scholarly journals Cupuaçu tree genotype selection for an agroforestry system environment in the Amazon

2021 ◽  
Vol 56 ◽  
Author(s):  
Rafael Moysés Alves ◽  
Saulo Fabrício da Silva Chaves ◽  
Rodrigo Silva Alves ◽  
Thalita Gomes dos Santos ◽  
Dênmora Gomes de Araújo ◽  
...  
Keyword(s):  
Mixed Model ◽  
Agronomic Traits ◽  
Block Design ◽  
Black Pepper ◽  
Agroforestry System ◽  
Piper Nigrum ◽  
Randomized Complete Block Design ◽  
Agronomic Potential ◽  
Broom Disease ◽  
Selection Of

Abstract: The objective of this work was to select cupuaçu (Theobroma grandiflorum) tree progenies and individuals based on their agronomic traits, and, indirectly, to identify those adapted to an agroforestry system (AFS) environment in the Brazilian Amazon. For this purpose, 25 full-sib progenies were planted and tested in consortium with black pepper (Piper nigrum), banana (Musa spp.), and bacuri (Platonia insignis) trees. The experiment was carried out in a randomized complete block design, with five replicates and three plants per plot, from 2005 to 2019. For the statistical analyses, the phenotypic averages for production and incidence of witches’ broom disease, evaluated during 11 harvests, were used. Superior progenies and individuals were identified using the mixed model methodology (REML/BLUP), which led to the selection of ten plants from five families with superior agronomic traits. Cupuaçu tree progenies 6, 36, 37, 49, and 52 are the ones that best adapt to the environment of a multispecies AFS in the Amazon region because of their agronomic traits under competitive conditions. Ten matrices show agronomic potential and indirect adaptation to the AFS and can be used as clonal cupuaçu cultivars in this environment.

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 SELECTION OF COFFEE PROGÊNIES FOR RESISTANCE TO LEAF RUST AND FAVORABLE AGRONOMIC TRAITS

2019 ◽  
Vol 14 (2) ◽  
pp. 173
Author(s):  
Rafael Almeida Dias ◽  
Marcelo Resende Ribeiro ◽  
Alex Mendonça Carvalho ◽  
Cesar Elias Botelho ◽  
Antonio Guimarães Mendes ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Block Design ◽  
Fruit Production ◽  
Direct Selection ◽  
Coffee Rust ◽  
Selection Gain ◽  
Randomized Complete Block Design ◽  
Selection For ◽  
Productivity Assessment ◽  
Selection Of

The objective of this study was to select coffee progenies with better assessment that can result in coffee rust resistant cultivars and better agronomic characteristics than the traditional ones. The essay was performed at the EPAMIG experimental field in Patrocínio, state of Minas Gerais, Brazil. Twenty-five progenies in the F3 generation were studied.  The experiment was set in a randomized complete block design with three replicates and ten plants per plot, arranged in rows at 3.5x0.7m. Productivity assessment, fruit production, in liters of “farm coffee” per plot, bean rating in a sieve (16 or above), and plant vigor were accessed in three different harvest seasons (2011/2012 harvest to 2014/2015 harvest), and coffee rust incidence and severity were then evaluated for 2016. The production profit estimation through the selection was also assessed, by the gain of direct selection for each characteristic, when compared to the rank addition. Progenies 13 (Icatu V. IAC 4040 x IAC 5002) and 3 (Icatu A. IAC 2944 x IAC 5002) were promising in generation advance, for being among the five most productive progenies. The selection gain reached by direct selection was superior than the gain of the total rank additions.

scholarly journals Tolerance to preharvest sprouting and yield of wheat genotypes from different breeding programs

2015 ◽  
Vol 50 (8) ◽  
pp. 698-706
Author(s):  
Rafael Nörnberg ◽  
José Antonio Gonzalez da Silva ◽  
Henrique de Souza Luche ◽  
Elisane Weber Tessmann ◽  
Sydney Antonio Frehner Kavalco ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Preharvest Sprouting ◽  
Rio Grande Do Sul ◽  
Falling Number ◽  
Breeding Programs ◽  
Wheat Genotypes ◽  
Randomized Complete Block Design ◽  
Superior Genotypes ◽  
Selection Of

Abstract:The objective of this work was to characterize the performance of elite wheat genotypes from different Brazilian breeding programs for traits associated with grain yield and preharvest sprouting. The study was conducted in 2010 and 2011 in the municipality of Capão do Leão, in the state of Rio Grande do Sul, Brazil, in a randomized complete block design with three replicates. Thirty-three wheat genotypes were evaluated for traits related to preharvest sprouting and grain yield. The estimate of genetic distance was used to predict potential combinations for selection of plants with high grain yield and tolerance to preharvest sprouting. The combined analysis of sprouted grains and falling number shows that the TBIO Alvorada, TBIO Mestre, Frontana, Fundacep Raízes, Fundacep Cristalino, and BRS Guamirim genotypes are tolerant to preharvest sprouting. Combinations of TBIO Alvorada and TBIO Mestre with Fundacep Cristalino show high potential for recovering superior genotypes for high grain yield and tolerance to preharvest sprouting.

