 and AN2 which have good combining ability; besides their germoplasm is part of a large number of commercial hybrids generated by the Instituto Mexicano del Maíz “Dr. Mario E. Castro Gil”. Eto Blancoand Blanco Dentado 2 were used as a source of gametes and crossed with AN1 and AN2, respectively. This study included recovered lines with different level of inbreeding, five dwarf single crosses and the original lines AN1 and AN2 which were used as testers. A randomized complete block design was used with two replications in each of the three locations during 1989-1990. The objectives were: 1. to select recovered lines on the bases of their combining ability and agronomic traits to generate new hybrids. 2. To determine the effectiveness of the diverse testers. The results showed that gamete selection was efficient in improving AN1 and AN2 lines for most of the traits evaluated such as grain yield, percent of fussarium on ears, except for percent of husk coverage. That recovered lines of AN1 were superior to those of AN2 lines for grain yield. A total of fifteen lines of AN1 and 7 lines of AN2 were identified using gamete selection.

Combining ability and heterosis studies across environments in linseed (Linum usitatissimum L.)

2011 ◽  
Vol 59 (1) ◽  
pp. 87-102 ◽  
Author(s):  
S. Sood ◽  
N. Kalia ◽  
S. Bhateria
Keyword(s):  
Seed Yield ◽  
Linum Usitatissimum ◽  
Combining Ability ◽  
Yield Components ◽  
Block Design ◽  
Linum Usitatissimum L ◽  
Randomized Block Design ◽  
Component Traits ◽  
Parental Lines ◽  
Fibre Yield

Combining ability and heterosis were calculated for fourteen lines of linseed in a line × tester mating design using twelve lines and two diverse testers in two different environments. The hybrids and parental lines were raised in a completely randomized block design with three replications to investigate seed and fibre yield and their component traits. Genetic variation was significant for most of the traits over environments. Combining ability studies revealed that the lines KL-221 and LCK-9826 were good general combiners for seed yield and most of its components, whereas LMH-62 and LC-2323 were good general combiners for yield components only. Moreover, KL-221 was also a good general combiner for fibre yield. Similarly, B-509 and Ariane were good general combiners for fibre yield and most of its components. Among the specific cross combinations, B-509 × Flak-1 was outstanding for seed yield per plant and B-509 × KL-187 and LC-2323 × LCK-9826 for fibre yield per plant, with high SCA effects. In general, the hybrids excelled their respective parents and the standard checks for most of the characters studied. Based on the comparison of mean performance, SCA effects and the extent of heterosis, the hybrids LC-2323 × LCK-9826 and B-509 × KL-221 appeared to be the most promising for both seed and fibre yield. Other promising combinations were LC-2323 × KL-210 and B-509 × Ariane for seed and fibre yield, respectively. The superiority of LC-2323, LCK-9826, KL-221, B-509 and Ariane as good general combiners was further confirmed by the involvement of these parents in the desirable cross combinations.

Canola seed yield and phenological responses to plant density

2016 ◽  
Vol 96 (1) ◽  
pp. 151-159 ◽  
Author(s):  
Gan Yantai ◽  
K. Neil Harker ◽  
H. Randy Kutcher ◽  
Robert H. Gulden ◽  
Byron Irvine ◽  
...  
Keyword(s):  
Seed Yield ◽  
Plant Density ◽  
Block Design ◽  
Positive Association ◽  
High Yield ◽  
Western Canada ◽  
Flowering Period ◽  
Canola Seed ◽  
Randomized Complete Block Design ◽  
Plant Densities

Optimal plant density is required to improve plant phenological traits and maximize seed yield in field crops. In this study, we determined the effect of plant density on duration of flowering, post-flowering phase, and seed yield of canola in diverse environments. The field study was conducted at 16 site-years across the major canola growing area of western Canada from 2010 to 2012. The cultivar InVigor® 5440, a glufosinate-resistant hybrid, was grown at five plant densities (20, 40, 60, 80, and 100 plants m−2) in a randomized complete block design with four replicates. Canola seed yield had a linear relationship with plant density at 8 of the 16 site-years, a quadratic relationship at 4 site-years, and there was no correlation between the two variables in the remaining 4 site-years. At site-years with low to medium productivity, canola seed yield increased by 10.2 to 14.7 kg ha−1 for every additional plant per square metre. Averaged across the 16 diverse environments, canola plants spent an average of 22% of their life cycle flowering and another 27% of the time filling seed post-flowering. Canola seed yield had a negative association with duration of flowering and a positive association with the days post-flowering but was not associated with number of days to maturity. The post-flowering period was 12.7, 14.7, and 12.6 d (or 55, 68, and 58%) longer in high-yield experiments than in low-yield experiments in 2010, 2011, and 2012, respectively. We conclude that optimization of plant density for canola seed yield varies with environment and that a longer post-flowering period is critical for increasing canola yield in western Canada.

Sign in / Sign up

Export Citation Format

Share Document