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 Biomass and Sugar Content of Some Varieties of Sorghum (Sorghum Bicolor L. Moench) on Dry Land Forest as Feedstock Bioethanol

2018 ◽  
Vol 164 ◽  
pp. 01035 ◽  
Author(s):  
Praptiningsih Gamawati Adinurani ◽  
Sri Rahayu ◽  
Luluk Sulistiyo Budi ◽  
Anggi Nindita ◽  
Peeyush Soni ◽  
...  
Keyword(s):  
Biomass Production ◽  
Block Design ◽  
Sugar Content ◽  
Sustainable Use ◽  
Dry Weight ◽  
Raw Material ◽  
Dry Land ◽  
Randomized Complete Block Design ◽  
High Sugar Content ◽  
Selection Of

The possibility of sustainable use of sorghum as raw material for bioethanol needs to be supported by evaluation and selection of sorghum varieties for high biomass production and sugar content. An experiment was conducted on forest dry land , altitude 63 m asl. This research aimed to determine the interaction of sorghum varieties and mycorrhiza on biomass production and the high sugar content. The experiment was a two factor (varieties and dosage of mycorrhiza plus) in a randomized complete block design with three replications. The varieties were Suri 3, Kawali, Super 2, Suri 4. Dosage of mycorrhiza plus (5, 10, 15) g per plant. The interaction only significant on a number of internodes and bagasse. There are no effects of dosages mycorrhiza plus, however, varieties of sorghum have significant effects on many variables measured. The highest amount of biomass include the stem height (301.28 cm), stem Dry Weight (DW) is 23.48 t ha-1, leaf DW (4.65 t ha-1), panicle DW (11.35 t ha-1) and biomass DW (39.98 t ha-1) were obtained in varieties Super 2. Sugar content (16.93 %) was obtained in varieties Suri 3 and juice production (2 742.86 L ha-1) in varieties Suri 4.

scholarly journals Agronomic potential of BC1F2 dwarf round tomato populations

2020 ◽  
Vol 44 ◽  
Author(s):  
Rafael Resende Finzi ◽  
Gabriel Mascarenhas Maciel ◽  
Hugo Gabriel Peres ◽  
Marina Freitas e Silva ◽  
Joicy Vitória Miranda Peixoto ◽  
...  
Keyword(s):  
Block Design ◽  
Selection Index ◽  
Genetic Material ◽  
Fruit Shape ◽  
Economic Benefits ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Transverse Diameter ◽  
Agronomic Potential ◽  
Selection Of

ABSTRACT The use of dwarf lines to obtain mini-tomato hybrids has provided agronomic and economic benefits. In Brazil, round tomatoes predominate over other varieties. The benefits of using a dwarf parent in round tomato hybrids has yet to be explored, making it important to develop dwarf round tomato lines. Backcrossing is the most suitable method to develop these lines. Evaluation and selection of the dwarf populations can improve the development of such lines. Thus, the aim of this study was to select BC1F2 populations of dwarf round tomatoes with agronomic potential and high-quality fruit. The study was conducted at the Vegetable Experimental Station of the Federal University of Uberlândia (UFU). A randomized block design was used, with 15 treatments and three replicates. The genetic material analyzed consisted of 12 BC1F2 dwarf tomato populations, plus both parents (recurrent and donor) and a commercial hybrid. The characteristics assessed were: average fruit weight (g), total soluble solids (ºBrix), number of locules (locules per fruit-1), fruit shape, pulp thickness (cm), longitudinal (cm) and transverse fruit diameter (cm), internode length (cm) and plant height (cm). The data were submitted to mean testing, multivariate analyses and a selection index. In general, average fruit weight in the dwarf populations increased significantly after the first backcross, with some fruits exhibiting a similar shape to round tomatoes. Selection of the populations UFU-DTOM7, UFU-DTOM10, UFU-DTOM5, UFU-DTOM9, and UFU-DTOM3 resulted in an estimated 6% increase in the number of locules, transverse diameter, TD/LD ratio and average fruit weight. The BC1F2 dwarf populations UFU-DTOM7 and UFU-DTOM10 were the most promising for develop inbred lines with round fruits. Despite the considerable progress achieved in this study, we suggest a second backcross, in order to obtain lines and, posteriorly, hybrids with round fruits and compact plants.

scholarly journals Assessment of Juvenile Growth and Yield Relationship Among Dwarf Cashew Types in Ghana

2020 ◽  
Vol 12 (10) ◽  
pp. 116
Author(s):  
A. M. Dadzie ◽  
P. K. K. Adu-Gyamfi ◽  
A. Akpertey ◽  
A. Ofori ◽  
S. Y. Opoku ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Environmental Influence ◽  
Block Design ◽  
Growth And Yield ◽  
Agronomic Performance ◽  
Juvenile Growth ◽  
Genetic Advance ◽  
Randomized Complete Block Design ◽  
High Heritability ◽  
The Relationship

Cashew (Anacardium occidentale L.) is an important tropical cash crop cultivated in Ghana. It provides livelihood for about 200,000 people and contributes 6.1% to Ghana’s gross domestic product (GDP). Four Brazilian dwarf accessions were introduced to improve nut yield. Objectives of this study were to (1) assess the agronomic performance of the accessions across two contrasting ecologies, (2) determine environmental influence on juvenile growth, (3) determine the relationship between early vegetative growth and yield and (4) explore heritability and genetic advance for the measured agronomic traits. The experiment was laid out in a randomized complete block design with 3 replications. Results revealed significant (p < 0.05) environmental influence on growth and yield of cashew. Transitional savanna agro-ecology is more suitable for cashew growth and development. Crop year, location and crop year × location interactions also influenced most of the agronomic traits. Early growth characteristics alone were not enough to predict yield. Genotype B2 ranked highest yielding across the agro-ecologies. Moderate to high heritability and genetic advance estimates were observed for nut yield, plant height and girth, an indication of variability among accessions needed for cashew improvement in Ghana.

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 Varietal Evaluation and Clustering of Early Maize Genotypes in Mid-Western Hilly Region of Nepal

2020 ◽  
Vol 77 (2) ◽  
pp. 24
Author(s):  
Bishnu Prasad KANDEL
Keyword(s):  
Genetic Diversity ◽  
Block Design ◽  
Yield Component ◽  
Research Station ◽  
Maize Genotypes ◽  
Hilly Region ◽  
Randomized Complete Block Design ◽  
Component Traits ◽  
Yield Component Traits ◽  
Selection Of

Eleven early maize (Zea mays) genotypes were evaluated for their yield and yield component traits at the research block of Regional Agriculture Research Station (RARS) Lumle, Kaski, Nepal during Kharif season of 2016. The experiment was laid out in randomized complete block design (RCBD) with three replications. Results showed that all the studied genotypes differed significantly for grain yield as well as other yield component traits except number of kernel per row. Out of tested genotypes COMPOZ-NIPB, EEYC1, POP-445/POP-446 were three top performer genotypes yielding 6.89, 5.38 and 5.19 t ha-1. Early mid Katamari, Rajahar local, Manakamana-5, EEYC1 were statistically at par with Arun-4(standard check) and will be needed further evaluation and improvement by a selection of desirable traits. Eleven genotypes occupied three different clusters and showed that early maize genotypes suggest considerable genetic diversity among themselves. Genotypes belong to cluster one having the highest yield potentials so need to be further evaluation in different location of mid hill and recommended best variety for that domain.

scholarly journals Varietas Non Hibrida Cabai Besar Anies IPB

2017 ◽  
Vol 1 (1) ◽  
pp. 56
Author(s):  
Muhamad Syukur ◽  
Sobir , ◽  
Siti Marwiyah ◽  
Awang Maharijaya ◽  
Anas D. Susila ◽  
...  
Keyword(s):  
Dynamic Stability ◽  
Block Design ◽  
Female Parent ◽  
West Java ◽  
Harvesting Time ◽  
Central Java ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
High Level ◽  
Selection Of

The pepper is very important horticultural commodities. The purpose of this research was to study the advantagesof Anies IPB varieties and develop the description. Anies IPB was the result of the selection of segregating populations from the crosses of IPB C120 (as the female parent) and IPB C5 (as the male parent). The experiments were performed in four locations namely Boyolali (Central Java), Sumedang (West Java), and Bogor (West Java). The experimental used the randomized complete block design (RCBD) two factors with three replications. The replications nested within the locations. The first factor was 9 lines and 2 open pollinated varieties, and the second factor was the three locations. Each lines on each replicate in each location were planted 24 plants. The results showed that the superiority of Anies IPB varieties were (1) The productivity of Anies IPB was higher than the check varieties. Productivity can reach 18.6 tons ha-1. (2) Anies IPB has fruit that was longer than the Tit Super and Trisula. (3) Anies IPB has early-harvesting time, ranged between 76.67 - 84.67 days after planting. (4) Anies IPB has a high level of stability and classified into the dynamic stability, which means that veryadaptive to the optimum environment.Keyword: non hybrid, pepper productivity superiority, variety

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